BIT Mining Limited (BTCM) 20-F 22 Apr 19 2018 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2018shares
Document and Entity Information [Abstract]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	500.com Ltd
Entity Central Index Key	0001517496
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Trading Symbol	WBAI
Entity Shell Company	false
Entity Emerging Growth Company	false
Common Class A [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding	350,804,532
Common Class B [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding	74,400,299

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Current assets:
Cash and cash equivalents	¥ 435,133	$ 63,287	¥ 487,266
Restricted cash	1,254	182	1,238
Short-term investments	100,000	14,544	100,000
Prepayments and other receivables	65,198	9,483	81,316
Current assets for discontinued operations	0	0	67,202
Total current assets	601,585	87,496	737,022
Non-current assets:
Property and equipment, net	97,195	14,136	105,502
Intangible assets, net	214,962	31,265	243,261
Goodwill	129,752	18,872	129,752
Deposits	5,152	749	5,750
Long-term investments	194,375	28,271	347,073
Other non-current assets	3,563	518	6,257
Non-current assets for discontinued operations	0	0	179,942
Total non-current assets	644,999	93,811	1,017,537
TOTAL ASSETS	1,246,584	181,307	1,754,559
Current liabilities:
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB9,875 and RMB7,854 (US$1,142) as of December 31, 2017 and 2018, respectively)	9,779	1,422	11,855
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB51,658 and RMB54,200 (US$7,883) as of December 31, 2017 and 2018, respectively)	88,149	12,820	146,233
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB615 and RMB1,313 (US$191) as of December 31, 2017 and 2018, respectively)	1,766	257	2,223
Current liabilities for discontinued operations	0	0	15,626
Total current liabilities	99,694	14,499	175,937
Non-current liabilities:
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB27,673 and RMB 4,196 (US$610) as of December 31, 2017 and 2018, respectively)	4,196	610	27,785
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of nil and nil as of December 31, 2017 and 2018, respectively)	7,744	1,126	6,754
Non-Current liabilities for discontinued operations	0	0	12,721
Total non-current liabilities	11,940	1,736	47,260
TOTAL LIABILITIES	111,634	16,235	223,197
Commitments and contingencies
Redeemable noncontrolling interest	29,388	4,274	22,052
Shareholders' equity:
Additional paid-in capital	2,431,924	353,709	2,295,111
Treasury shares	(143,780)	(20,912)	(143,780)
Accumulated other comprehensive income	137,736	20,033	116,051
Accumulated deficit and statutory reserve	(1,309,424)	(190,448)	(857,751)
Total 500.com Limited shareholders' equity	1,116,605	162,404	1,409,774
Noncontrolling interests	(11,043)	(1,606)	99,536
Total shareholders' equity	1,105,562	160,798	1,509,310
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY	1,246,584	181,307	1,754,559
Common Class A [Member]
Shareholders' equity:
Ordinary shares, value	121	18	115
Common Class B [Member]
Shareholders' equity:
Ordinary shares, value	¥ 28	$ 4	¥ 28

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)shares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)shares
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB9,875 and RMB7,854 (US$1,142) as of December 31, 2017 and 2018, respectively)	¥ 9,779	$ 1,422	¥ 11,855
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB51,658 and RMB54,200 (US$7,883) as of December 31, 2017 and 2018, respectively)	88,149	12,820	146,233
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB615 and RMB1,313 (US$191) as of December 31, 2017 and 2018, respectively)	1,766	257	2,223
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB27,673 and RMB 4,196 (US$610) as of December 31, 2017 and 2018, respectively)	4,196	610	27,785
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of nil and nil as of December 31, 2017 and 2018, respectively)	¥ 7,744	$ 1,126	¥ 6,754
Ordinary shares, shares authorized	1,000,000,000	1,000,000,000
Class A Ordinary shares [Member]
Ordinary shares, par value | $ / shares		$ 0.00005
Ordinary shares, shares authorized	700,000,000	700,000,000	700,000,000
Ordinary shares, shares issued	350,804,532	350,804,532	333,787,552
Ordinary shares, shares outstanding	350,804,532	350,804,532	333,787,552
Class B Ordinary shares [Member]
Ordinary shares, par value | $ / shares		$ 0.00005
Ordinary shares, shares authorized	300,000,000	300,000,000	300,000,000
Ordinary shares, shares issued	74,400,299	74,400,299	74,400,299
Ordinary shares, shares outstanding	74,400,299	74,400,299	74,400,299
Variable Interest Entity, Primary Beneficiary [Member]
Accrued payroll and welfare payable (including accrued payroll and welfare payable of the consolidated VIEs without recourse to 500.com Limited of RMB9,875 and RMB7,854 (US$1,142) as of December 31, 2017 and 2018, respectively)	¥ 7,854	$ 1,142	¥ 9,875
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to 500.com Limited of RMB51,658 and RMB54,200 (US$7,883) as of December 31, 2017 and 2018, respectively)	54,200	7,883	51,658
Income tax payable (including income tax payable of the consolidated VIEs without recourse to 500.com Limited of RMB615 and RMB1,313 (US$191) as of December 31, 2017 and 2018, respectively)	1,313	191	615
Long-term payables (including long-term payables of the consolidated VIEs without recourse to 500.com Limited of RMB27,673 and RMB 4,196 (US$610) as of December 31, 2017 and 2018, respectively)	4,196	610	27,673
Deferred tax liabilities (including deferred tax liabilities of the consolidated VIEs without recourse to 500.com Limited of nil and nil as of December 31, 2017 and 2018, respectively)	¥ 0	$ 0	¥ 0

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)¥ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)¥ / sharesshares	Dec. 31, 2016CNY (¥)¥ / sharesshares
Net Revenues	¥ 126,089	$ 18,339	¥ 71,858	¥ 5,259
Operating costs and expenses:
Cost of services	(80,017)	(11,638)	(37,483)	(12,749)
Sales and marketing	(92,465)	(13,448)	(63,295)	(43,398)
General and administrative	(251,384)	(36,562)	(224,321)	(247,408)
Service development expenses	(61,909)	(9,004)	(58,592)	(70,741)
Total operating expenses	(485,775)	(70,652)	(383,691)	(374,296)
Other operating income	12,638	1,838	1,204	2,731
Government grant	7,620	1,108	6,789	10,017
Indemnity cost	0	0	0	(9,979)
Other operating expenses	(5,060)	(736)	(34,691)	(1,915)
Operating loss from continuing operations	(344,488)	(50,103)	(338,531)	(368,183)
Other income/(expenses), net	(43)	(6)	821	0
Interest income	15,308	2,226	20,032	23,859
Loss from equity method investments	(15,025)	(2,185)	(2,128)	(406)
Impairment of equity method investments	(149,896)	(21,801)	(28,781)	0
Gain from disposal of subsidiaries	2,805	408	5,477	136,914
Changes in fair value of contingent considerations	0	0	(2,384)	0
Loss before income taxes from continuing operations	(491,339)	(71,461)	(345,494)	(207,816)
Income taxes (expenses) benefits	19,602	2,851	14,025	(2,143)
Net loss from continuing operations	(471,737)	(68,610)	(331,469)	(209,959)
Income from discontinued operations, net of income taxes	2,183	316	15,327	707
Gain on disposal of discontinued operations, net of income taxes	10,160	1,478	0	0
Net income from discontinued operations, net of income taxes	12,343	1,794	15,327	707
Net loss	(459,394)	(66,816)	(316,142)	(209,252)
Net loss from continuing operations attributable to noncontrolling interest and redeemable noncontrolling interest	(8,820)	(1,283)	(6,734)	(6,633)
Net income from discontinued operations attributable to noncontrolling interest	1,099	161	7,691	346
Less: Net (loss) income attributable to the noncontrolling interest	(4,486)	(652)	1,524	(6,287)
Less: Net (loss) attributable to redeemable noncontrolling interest	(3,235)	(470)	(567)	0
Net loss attributable to 500.com Limited	(451,673)	(65,694)	(317,099)	(202,965)
Other comprehensive income (loss):
Foreign currency translation gain (loss)	23,023	3,349	(55,805)	82,347
Unrealized gain (loss) on available for sale investments	0	0	(733)	754
Other comprehensive income (loss), net of tax	23,023	3,349	(56,538)	83,101
Comprehensive loss	(436,371)	(63,467)	(372,680)	(126,151)
Less: Comprehensive (loss) income attributable to redeemable noncontrolling interest and noncontrolling interest	(6,383)	(928)	1,348	(6,287)
Comprehensive loss attributable to 500.com Limited	¥ (429,988)	$ (62,539)	¥ (374,028)	¥ (119,864)
Losses per share for Class A and Class B ordinary shares outstanding-Basic and Diluted:
Net loss from continuing operations | (per share)	¥ (1.13)	$ (0.164)	¥ (0.80)	¥ (0.49)
Net income from discontinued operations | (per share)	0.03	0.004	0.02	0.001
Net loss | (per share)	(1.10)	(0.16)	(0.78)	(0.489)
Losses per American Depositary Share ("ADS") (1 ADS represents 10 Class A ordinary shares)-Basic and Diluted
Net loss from continuing operations | (per share)	(11.28)	(1.64)	(7.95)	(4.90)
Net income from discontinued operations | (per share)	0.27	0.04	0.19	0.01
Net loss | (per share)	¥ (11.01)	$ (1.60)	¥ (7.76)	¥ (4.89)
Weighted average number of Class A and Class B ordinary shares outstanding:
Basic	418,911,292	418,911,292	408,310,122	414,872,756
Diluted	418,911,292	418,911,292	408,310,122	414,872,756

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Cash flow from operating activities
Net loss	¥ (459,394)	$ (66,816)	¥ (316,142)	¥ (209,252)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property and equipment	31,069	4,519	13,400	12,865
Amortization of intangible assets	32,910	4,787	26,102	6,846
Deferred tax (benefit) expense	(6)	(1)	405	(496)
Share-based compensation	108,628	15,799	91,143	163,341
Losses on disposal of property and equipment	0	0	171	15
Impairment loss on long-term investments	149,896	21,801	28,781	3,440
Provision for bad debt	0	0	1,500	200
Loss from equity method investments	15,025	2,185	2,128	406
Investment income from short-term investments	(6,118)	(890)	0	0
Reimbursement of American Depositary Receipt ("ADR") program related expenses	0	0	0	(1,390)
Gain on disposal of subsidiaries	(12,965)	(1,886)	(5,477)	(136,914)
Changes in operating assets and liabilities:
Account payable	0	0	0	18
Accounts receivable	0	0	0	(4,360)
Prepayments and other receivables	7,946	1,156	(32,208)	(4,347)
Deposits	612	89	46	(4,759)
Accrued expenses and other current liabilities	(1,395)	(203)	11,619	55,359
Accrued payroll and welfare payable	(1,800)	(262)	413	1,807
Long-term payables	(24,690)	(3,591)	(19,623)	(2,456)
Income tax payable	(224)	(33)	(2,133)	5,336
Net cash used in operating activities	(160,506)	(23,346)	(199,875)	(114,341)
Cash flows from investing activities
Acquisition of property and equipment	(35,623)	(5,181)	(72,892)	(26,888)
Acquisition of intangible assets	(1,053)	(153)	(2,142)	0
Disposal of subsidiaries and VIEs, net of cash disposed	23,683	3,445	71,820	224,392
Acquisition of other long-term investments	(11,059)	(1,608)	(302,317)	(28,385)
Cash paid for business combination, net of cash	0	0	(374,342)	(6,671)
Cash paid for short-term investments	0	0	(20,000)	(213,460)
Cash received from return of short-term investments	0	0	0	100,000
Cash distribution from short-term investments	6,118	890	0	0
Cash paid for time deposits	0	0	0	(938,928)
Cash received from return of time deposits	0	0	804,692	1,386,854
Cash received from return of other long-term investments	7,593	1,104	0	0
Proceeds from disposal of property and equipment	0	0	3,536	24
Proceeds from disposal of other long-term investments	5,843	850	0	0
Loans provided to third-parties	(10,009)	(1,456)	0	0
Repayment of loans provided to third-parties	5,021	730	0	0
Net cash provided by (used in) investing activities	(9,486)	(1,379)	108,355	496,938
Cash flows from financing activities
Proceeds from the exercise of share options	41,473	6,032	5,583	12,558
Repurchase of ordinary shares	0	0	(17,283)	(131,042)
Withdraw of prepayment for share repurchase	13,318	1,937	0	0
Reimbursement of ADR program related expenses	0	0	0	1,390
Net cash (used in) provided by financing activities	54,791	7,969	(11,700)	(117,094)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	21,226	3,087	(43,224)	47
Net increase (decrease) in cash, cash equivalents and restricted cash	(93,975)	(13,669)	(146,444)	265,550
Cash, cash equivalents and restricted cash at beginning of the year	530,362	77,138	676,806	411,256
Cash, cash equivalents and restricted cash at end of the year	436,387	63,469	530,362	676,806
Supplemental disclosures of cash flow information:
Income tax paid	0	0	(8,931)	(51)
Interest received	¥ 16,000	$ 2,327	¥ 19,416	¥ 18,977

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)	Ordinary shares [Member]CNY (¥)	Ordinary shares [Member]USD ($)	Additional paid-in capital [Member]CNY (¥)	Additional paid-in capital [Member]USD ($)	Treasury shares [Member]CNY (¥)	Treasury shares [Member]USD ($)	Accumulated other comprehensive income [Member]CNY (¥)	Accumulated other comprehensive income [Member]USD ($)	Accumulated deficit [Member]CNY (¥)	Accumulated deficit [Member]USD ($)	Noncontrolling interests [Member]CNY (¥)	Noncontrolling interests [Member]USD ($)	Class A Ordinary shares [Member]shares	Class B Ordinary shares [Member]shares
Balance at Dec. 31, 2015	¥ 1,866,336		¥ 142		¥ 2,022,369		¥ (8,773)		¥ 89,488		¥ (335,363)		¥ 98,473
Balance, shares at Dec. 31, 2015 | shares															334,034,932	84,999,159
Acquisition of shares of consolidated subsidiaries	98,887		0		0		0		0		0		98,887
Net (loss) income for the year	(209,252)		0		0		0		0		(202,965)		(6,287)
Foreign currency translation gain	82,347		0		0		0		82,347		0		0
Change in fair value of available for sale investments	754		0		0		0		754		0		0
Conversion of Class B to Class A ordinary shares	0		0		0		0		0		0		0
Conversion of Class B to Class A ordinary shares, shares | shares															10,598,860	(10,598,860)
Issuance of ordinary shares from exercise of share options	12,676		1		12,675		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares															2,276,320
Disposal of shares of consolidated subsidiaries	(92,561)		0		0		0		0		0		(92,561)
Repurchase of ordinary shares	(114,485)		0		0		(114,485)		0		0		0
Repurchase of ordinary shares, shares | shares															(11,415,320)
Share-based compensation	163,341		0		163,341		0		0		0		0
Balance at Dec. 31, 2016	1,808,043		143		2,198,385		(123,258)		172,589		(538,328)		98,512
Balance, shares at Dec. 31, 2016 | shares															335,494,792	74,400,299
Disposal of VIE	(2,824)		0		0		0		0		(2,324)		(500)
Net (loss) income for the year	(315,575)		0		0		0		0		(317,099)		1,524
Foreign currency translation gain	(55,805)		0		0		0		(55,805)		0		0
Change in fair value of available for sale investments	(733)		0		0		0		(733)		0		0
Issuance of ordinary shares from exercise of share options	5,583		0		5,583		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares															894,760
Repurchase of ordinary shares	(20,522)		0		0		(20,522)		0		0		0
Repurchase of ordinary shares, shares | shares															(2,602,000)
Share-based compensation	91,143		0		91,143		0		0		0		0
Balance at Dec. 31, 2017	1,509,310		143		2,295,111		(143,780)		116,051		(857,751)		99,536
Balance, shares at Dec. 31, 2017 | shares															333,787,552	74,400,299
Disposal of VIE	(107,419)		0		0		0		0		0		(107,419)
Adjustment to redemption value of redeemable noncontrolling interests	(10,559)		0		(10,559)		0		0		0		0
Net (loss) income for the year	(456,159)		0		0		0		0		(451,673)		(4,486)
Foreign currency translation gain	23,011		0		0		0		21,685		0		1,326
Change in fair value of available for sale investments	0	$ 0
Issuance of ordinary shares from exercise of share options	38,750		6		38,744		0		0		0		0
Issuance of ordinary shares from exercise of share options, shares | shares															17,016,980
Share-based compensation	108,628		0		108,628		0		0		0		0
Balance at Dec. 31, 2018	¥ 1,105,562	$ 160,798	¥ 149	$ 22	¥ 2,431,924	$ 353,709	¥ (143,780)	$ (20,912)	¥ 137,736	$ 20,033	¥ (1,309,424)	$ (190,448)	¥ (11,043)	$ (1,606)
Balance, shares at Dec. 31, 2018 | shares															350,804,532	74,400,299

ORGANIZATION

ORGANIZATION	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION	1. ORGANIZATION 500.com Limited (the “Company”) was incorporated under the laws of the Cayman Islands on April 20, 2007 under the original name of “Fine Success Limited”, which was changed to “500wan.com” on May 9, 2011 and further changed to the current name on October 9, 2013. As of December 31, 2018, the Company has subsidiaries incorporated in countries and jurisdictions including the People’s Republic of China (“PRC”), British Virgin Islands, Hong Kong, the United States of America (“USA”), United Kingdom of British (“UK”), Malta, Cyprus, Curacao, Australia and Japan and the Company also effectively controls a number of variable interest entities (“VIEs”), through the Primary Beneficiaries, as defined below. The accompanying consolidated financial statements include the financial statements of the Company, its subsidiaries, VIEs and VIEs’ subsidiaries. The Company does not conduct any substantive operations on its own but instead conducts its business operations through its wholly-owned and majority-owned subsidiaries and their respective VIEs or subsidiaries. As of December 31, 2018, the Company’s major subsidiaries, VIEs and VIEs’ subsidiaries are listed below: Entity Date of establishment Place of establishment Percentage of ownership by the Company Principal activities Subsidiaries Fine Brand Limited (“BVI”) February 9, 2011 British Virgin Islands 100 % Investment Holding 500wan HK Limited (“500wan HK”) March 8, 2011 Hong Kong 100 % Investment Holding 500.com Nihon Co., Ltd. (“500.com JP”) July 27, 2017 Japan 100 % Investment Holding 500.com USA Corporation (“500.com USA”) July 21, 2014 USA 100 % Investment Holding 500.com Gaming UK Limited (“500.com UK”) August 5, 2016 UK 100 % Investment Holding E-Sun Sky Computer (Shenzhen) Co., Ltd. (“E-Sun Sky Computer”) June 18, 2007 PRC 100 % Software Service Hainan Menghuanxingchen Computer Co., Ltd. (“Hainan Menghuanxingchen”) May 3, 2018 PRC 100 % Software Service The Multi Group Ltd (“The Multi Group”) June 26, 2015 Malta 93 % Investment Holding Multi Warehouse Ltd****** December 3, 2014 Malta 93 % Online Gaming Multi Brand Gaming Ltd****** October 3, 2014 Malta 93 % Online Gaming Multilotto UK Ltd****** September1, 2016 Malta 93 % Online Gaming Lotto Warehouse Ltd****** September1, 2016 Malta 93 % Online Gaming Wasp Media Ltd****** August 12, 2016 Malta 93 % Online Gaming Round Spot Services Ltd****** May 6, 2015 Cyprus 93 % Online Gaming Multi Pay N.V.****** August 25, 2011 Curacao 93 % Online Gaming Multilotto Australia PTY Ltd****** December13,2016 Australia 93 % Online Gaming Oddson Europe Ltd****** January10, 2018 Malta 93 % Online Gaming Entity Date of Place of Percentage of Company Principal activities VIEs Shenzhen E-Sun Network Co., Ltd. (“E-Sun Network”) December 7, 1999 PRC - Online Lottery Service Shenzhen Youlanguang Science and Technology Co., Ltd. (“ Youlanguang Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Guangtiandi Science and Technology Co., Ltd. (“ Guangtiandi Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Tongfu Technology Co., Ltd. (“ Tongfu Technology”) August 28, 2015 PRC - Third party payment service Subsidiaries of the VIEs Shenzhen E-Sun Sky Network Technology Co., Ltd. (“E-Sun Sky Network”) * May 22, 2006 PRC - Online Lottery Service Lhasa Yicai Network Technology Co., Ltd. (“Lhasa Yicai”) ** October 17, 2014 PRC - Online Lottery Service Hainan Jingli Network Technology Co., Ltd. (“Hainan Jingli”) ** May 3, 2018 PRC - Software Service Hainan Panfeng Network Technology Co., Ltd. (“Hainan Panfeng”) ** July 18, 2018 PRC - Software Service Hangzhou E-Sun Sky Network Technology Co., Ltd. (“Hangzhou E-Sun Sky Network”) ** June 21, 2018 PRC - Software Service Shenzhen Yicai Network Technology Co., Ltd. (“Shenzhen Yicai”) *** July 21, 2015 PRC - Online Lottery Service Beijing Baifengrun Science and Technology Co., Ltd. (“ Baifengrun Technology”) **** September 13, 2011 PRC - Development, operation of Online Gaming Shenzhen Kaisheng Jinfu Enterprise Management Co., Ltd. (“Shenzhen Kaisheng”) **** June 24, 2016 PRC - Online Spot Commodity Trading Services * A subsidiary of E-Sun Network ** A subsidiary of E-Sun Sky Network *** A subsidiary of Youlanguang Technology **** A subsidiary of Guangtiandi Technology ****** A subsidiary of The Multi Group The Company, its subsidiaries and VIEs are hereinafter collectively referred to as the “Group”. Most of the entities listed above are either holding companies or companies that have no operations. The entities that have substantive operations include: The Multi Group and its subsidiaries and the VIEs or subsidiaries of E-Sun Sky Computer. The Group provides mobile gaming services, sports information services, online spot commodity trading services and Information on Variable Interest Entities (“ VIEs”) PRC laws and regulations prohibit or restrict foreign ownership of Internet businesses. To comply with these foreign ownership restrictions, the Company operates its websites and provides online lottery purchase services (which has been ceased since March 2015) in the PRC through the VIEs. Prior to December 28, 2013, the Company entered into exclusive business cooperation agreements, power of attorney, equity interest pledge agreements, exclusive option agreements, financial support agreements and supplementary agreements to the exclusive option agreements (previously named as exclusive technical consulting and service agreements, power of attorney, equity pledge agreements, equity interest disposal agreements, financial support agreements, business operation agreements and intellectual properties license agreements prior to June 1, 2011) (the “Contractual Arrangements”), with several entities through E-Sun Sky Computer, which obligates E-Sun Sky Computer to absorb a majority of the expected losses from the activities of these entities’ activities, and entitles E-Sun Sky Computer to receive a majority of residual returns from these entities’ activities. As result of these contractual arrangements, these entities are considered as VIEs of the Company. Through these aforementioned agreements, the Company maintains the ability to approve decisions made by the VIEs, and the ability to acquire the equity interests in the VIEs when permitted by the PRC laws via E-Sun Sky Computer. As a result of the Contractual Arrangements and because the Company has been determined to 1) be the most closely associated with the VIEs as it has the power to direct the activities of the VIEs that most significantly impact their economic performance, and 2) has the obligation to absorb losses and/or the right to receive benefits of the VIEs that could potentially be significant to the VIEs, the Company consolidates the VIEs as required by Accounting Standards Codification (“ASC”) 810 (“ASC 810 ”), “Consolidation”. On December 28, 2013, the Company agreed to provide unlimited financial support to the VIEs for their operations. In addition, pursuant to the power of attorney agreements entered into among the Company, E-Sun Sky Computer and the nominee shareholders of the VIEs, on December 28, 2013, the nominee shareholders of the VIEs assigned the rights to attend the VIEs’ shareholders' meetings and to vote on all of the matters in the VIEs that require shareholders' approval, which was originally entrusted to E-Sun Sky Computer, to the Company. As a result of the assignment of power of attorney from E-Sun Sky Computer to the Company and the provision of unlimited financial support from the Company to the VIEs, the Company has been determined to be most closely associated with the VIEs within the group of related parties and replaced E-Sun Sky Computer as the primary beneficiary of the VIEs on December 28, 2013 . On January 10, 2017, as a result of the acquisition of Qufan Internet Technology Inc., the Company also entered into the contractual arrangements with Shenzhen Qufan Network Technology Co., Ltd., through Qufan Information Technology (Shenzhen) Co., Ltd, which obligates Qufan Information Technology (Shenzhen) Co., Ltd to absorb a majority of the expected losses from the activities of Shenzhen Qufan Network Technology Co., and entitles Qufan Information Technology(Shenzhen) Co., Ltd to receive a majority of residual returns from Shenzhen Qufan Network Technology Co., Ltd. The Company has disposed of Qufan Internet Technology Inc., together with its subsidiaries and related VIEs in February 2018. In February 2018, the above contractual arrangements between Qufan Information Technology (Shenzhen) Co., Ltd and Shenzhen Qufan Network Technology Co., Ltd were terminated. The carrying amounts of the assets, liabilities, the results of operations and cash flows of all of these VIEs included in the Group’s consolidated balance sheets, statements of comprehensive income (loss) and statements of cash flows are as follows: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 85,161 123,482 17,960 Restricted cash 1,237 1,253 182 Amounts due from intergroup companies 2,555 2,627 382 Prepayments and other current assets 33,692 28,934 4,209 Current assets for discontinued operations 40,193 - - Total current assets 162,838 156,296 22,733 Non-current assets: Property and equipment, net 99,138 67,349 9,796 Intangible assets, net 1,734 1,623 236 Deposits 4,248 4,484 652 Long-term investments 53,044 51,332 7,466 Other non-current assets 6,296 3,563 518 Non-current assets for discontinued operations 179,932 - - Total non-current assets 344,392 128,351 18,668 TOTAL ASSETS 507,230 284,647 41,401 LIABILITIES Current liabilities: Amounts due to intergroup companies 71,168 209,384 30,454 Accrued payroll and welfare payable 9,875 7,854 1,142 Accrued expenses and other current liabilities 51,658 54,200 7,883 Income tax payable 615 1,313 191 Current liabilities for discontinued operations 15,626 - - Total current liabilities 148,942 272,751 39,670 Non-current liabilities: Long-term payables 27,673 4,196 610 12,721 - Total non-current liabilities 40,394 4,196 610 TOTAL LIABILITIES 189,336 276,947 40,280 For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net revenues for continuing operations 5,259 22,489 20,578 2,993 Net revenues for discontinued operations 5,669 59,465 7,398 1,076 Net loss for continuing operations (9,557 ) (138,991 ) (103,383 ) (15,036 ) Net income for discontinued operations 706 14,957 2,183 317 For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net cash (used in) operating activities (50,876 ) (162,328 ) (77,280 ) (11,240 ) Net cash provided by investing activities 166,222 6,350 11,164 1,624 Net cash provided by financing activities - - 104,453 15,192 There was no pledge or collateralization of the VIEs’ assets. Creditors of the VIEs have no recourse to the general credit of the Company, which is the primary beneficiary of the VIEs. In addition, the Company has provided a loan of US$15.8 in financial support to its VIEs, E-Sun Sky Network, as of December 31, 2018 .

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation and use of estimates The accompanying consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”). The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the balance sheet dates and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions reflected in the Group’s consolidated financial statements include, but are not limited to, revenue recognition, allowance for doubtful accounts, useful lives of property and equipment, impairment of long-lived assets, long-term investments and goodwill, the purchase price allocation and fair value of non-controlling interests with respect to business combinations and acquisition of equity method investees, realization of deferred tax assets, uncertain income tax positions and share-based compensation. Actual results could materially differ from those estimates. Changes in Presentation of Comparative Information Certain comparative amounts have been reclassified to conform with the current year’s presentation. These reclassifications had no effect on the reported results of operations. Principles of consolidation The consolidated financial statements of the Group include the financial statements of the Company, its subsidiaries and VIEs in which it has a controlling financial interest. The results of the subsidiaries are consolidated from the date on which the Group obtained control and continue to be consolidated until the date that such control ceases. A controlling financial interest is typically determined when a company holds a majority of the voting equity interest in an entity. Furthermore, if the Company demonstrates that it has ability to control the VIEs through its rights to all the residual benefits of the VIEs and its obligation to fund losses of the VIEs then the entity is consolidated. All significant intercompany balances and transactions among the Company, its subsidiaries and VIEs have been eliminated on consolidation. Convenience translation Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the noon buying rate of US$1.00 to RMB6.8755 on December 31, 2018 in the city of New York for wire transfers of RMB as certified for customs purposes by the Federal Reserve Bank of New York. No representation is made that the RMB amounts could have been, or could be, converted into US$ at such rate. Foreign currency translation The functional currency of the Company, BVI, 500wan HK, 500.com UK, 500.com USA and 500.com JP is the US$. The functional currency of The Multi Group and its subsidiaries is EUR. E-Sun Sky Computer with its VIEs determined their functional currencies to be the RMB, which is their respective local currencies based on the criteria of ASC 830, “ Foreign Currency Matters” Transactions denominated in foreign currencies are remeasured into the functional currency at the exchange rates prevailing on the transaction dates. Exchange gains and losses resulting from foreign currency transactions are included in the consolidated statements of comprehensive income (loss). Business combinations and noncontrolling interests The Group accounts for its business combinations using the purchase method of accounting in accordance with ASC 805 (“ASC 805”), “ Business Combinations” . The purchase method of accounting requires that the consideration transferred to be allocated to the assets, including separately identifiable assets and liabilities the Group acquired, based on their estimated fair values. The consideration transferred in an acquisition is measured as the aggregate of the fair values at the date of exchange of the assets given, liabilities incurred, and equity instruments issued as well as the contingent considerations and all contractual contingencies as of the acquisition date. The costs directly attributable to the acquisition are expensed as incurred. Identifiable assets, liabilities and contingent liabilities acquired or assumed are measured separately at their fair value as of the acquisition date, irrespective of the extent of any noncontrolling interests. The excess of (i) the total of cost of acquisition, fair value of the noncontrolling interests and acquisition date fair value of any previously held equity interest in the acquiree over, (ii) the fair value of the identifiable net assets of the acquiree, is recorded as goodwill. If the cost of acquisition is less than the fair value of the net assets of the subsidiary acquired, the difference is recognized directly in earnings. The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Group determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. For the Company's majority-owned VIEs, a noncontrolling interest is recognized to reflect the portion of their equity which is not attributable, directly or indirectly, to the Group. “Net income (loss)” on the consolidated income statements includes the “net loss attributable to noncontrolling interests”. The cumulative results of operations attributable to noncontrolling interests are also recorded as noncontrolling interests in the Company's consolidated balance sheets. Cash and cash equivalents Cash and cash equivalents represent cash on hand and time deposits, which have original maturities of three months or less when purchased and which are unrestricted as to withdrawal and use. In addition, highly liquid investments which have original maturities of three months or less when purchased are classified as cash equivalents. Restricted cash Restricted cash represents cash held by banks which were granted by the government and designated only for the purchase of fixed assets for certain approved projects. In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires companies to include amounts generally described as restricted cash and restricted cash equivalents in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts presented in the statement of cash flows. The Company adopted the new standard effective January 1, 2018, using the retrospective transition method. All restricted cash was presented on the face of the consolidated balance sheet as “Restricted cash.” Time deposits Time deposits represent deposits in commercial banks with original maturities of greater than three months but less than a year. Interest income from time deposits is included in the consolidated statements of comprehensive income (loss). Accounts receivable and allowance for doubtful accounts Accounts receivable are carried at original invoiced amount less an allowance for doubtful accounts when collection of the amount is no longer probable. In evaluating the collectability of receivable balances, the Group considers factors such as customer circumstances or age of the receivable. Accounts receivable are written off after all collection efforts have ceased. Collateral is not typically required, nor is interest charged on accounts receivable. Property and equipment, net Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Category Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets - Repair and maintenance costs are charged to expense as incurred, whereas the cost of renewals and betterment that extend the useful lives of property and equipment are capitalized as additions to the related assets. Retirements, sales and disposals of assets are recorded by removing the cost and accumulated depreciation from the asset and accumulated depreciation accounts with any resulting gain or loss reflected in the consolidated statements of comprehensive income (loss). Intangible assets Intangible assets represent computer software, internet domain name, licensing agreement, and intangible assets arising from business combination. Computer software, internet domain name and licensing agreement purchased from third parties are initially recorded at cost and amortized on a straight line basis over their estimated useful lives of the respective assets. The Group performs valuation of the intangible assets arising from business combination to determine the relative fair value to be assigned to each asset acquired. The acquired intangible assets are recognized and measured at fair value and are expensed or amortized using the straight-line approach over the estimated useful life of the assets. Estimated useful lives of the respective assets are set out as follows: Category Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Licenses and brand name 10 years Mobile applications and software 5 years Goodwill The Group assesses goodwill for impairment in accordance with ASC 350-20 (“ASC 350-20”), “ Intangibles–Goodwill and Other: Goodwill” , which requires that goodwill to be tested for impairment at the reporting unit level at least annually and more frequently upon the occurrence of certain events, as defined by ASC 350-20. The Group has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step test in accordance with ASC 350-20. If the Group believes, as a result of the qualitative assessment, that it is more-likely-than-not that the fair value of the reporting unit is less than its carrying amount, the two-step quantitative impairment test described above is required. Otherwise, no further testing is required. In the qualitative assessment, the Group considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. In performing the two-step quantitative impairment test, the first step compares the carrying amount of the reporting unit to the fair value of the reporting unit based on either quoted market prices of the ordinary shares or estimated fair value using a combination of the income approach and the market approach. If the fair value of the reporting unit exceeds the carrying value of the reporting unit, goodwill is not impaired and the Group is not required to perform further testing. If the carrying value of the reporting unit exceeds the fair value of the reporting unit, then the Group must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. The fair value of the reporting unit is allocated to its assets and liabilities in a manner similar to a purchase price allocation in order to determine the implied fair value of the reporting unit goodwill. If the carrying amount of the goodwill is greater than its implied fair value, the excess is recognized as an impairment loss. In 2018, the Group performed qualitative assessments for the reporting units. Based on the requirements of ASC 350-20, the Group evaluated all relevant factors, weighed all factors in their entirety and concluded that the fair value was greater than the carrying amount of the newly acquired entities, and further impairment testing on goodwill was unnecessary as of December 31, 2018. Impairment of long-lived assets other than goodwill The Group evaluates its long-lived assets or asset group, including property and equipment and intangible assets, with finite lives for impairment whenever events or changes in circumstances (such as a significant adverse change to market conditions that will impact the future use of the assets) indicate that the carrying amount of a group of long-lived assets may not be fully recoverable. When these events occur, the Group evaluates the impairment by comparing the carrying amount of the assets to future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flow is less than the carrying amount of the assets, the Group recognizes an impairment loss based on the excess of the carrying amount of the asset group over its fair value. No impairment charge for the long-lived assets was recognized for any of the years presented. Short-term investments Short-term investments of the Company are comprised of an investment in targeted asset management plan with fixed rate. The Company accounts for all highly liquid investments with original maturities of greater than three months, but less than 12 months, in accordance with ASC 320-10, “Investments—Debt and Equity Securities”, which are classified as short-term investments. Dividend and interest income, including amortization of the premium and discount arising at acquisition for all categories of investments in securities are included in earnings. Any realized gains or losses on the sale of the short-term investments are determined on a specific identification method, and such gains and losses are reflected in earnings during the period in which gains or losses are realized. The Company evaluates whether a decline in fair value below the amortized cost basis is other-than-temporary in accordance with ASC 320. Other-than-temporary impairment loss is recognized in earnings equal to the entire excess of the debt security’s amortized cost basis over its fair value at the balance sheet date of the reporting period for which the assessment is made. Long-term investments The Company’s long-term investments consist of equity investments with and equity investments without readily determinable fair value and equity method investments. Prior to adopting ASC Topic 321, Investments Equity Securities (“ASC 321”) on January 1, 2018, the Company carries at cost its investments in investees that do not have readily determinable fair value and over which the Company does not have significant influence, in accordance with ASC Subtopic 325-20, Investments-Other: Cost Method Investments. In accordance with ASC 325, “ Investments-Other” , for investments in an investee over which the Group does not have significant influence and which do not have readily determinable fair value, the Group carries the investment at cost and only adjusts for other-than-temporary declines in fair value and distributions of earnings that exceed the Group’s share of earnings since its investment. Management regularly evaluates the impairment of the cost method investments based on performance and financial position of the investee as well as other evidence of market value. Such evaluation includes, but is not limited to, reviewing the investee’s cash position, recent financing, projected and historical financial performance, cash flow forecasts and financing needs. An impairment loss is recognized in earnings equal to the excess of the investment’s cost over its fair value at the balance sheet date of the reporting period for which the assessment is made. The fair value would then become the new cost basis of investment. Pursuant to ASC 321, equity investments, except for those accounted for under the equity method, those that result in consolidation of the investee and certain other investments, are measured at fair value, and any changes in fair value are recognized in earnings. For equity securities without readily determinable fair value and do not qualify for the existing practical expedient in ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”) to estimate fair value using the net asset value per share (or its equivalent) of the investment, the Company elected to use the measurement alternative to measure those investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer, if any. Equity securities with readily determinable fair value are measured at fair values, and any changes in fair value are recognized in earnings. For those equity investments that the Company elects to use the measurement alternative, the Company makes a qualitative assessment of whether the investment is impaired at each reporting date. If a qualitative assessment indicates that the investment is impaired, the entity has to estimate the investment’s fair value in accordance with the principles of ASC 820. If the fair value is less than the investment’s carrying value, the entity has to recognize an impairment loss in net income equal to the difference between the carrying value and fair value. As the Company’s investments in investees do not have readily determinable fair value and over which the Company does not have significant influence, when adopting ASC 321 on January 1, 2018, the Company elected to use the measurement alternative to measure those investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer, if any. There was no effect on the Company’s consolidated financial statements subsequent to the adoption of ASC 321. Investments in entities in which the Group can exercise significant influence but does not own a majority equity interest or control are accounted for using the equity method of accounting in accordance with ASC 323 (“ASC 323”), “Investments-Equity Method and Joint Ventures” . Under the equity method, the Group initially records its investment at cost and the difference between the cost of the equity investee and the fair value of the underlying equity in the net assets of the equity investee is recognized as equity method goodwill, which is included in the equity method investment on the consolidated balance sheets. The equity method goodwill is not subsequently amortized and is not tested for impairment under ASC 350. The Group subsequently adjusts the carrying amount of the investment to recognize the Group’s proportionate share of each equity investee’s net income or loss into earnings after the date of investment. The Group will discontinue applying the equity method if an investment (and additional financial supports to the investee, if any) has been reduced to zero. Under the conditions that the Group is not required to advance additional funds to an investee and the equity-method investment in ordinary shares is reduced to zero, if further investments are made that have a higher liquidation preference than ordinary shares, the Group would recognize the loss based on its percentage of the investment with the same liquidation preference, and the loss would be applied to those investments of a lower liquidation preference first before being further applied to the investments of a higher liquidation preference. The Group evaluates the equity method investments for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable. Factors considered by the Company when determining whether an investment has been other-than-temporarily-impaired, includes, but not limited to, the length of the time and the extent to which the market value has been less than cost, the financial performance and near-term prospect of the investee, and the Company’s intentand ability to retain the investment until the recovery of its cost. An impairment loss on the equity method investments is recognized in earnings when the decline in value is determined to be other-than-temporary. According to the above testing, an impairment loss of RMB28.8 million and RMB149.9 million (US$ 21.8 million) for the long-term investments was recognized during the year of 2017 and 2018, respectively. Investments in limited partnerships greater than 5% are considered more than minor and accounted for using the equity method, unless it is readily apparent that the Group has virtually no influence over the partnership’s financial and operating policies. Fair value measurements Financial instruments include cash and cash equivalents, restricted cash, time deposits, accounts receivable, investment in targeted asset management plan with fixed rate (Note 6), other receivables, and accounts payable. As of December 31, 2017 and 2018, the carrying values of these financial instruments, approximate their fair values due to their short-term maturities. The Group applies ASC 820 (“ASC 820”), “Fair Value Measurements and Disclosures ”. ASC 820 defines fair value, establishes a framework for measuring fair value and requires disclosures to be provided on fair value measurement. ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1— Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2— Include other inputs that are directly or indirectly observable in the marketplace. Level 3— Unobservable inputs which are supported by little or no market activity. ASC 820 describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach, and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The measurement is based on the value indicated by current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace an asset. Revenue recognition The Group’s revenues were derived principally from online lottery purchase services before voluntary suspension of this service since April 2015. During the voluntary suspension period, the Group diversified its revenue streams, and derived revenues from mobile gaming services, sports information services, online spot commodity trading services and online gaming services. The Group adopted ASC Topic 606 Revenue from Contracts with Customers (“ASC 606”), from January 1, 2018, using the modified retrospective method. Revenues for the year ended December 31, 2018 were presented under ASC 606, and revenues for the years ended December 31, 2017 and 2016 were not adjusted and continue to be presented under ASC Topic 605, Revenue Recognition. The Group set up an implementation schedule and analyzed each of the Group’s revenue streams in accordance with ASC 606 to determine the impact on the Group’s consolidated financial statements. After the analyzation, we concluded that there was no substantial impact on the Group’s consolidated financial statements upon the adoption of ASC 606. The Group’s revenue recognition policies effective on the adoption date of ASC 606 are as follows: Online lottery purchase services The Group earns service income for online lottery purchase services and revenues are generated from processing lottery purchase orders from end users (“Service Fee”). The Group receives purchase orders from end users through its online platforms, which include website and mobile applications, and processes the orders with the lottery administration centers. Service Fee is received from the lottery administration centers based on the pre-determined service fee rate and the total amount of the processed orders. Pursuant to ASC 605-45, “ Principal Agent Considerations Contingent service fee The Group was also entitled to receive additional Service Fee from lottery administration centers when the total amounts of purchase orders reach an agreed threshold (“Contingent Service Fee”). As the Group is the agent in providing lottery purchase services, any Contingent Service Fee received is recorded as net revenue when the agreed thresholds are reached. Once the Group reaches the agreed thresholds, the Contingent Service Fee is then fixed and not subject to any adjustments. As a result of the voluntarily suspension of the online lottery purchase services mentioned above, the Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. The Super VIP incentive Certain qualified end users (“Super VIP”) are entitled to receive incentives from the Group based on actual purchase amount of each transaction. As the Group does not receive an additional service or benefit from the Super VIP other than service fee earned from lottery administration centers by the Group from the transaction, the incentives are recognized as a reduction of revenue at each year end in accordance with ASC 605-50, “ Customer Payments and Incentives” . The Group did not generate any revenue from this source since April 2015, and it is uncertain when we will be able to generate this fee again in the future. Lottery pool purchase service Lottery pools involve individual end users purchasing a share in a pooled lottery outcome or group of outcomes with other end users. Through the lottery pool purchase service, an end user, an initiator, starts a lottery pool by specifying a range of parameters, such as the lottery portfolio, total purchase amount and payout ratio. The initiator is required to commit a minimum initial purchase amount when they initiate a pool, usually a certain percentage of the total purchase amount. Other end users then join the pool by agreeing to the parameters set by the initiator and committing on the purchase amount. When the total purchase amount as specified by the initiator is reached, the pooled lottery purchase order will be delivered in the manner specified by the initiator. When the actual purchase amount does not reach the total purchase amount as specified by the initiator but reaches a certain percentage of total purchase amount before the lottery pool purchase deadline, the Group contributes the remaining outstanding purchase amount (i.e., residual amount of lottery pool) to complete the lottery pool transaction. If the tickets win prizes from the lottery, the Group distributes the cash prizes to the end users based on the predetermined payout ratio, and the residual amount after distribution is retained by the Group. Since the Group contributes the residual amount of lottery pool to earn Service Fee from the purchase made by the lottery pool and does not provide any service to the lottery administration centers, the residual amount of lottery pool contributed by the Group paid to the lottery administration centers is recognized as a reduction of revenue. The residual amount of the lottery pool retained by the Group after distribution of the prizes are presented as “other operating income”, and recognized upon the announcement of lottery results, as the Group’s principal activity is to provide lottery purchase services to end users. The Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. Mobile Gaming Services The Group provides mobile gaming services through its designated mobile applications Quiz, Night of Texas Hold’em Poker and Paiyou for Texas Hold’em Poker, and derives revenues from in-game virtual tokens and other virtual items in its game development operations. Once the users purchase virtual tokens or other virtual items through the Group’s own charging system, the Group has an implied obligation to provide the services which enable the virtual tokens or other virtual items to be displayed or used in the games. Thus, the Group initially records the proceeds received from the sales of virtual tokens and other virtual items as deferred revenue, and once they are consumed when the services are rendered to the respective paying players, the Group recognizes the attributable portion of the deferred revenue as revenue. For consumable virtual items representing items that are extinguished after consumption in the form of fixed charges levied on each round of games played, the Group recognizes revenue when the items are consumed and the related services are rendered, since the paying players will not continue to benefit from the virtual items thereafter. For durable virtual items that are accessible and beneficial to paying players over an extended period, the Group recognizes revenue ratably over the average life of durable virtual items for the applicable game, which the Group makes best estimates to be average playing period of paying players. The Group tracks each paying player’s log-in history to estimate the Average playing period of paying players. While the Group believes its estimates to be reasonable based on sufficient available paying player information, it may revise such estimates in the future as the games’ operation periods change or there is indication that the similarities in characteristics and playing patterns of paying players of the games change. Any adjustments arising from changes in the estimates of the average paying player life would be applied prospectively. The Group disposed of a group of components that engage in the mobile gaming services by sale on February 9, 2018, which is reported as discontinued operations for the year ended December 31, 2018. Sports Information Services The Group offers a comprehensive sports information portal via a designated mobile application, which covers (i) real time soccer match information; and (ii) data-driven soccer match predictions generated by our proprietary analysis engine. Users can also post free or pay-per-view contents such as proprietary observations and analyses on the sports information portal. The users pay for each information and data subscription at a fixed price, and the Group pays the original information providers a fixed percentage of total purchase amount. Revenue is recognized when users is accessible to the pay-per-view contents. The Group records the revenue on a net basis because the Group is not the primary obligor to provide the information, but acts as an agent in providing such purchase services. Online spot commodity trading services The Group provides online spot commodity trading services through our designated website and mobile application in Shenzhen Kaisheng. The Group provides customers with reliable online spot commodity trading for gold trade and delay products across PC and mobile devices. The Group processes customer orders through a commercial bank, and later formed a joint venture with Shenzhen Gold Exchange on May 11, 2018 to provide online spot commodity trading services. Trading commissions are received from the commercial bank based on the pre-determined commission fee rate and the total amount of the processed orders. The Group began to generate a small amount of revenue from trading commissions on the online spot commodity trading services since 2017. Online gaming services The Group also provides online lottery betting and online casino platforms through the Group’s designated website after the acquisition of TMG in July 2017. The Group earns difference between betting and winning for online lottery betting services and online casino platforms as revenues that are generated from our registered users. The registered users enter into certain terms and conditions when they first open their accounts with the Group. Lottery and Casino purchase orders are placed by users through the Group’s online platforms view website. Then the Group process these orders. Prior to processing orders, users prepay all purchase amounts. The Group pays users prizes when there are any winnings attributable to users. The Group record revenues on a net basis by deducting the wi

CONCENTRATION OF RISKS

CONCENTRATION OF RISKS	12 Months Ended
	Dec. 31, 2018
Risks and Uncertainties [Abstract]
CONCENTRATION OF RISKS	3. CONCENTRATION OF RISKS Concentration of credit risk Assets that potentially subject the Group to significant concentration of credit risk primarily consist of cash and cash equivalents, restricted cash, time deposits and accounts receivable. As of December 31, 2018, substantially all of the Group’s cash and cash equivalents and time deposits were deposited in financial institutions located in the PRC, Hong Kong and Malta, which management believes are of high credit quality. Certain Risks and Uncertainties The Group acquired the Multi Group in July 2017, the operations of which are dependent on its continued licensing by the Nordic countries gaming regulatory bodies such as the Curacao e-Gaming license, the remote gambling licenses from Malta, the remote operating licenses from the UK, the remote bookmaker’s license from Ireland and the license from Sweden. The loss of a license could have a material adverse effect on future results of its operations. The Group is dependent on the PRC and European markets for a significant number of its patrons and revenues. If economic conditions in these areas deteriorate or additional gaming licenses are awarded to other competitors, the Group’s results of operations could be adversely affected. The Group is also dependent on the PRC economy in general, and any deterioration in the national economic, energy, credit and capital markets could have a material adverse effect on future results of operations. The Group is dependent upon a stable gaming and admission tax structure in the locations in which it operates. Any change in the tax structure could have a material adverse effect on future results of operations. The RMB, which is not freely convertible into foreign currencies. On January 1, 1994, the PRC government abolished the dual rate system and introduced a single rate of exchange as quoted daily by the People’s Bank of China (the “PBOC”). However, the unification of the exchange rates does not imply that the RMB may be readily convertible into US$ or other foreign currencies. All foreign exchange transactions continue to take place either through the PBOC or other banks authorized to buy and sell foreign currencies at the exchange rates quoted by the PBOC. Approval of foreign currency payments by the PBOC or other institutions requires submitting a payment application form together with suppliers’ invoices, shipping documents and signed contracts. Additionally, the value of the RMB is subject to changes in central government policies and international economic and political developments affecting supply and demand in the PRC foreign exchange trading system market. Current vulnerability due to change of regulations or policies The Group’s operations may be adversely affected by significant political, economic and social uncertainties in the PRC. Although the PRC government has been pursuing economic reform policies for more than 30 years, no assurance can be given that the PRC government will continue to pursue such policies or that such policies may not be significantly altered, especially in the event of a change in leadership, social or political disruption or unforeseen circumstances affecting the PRC’s political, economic and social conditions. There is also no guarantee that the PRC government’s pursuit of economic reforms will be consistent or effective. In October 2012, the Group was notified by China Sports Lottery Administration Center that the Group was one of the two entities that had been approved by the Ministry of Finance (“MOF”) to conduct online sales of sports lottery products in PRC on behalf of China Sports Lottery Administration Center. In particular, such approval mandated that the China Sports Lottery Administration Center use its best effort to develop an online lottery sales management system as part of a pilot program for online lottery sales in PRC, and once such a management system is finished, the China Sports Lottery Administration Center should apply again for approval from the MOF for official commencement of online lottery sales in the PRC. However, since the operation of online sports lottery sales services by China Sports Lottery Administration Center itself is in a pilot phase and is subject to further approval by the MOF, the Group’s operation of online sales of sports lottery products may be subject to suspension if China Sports Lottery Administration Center fails to obtain such further approval from the MOF. On January 15, 2015, the MOF, the Ministry of Civil Affairs and the General Administration of Sports of the People’s Republic of China jointly promulgated the Notice on Issues related to the Self-Inspection and Self-Remedy of Unauthorized Online Lottery Sales (the “ Self-Inspection Notice”) , as a further step to regulate the lottery market in PRC and sanction unauthorized online lottery sales. On February 28, 2015, all sports lottery administration centers temporarily suspended online purchase orders for lottery products in response to the Self-Inspection Notice. On April 3, 2015, eight competent government authorities, namely, the MOF, the Ministry of Public Security, the State Administration for Industry and Commerce, the Ministry of Industry and Information Technology, Ministry of Civil Affairs, People’s Bank of China, the General Administration of Sports of China and China Banking Regulatory Commission, jointly released a public bulletin with regard to online lottery sales in China, or Bulletin 18. Bulletin 18 mandates, among other things, that (i) all institutions, online entities, or individuals which provide unauthorized online lottery sales services, either directly or through agents, shall immediately cease such services and all provincial governmental authorities of finance, civil affairs and sports shall investigate and sanction unauthorized online lottery sales in their respective jurisdictions according to relevant laws and regulations; and (ii) lottery issuance authorities that plan to sell lottery products online are required to obtain a consent from the Ministry of Civil Affairs or the General Administration of Sports of China in order to submit an application for written approval by the MOF. Although the Group is one of the two entities that had been approved by the MOF to conduct online sales of sports lottery products in PRC on behalf of China Sports Lottery Administration Center, the Group decided to voluntarily and temporarily suspend all of its lottery sales services on April 4, 2015. As of December 31, 2018, the online lottery sales business is still not resumed.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	4. DISCONTINUED OPERATIONS Disposition of Qufan On February 9, 2018, the Company entered into a share disposal agreement with the founding shareholders of Qufan and disposed of its 51% equity interest in Qufan Internet Technology Inc., and Shenzhen Qufan Network Technology Co., Ltd, together with their subsidiaries (together “Qufan”) for a total consideration of USD 19.4 122.0 From February 9, 2018, the Company no longer retained any financial interest over Qufan and accordingly deconsolidated the Qufan’s financial statements from the Company’s consolidated financial statements. The disposal of Qufan represented a strategic shift and has a major effect on the Company’s result of operations. Accordingly, assets, liabilities, revenues, expenses and cash flows related to Qufan have been reclassified in the consolidated financial statements as discontinued operations for all periods presented. On February 9, 2018, the Company calculated a gain resulting from such disposition as follows: As of February 9, 2018 RMB Consideration 121,964 Cash and cash equivalents 41,699 Short-term investments 20,000 Prepayments and other receivables 6,428 Property and equipment, net 1,490 Intangible assets, net 45,847 Goodwill 130,613 Long-term investments 2,000 Other non-current assets 14 Accrued payroll and welfare payable (5,104 ) Accrued expenses and other current liabilities (756 ) Income tax payable (4,927 ) Deferred revenue (5,527 ) Deferred tax liabilities (12,554 ) Net assets of Qufan 219,223 Equity interest percentage 51 % Less: Net assets of Qufan to the Company 111,804 Gain on disposal of Qufan 10,160 The condensed cash flows of Qufan were as follows for the years ended December 31, 2016, 2017 and 2018: For the years ended December 31, 2016* 2017 2018** 2018** RMB RMB RMB US$ Net cash (used in) provided by operating activities (351 ) 11,010 839 122 Net cash used in investing activities - (22,000 ) - - Net cash provided by financing activities 510 52,250 - - The operating results from discontinued operations included in the Company’s consolidated statements follows for the years ended December 31, 2016, 2017 and 2018: For the years ended December 31, 2016* 2017 2018** 2018** RMB RMB RMB US$ Major classes of line items constituting pretax profit of discontinued operations Net Revenues 5,669 59,465 7,398 1,074 Cost of services (1,392 ) (15,613 ) (1,885 ) (274 ) Sales and marketing (1,523 ) (13,682 ) (1,938 ) (282 ) General and administrative (280 ) (3,977 ) (443 ) (64 ) Service development expenses (854 ) (9,749 ) (688 ) (100 ) Other income and (expenses) that are not major 1 542 77 11 Income from discontinued operations, before income tax 1,621 16,986 2,521 365 Income tax expense (914 ) (1,659 ) (338 ) (49 ) Income from discontinued operations, net of 707 15,327 2,183 316 Gain on deconsolidation of the subsidiary, net of income tax - - 10,160 1,478 Net income from discontinued operations, net of 707 15,327 12,343 1,794 * Included financial results of discontinued operations from November 25, 2016 to December 31, 2016. ** Included financial results of discontinued operations from January 1, 2018 to February 9, 2018.

BUSINESS COMBINATION

BUSINESS COMBINATION	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
BUSINESS COMBINATION	5. BUSINESS COMBINATION Business Combination in 2017: Acquisition of Daguoxiaoxian On May 8, 2017, Shenzhen Qufan entered into a share purchase agreement with the shareholder of Daguoxiaoxian, named Fu Rong, to acquire 70% equity interests of Daguoxiaoxian with the consideration of RMB2.0 million (“Purchase agreement”). Previously, Daguoxiaoxian mainly operates market promotion business and also owns a gaming cooperation agreement (“cooperation agreement”) with Tianjin Zhongqiweiye Sports development Co., Ltd. By obtaining the cooperation agreement, Daguoxiaoxian is authorized to operate China Competitive Poker Championship, from May 14, 2017 to May 14, 2018, with one-year extension upon the expiration if no objection between both parties. The Group acquired Daguoxiaoxian primarily for the cooperation agreement. The Group has subsequently disposed Shenzhen Qufan together with its subsidiary Daguoxiaoxian in February 2018 due to a change of business strategy. Acquisition of The Multi Group On July 17, 2017 (“the acquisition date”), the Company acquired 93.0% equity interest of The Multi Group (“TMG”) through 500.com Limited for a total consideration of approximately EUR49.8 million. The Multi Group engages in operating Multilotto.com (“Multilotto”) which is considered one of the top online lottery betting and online casino platforms in the Nordic countries where it holds substantial market share. As of July 17, 2017, the Group settled payment of EUR49,754 cash consideration for the acquisition. The Group recognized RMB18,766 of acquisition-related costs that were expensed in 2017. These costs are included in the line item “General and administrative expenses” in the statement of comprehensive income (loss). The following table summarizes the fair values of the assets acquired and liabilities assumed at the acquisition date. The Group obtained a third-party valuation of certain intangible assets. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB of the acquisition date on July 17, 2017. Amount Amount Amortization Years EUR RMB License 19,400 150,377 10.0 Brand name 11,100 86,041 10.0 Software 900 6,976 5.0 Others 7,116 55,156 Total identifiable assets acquired 38,516 298,550 Deferred tax liabilities (1,164 ) (9,023 ) Other current liabilities (1,422 ) (11,022 ) Total liabilities assumed (2,586 ) (20,045 ) Net identifiable assets acquired 35,930 278,505 Noncontrolling interests # 2,915 22,595 Total Consideration 49,754 385,662 Goodwill 16,739 129,752 # The fair value of redeemable noncontrolling interest was initially recorded as the value assessed by the third-party appraiser on the acquisition day. As of the acquisition date, the fair value of the 7% noncontrolling interest in The Multi Group is estimated to be EUR2,915. The fair value of the noncontrolling interest was estimated using the Income Approach. As the Multi Group was a private company, the fair value measurement is based on significant inputs that are not observable in the market and thus represents a Level 3 measurement as defined in ASC 820. The fair value estimates are based on (a) internal rate of return of 16%; (b) a long-term sustainable growth rate of 2%; (c)adjustment of risk premium of 3%; and (d) financial multiples of companies in the same industry as The Multi Group. The redeemable noncontrolling interest was subsequently adjusted by recording ASC 810-10 attribution based on the earnings or losses of the investment allocable to the noncontrolling interest. On January 1, 2019, the Company received the repurchase notice from the noncontrolling interest shareholder, which requested the Company to repurchase all of the 7% shares at a total amount of EUR3,745. As of December 31, 2018, it is determined that the noncontrolling interest will probably become redeemable and the redemption amount will be higher than the carrying amount after ASC 810-10 attribution adjustment. The Company subsequently recognized the changes in the redemption value immediately and adjusted the carrying amount of the redeemable noncontrolling interest to equal the redemption amount of EUR3,745. The excess amount of redemption amount in excess of fair value as of December 31, 2018 was treated as being akin to a dividend (in accordance with footnote 17 of ASC 480-10-S99-3A), which was recorded into Retained earnings (APIC in absence of Retained earnings). For the difference between fair value and the carrying amount after ASC 810-10 attribution adjustment, it is accounted for as equity transactions and classified this portion into APIC based on the guidance in ASC 810-10-45-23. The fair value of redeemable noncontrolling interest was assessed by the third-party appraiser on December 31, 2018. As of December 31, 2018, the fair value of the 7 2 ,504 17.5 2 5.5 Accordingly, the carrying value of the noncontrolling interest as of December 31, 2017 and 2018 is stated as follows: EUR RMB USD Noncontrolling interest-valuation* 2,915 22,595 Total comprehensive loss attributable to noncontrolling interest in 2017 (70 ) (543 ) Redeemable noncontrolling interest as of December 31, 2017 2,845 22,052 Total comprehensive loss attributable to noncontrolling interest (413 ) (3,223 ) (469 ) Adjustment to redemption value** 1,313 10,559 1,536 Redeemable noncontrolling interest as of December 31, 2018 3,745 29,388 4,274 *Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date. ** Adjustment to redemption value including two portions: 1) the excess amount of redemption amount in excess of fair value as of December 31, 2018, 2) the difference between fair value and the carrying amount after ASC 810-10 attribution adjustment. The fair value as of December 31, 2018 was evaluated by third party appraiser on December 31, 2018. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.8473 RMB on December 31, 2018. Goodwill, which is not tax deductible, is primarily attributable to the excess of the consideration and fair value of noncontrolling interest over the fair value of the net identifiable assets of the acquiree and is related to synergies expected to be achieved from the acquisition. Acquired intangible assets have weighted average economic lives from the date of purchase as follows: License 10.0 years Brand name 10.0 years Software 5.0 years Since the acquisition date, The Multi Group contributed revenues of RMB49,370 (EUR6,447) and RMB105,511(EUR13,507) to the Group for the year ended 2017 and 2018, respectively, and contributed net income of RMB2,959 (EUR386) and net loss of RMB18,050(EUR2,311) to the Group for the years ended 2017 and 2018, respectively. The following unaudited pro forma information summarizes the results of operations of the Group for the years ended December 31, 2016 and 2017, as if the acquisition had been completed on January 1, 2016. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of what operating results would have been had the acquisition actually taken place on the date indicated and may not be indicative of future operating results. The pro forma adjustments are based upon available information and certain assumptions that management believes are reasonable. For the years ended December 31, (unaudited) 2016 2016 2017 2017 EUR RMB EUR RMB Pro forma total revenues 11,686 76,893 12,188 93,334 Pro forma net income (loss) 2,519 16,576 (1,614 ) (12,360 ) Pro forma net income (loss) attributable to 500.com Limited 2,343 15,416 (1,501 ) (11,495 ) These amounts have been calculated after applying the Company’s accounting policies.

INVESTMENTS

INVESTMENTS	12 Months Ended
	Dec. 31, 2018
Investments [Abstract]
INVESTMENTS	6. INVESTMENTS Short-term Investments Short-term investments of the Group comprised of an investment in targeted asset management plan with fixed rate. The investment was carried at fair value of RMB100,000 and RMB100,000 (US$14,544) as of December 31, 2017 and 2018, respectively. Long-term Investments As of As of As of RMB RMB US$ Carrying amount of Equity investments at fair value without readily determinable fair value 66,237 69,357 10,088 Carrying amount of equity method investments 280,836 125,018 18,183 Carrying amount of long-term investments 347,073 194,375 28,271 Equity investments at fair value without readily determinable fair value Equity investments at fair value without readily determinable fair value consisted of the following: As of December 31 , 2017 As of December 31 , 2018 As of December 31 , 2018 RMB RMB US$ Equity investments at fair value without readily determinable fair value Private companies 47,214 49,990 7,271 Limited partnerships 22,290 22,634 3,292 Cost of Equity investments at fair value without readily determinable fair value 69,504 72,624 10,563 Impairment loss on Equity investments at fair value without readily determinable fair value (3,267 ) (3,267 ) (475 ) Carrying amount of Equity investments at fair value without readily determinable fair value 66,237 69,357 10,088 Private companies In March 2015, the Group acquired 10% of the share capital of Hzone Holding Company, a non-listed company, for a cash consideration of US$2,000. In March 2015, the Group acquired 2% of the share capital of Big Stomach Limited, a non-listed company, for a cash consideration of US$500. In August 2015, the Group acquired 1.29% of the share capital of Topgame Global Limited, a non-listed company, for a cash consideration of US$1,373. The Group also acquired 1.29% of the share capital of its VIEs, Caicaihudong (Beijing) Technology Co., Ltd. and Youwang Technology (Shanghai) Co., Ltd., for cash consideration of RMB13 and RMB477, respectively. In June 2016, the Group acquired 0.84% of the share capital of Beijing Weisaishidai Sports Technology Co., Ltd, for a cash consideration of RMB10,000. The equity interest was subsequently diluted to 0.83% in 2018 due to increase in shareholder of Beijing Weisaishidai Sports Technology Co., Ltd. In November 2016, the Group acquired 2% of the share capital of Techelix Co., Ltd, a non-listed company, for a cash consideration of US$600. In February 2018, the Group made an additional investment of US$300 in Techelix Co., Ltd. In June 2018, the Group transferred the equity investment of US$50 to a third party. The equity interest was diluted to 1.98% in 2018 due to increase in shareholder of Techelix Co., Ltd. In March 2017, the Group acquired 5% of the share capital of Cheerful Interactive Limited, a non-listed company, for a cash consideration of US$1,250. The equity interest was subsequently diluted to 3.92% in 2018 due to increase in shareholder of Cheerful Interactive Limited. Limited partnerships In June 2014, the Group and Danhua Capital L.P (“Danhua”) entered into a subscription agreement, whereby the Group agreed to purchase limited partnership interest in Danhua’s fund (the “Fund”) in the amount of US$1,000, which entitles the Group an aggregate equity interest of approximately 1.1% in the Fund. The Group has fully funded the subscription to the Fund in installments as of December 31, 2016. There was no unfunded commitment to the Fund as of December 31, 2018. The Fund’s investment strategy is primarily to invest in emerging companies operating in the USA and PRC. The Fund’s investments are focused in the technology, media and telecommunications sectors. The Fund is scheduled to be in existence until November 15, 2021, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In June 2015, the Group and Beijing Heimatuoxin Venture Capital L.P. (“Heimatuoxin”) entered into a subscription agreement, whereby the Group agreed to purchase 3.49% limited partnership interest in Heimatuoxin for the total amount of RMB3,000. As of the end of December 2018, the Group received RMB587 in dividend and RMB120 in return of principal from Heimatuoxin. The Group paid the subscription in full to Heimatuoxin in 2015, and there was no outstanding payment as of December 31, 2018. Heimatuoxin’s investment strategy is primarily to invest in emerging companies operating in the PRC. Heimatuoxin’s investments are focused in the technology, media and telecommunications sectors. Heimatuoxin is scheduled to be in existence until April 16, 2021, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In June 2016, the Group and Shanghai Jingyan Corporate Development Centre L.P. (“Jingyan”) entered into a subscription agreement, whereby the Group agreed to purchase 4.64% limited partnership interest in Jingyan for a total amount of RMB6,000. As of December 31, 2018, the limited partnership interest was diluted to 4.31% because of the joining of additional limited partners. The Group has fully funded the subscription to Jingyan in installments as of December 31, 2018. There was no unfunded commitment to the Jingyan as of December 31, 2018. Jingyan’s investments are focused in the consulting services of corporate management, business information, exhibition, media and telecommunications sectors. Jingyan is scheduled to be in existence until the fifth anniversary of the Initial Contribution Date, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. In December 2016, the Group and zPark Capital Ⅱ,L.P. (“zPark”) entered into a subscription agreement, whereby the Group agreed to purchase 2% limited partnership interest in zpak for a total amount of US$1,000. As of December 31, 2018, the limited partnership interest was diluted to 1.75% due to the joining of additional limited partners. The Group paid the subscription in full to zPark in 2016, and there was no outstanding payment as of December 31, 2018. As of the end of December 2018, the Group received US$28 in dividend and US$15 in return of principal from zPark. zPark’s investment strategy is primarily to make venture capital investments, principally by investing in and holding equity and equity-oriented securities of privately held early-stage technology companies, with an emphasis on companies with a connection to China, Japan and other Asia markets. The general purposes of zPark are to buy, hold, sell and otherwise invest in Securities, whether readily marketable or not; to exercise all rights, powers, privileges and other incidents of ownership or possession with respect to Securities held or owned by zPark; to enter into, make and perform all contracts and other undertakings. zPark is scheduled to be in existence until the tenth anniversary of the Initial Contribution Date, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. All of these above-mentioned equity investments without readily determinable fair value were classified as cost method investments prior to adopting ASC 321. As of December 31, 2017, the carrying amount of the Group’s cost method investments was RMB47,214, net of RMB3,267 in accumulated impairment. In accordance with ASC 321, the Group elected to use the measurement alternative to measure such investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer, if any. As of December 31, 2018, the carrying amount of the Company’s equity investments measured at fair value using the measurement alternative was RMB49,990 (US$7,271), net of RMB3,267 (US$475) in accumulated impairment. Impairment charges recognized on equity investment in Big Stomach Limited was RMB3,267 for the year end December 31, 2016 and no additional impairment recognized for the years ended December 31, 2017 and 2018. Equity method investments Equity method investments consisted of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Equity Method Investments Private company - 9,000 1,309 Listed company 283,655 297,938 43,333 Limited partnership 27,331 20,381 2,964 Cost of equity method investments 310,986 327,319 47,606 Impairment loss on equity investment (27,893 ) (184,377 ) (26,816 ) Loss from equity method investment (2,257 ) (17,924 ) (2,607 ) Carrying amount of equity method investments 280,836 125,018 18,183 Private company I n May 2018, the Group acquired 45% of the share capital of Shenzhen Jinyingzaixian Technology Service Co., Ltd. (“Jinyingzaixian”), a non-listed company, through Shenzhen KaishengJinfu Enterprise Management Co., Ltd., for a cash consideration of RMB9,000. Jinyingzaixian is principally engaged in spot commodity trading services in China. The Group’s proportionate share of Jinyingzaixian’s net loss recognized in the Statements of Comprehensive loss was RMB5,948 (US$865) during the year ended December 31, 2018. Publicly listed company On June 6, 2017, the Company acquired from Melco LottVentures Holdings Limited an aggregate of 1,278,714,329 shares (the “Sale Shares”) of Loto Interactive Limited (“Loto Interactive”, formerly known as MelcoLot Limited), a company listed on the Hong Kong Stock Exchange (Stock Code: 8198), representing approximately 40.65% of Loto Interactive’s existing issued share capital as of the acquisition date. The total consideration paid for the Sale Shares is approximately HK$322.2 million (US$41.3 million), equivalent to approximately HK$0.252 per Sale Share. Loto Interactive is principally engaged in distribution of mobile gaming and the provision of lottery-related technologies, systems and solutions to two state-run lottery operators in China, namely the China Welfare Lottery Issuance Centre and China Sports Lottery Administration Centre (“CSLA”). Loto Interactive is a distributor of high quality, versatile lottery terminals and parts for CSLA, which is the exclusive sports lottery operator in China. Loto Interactive provides game upgrading technology and system maintenance service for the rapid-draw game “Shi Shi Cai” in Chongqing Municipality. The Group’s proportionate share of Loto Interactive’s net loss recognized in the Statements of Comprehensive loss was RMB2,469 and RMB12,233(US$1,779) during the year ended December 31, 2017 and 2018, respectively. Limited partnership In April 2015, the Group and Guangda Sports Culture Capital L.P (“Guangda Sports Culture”) entered into a subscription agreement, whereby the Group agreed to purchase 9.9% limited partnership interest in Guangda Sports Culture’s fund for a total amount of RMB20,000, which was fully funded as of December 31, 2015. Guangda Sports Culture’s investment strategy is primarily to invest in emerging companies operating in the PRC. Guangda Sports Culture’s investments are focused in the sports sectors. Guangda Sports Culture is scheduled to be in existence until February 9, 2018, and was extended to February 9, 2020 in 2018, unless terminated sooner or extended in accordance with the amended and restated limited partnership agreement. The Group’s proportionate share of Guangda’s net income recognized in earnings was RMB341 and RMB2,833 (US$412) during the year ended December 31, 2017 and 2018, respectively. In Feb 2017, the Group and Sparkland Venture Capital Growth Fund L.P (“Sparkland”) entered into a subscription agreement, whereby the Group agreed to purchase 6.67% limited partnership interest in Sparkland’s fund for a total amount of US$1,000, which was fully funded as of December 31, 2017. Sparkland’s investments are focused in the Virtual Reality and Augmented Reality industries. The Group’s proportionate share of Sparkland’s net income recognized in earnings was RMB323 (US$47) during the year ended December 31, 2018. All of these above-mentioned investments were classified as equity method investments as the Group does have significant influence over the entities. The net operating losses from these equity method investments recognized for the years ended December 31, 2017 and 2018 were RMB2,128 and RMB15,025 (US$2,185), respectively. The Group recognized an impairment of RMB28,781 and RMB149,896 (US$21,801) in Loto Interactive for the year ended December 31, 2017 and 2018, respectively.

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
ACCOUNTS RECEIVABLE	7. ACCOUNTS RECEIVABLE Accounts receivable and the related allowance for doubtful accounts are summarized as follows: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Accounts receivable 19,847 19,847 2,887 Less: Allowance for doubtful accounts (19,847 ) (19,847 ) (2,887 ) Accounts receivable, net - - - After voluntary suspension of online lottery sales since April 2015, considering age of these receivables and after exhausting all collection efforts, the Group believes that the collection of the amount is no longer probable. The Group recorded full allowance of the outstanding accounts receivable at the end of year 2015.

PREPAYMENTS, OTHER RECEIVABLES

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS	8. PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS Prepayments and other receivables consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Receivables from third party payment service providers 757 9,730 1,415 Interest receivables 718 540 79 Deposit for share repurchase * 13,318 - - Deferred sponsorship and advertising expenses 1,993 1,019 148 Prepaid insurance 5,344 3,740 544 Deferred expense** 13,702 10,608 1,543 Receivables for disposal of long-term investments*** 9,322 4,332 630 Deductible value-added input tax 12,611 12,585 1,830 Others 23,551 22,644 3,294 81,316 65,198 9,483 * Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has withdrawn the repurchase and collected the deposit in Feb 2018. ** Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods. *** Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Qufan as of December 31, 2018. Deposits are made for offices and other leases, and will be refunded upon the end of the leases, which are expected to be over 1

PROPERTY AND EQUIPMENT, NET

PROPERTY AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT, NET	9. PROPERTY AND EQUIPMENT, NET Property and equipment consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Electronics and office equipment 43,315 54,615 7,943 Motor vehicles 11,804 11,893 1,730 Leasehold improvements 106,904 118,925 17,297 Property and equipment, cost 162,023 185,433 26,970 Less: Accumulated depreciation (56,521 ) (88,238 ) (12,834 ) Property and equipment, net 105,502 97,195 14,136 Depreciation expenses from continuing operations for the years ended December 31, 2016, 2017 and 2018 were approximately RMB12,860, RMB13,181 and RMB31,027 (US$4,513), respectively. Depreciation expenses from discontinued operations were approximately RMB 5, RMB 219 and RMB 42(US$26) for the years ended December 31, 2016, 2017 and 2018, respectively.

INTANGIBLE ASSETS, NET

INTANGIBLE ASSETS, NET	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLE ASSETS, NET	10. INTANGIBLE ASSETS, NET Intangible assets consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Cost: Computer software 24,639 25,726 3,742 License agreement 151,177 151,177 21,988 Internet domain name 2,907 2,907 423 Brand name 86,041 86,049 12,515 264,764 265,859 38,668 Accumulated amortization: Computer software (8,058 ) (13,585 ) (1,976 ) License agreement (7,693 ) (22,730 ) (3,306 ) Internet domain name (1,808 ) (2,034 ) (296 ) Brand name (3,944 ) (12,548 ) (1,825 ) (21,503 ) (50,897 ) (7,403 ) Intangible assets, net 243,261 214,962 31,265 Amortization expenses from continuing operations for the years ended December 31, 2016, 2017 and 2018 were approximately RMB5,658, RMB13,695 and RMB31,511 (US$4,583), respectively. Amortization expenses from discontinued operations were approximately RMB1,188, RMB12,407 and RMB1,399 (US$203) for the years ended December 31, 2016, 2017 and 2018, respectively. Annual estimated amortization expense for each of the five succeeding years is as follows: RMB US$ 2019 29,338 4,267 2020 27,242 3,962 2021 26,123 3,799 2022 25,294 3,679 2023 and thereafter 106,965 15,558 214,962 31,265

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	11. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Advance from end users* 35,888 44,006 6,400 Business tax and other taxes payable 4,118 4,276 623 Deferred government grant 2,807 3 - Professional fees payable 12,039 8,160 1,187 Promotional events payables 7,753 8,290 1,206 Decoration payables 5,328 3,096 450 Unpaid consideration for business combination** 54,550 - - Others 23,750 20,318 2,954 146,233 88,149 12,820 * Advance from end users represents payments received by the TMG in advance from the end users prior to the services to be provided. ** Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of USD19.4 122.0 which has been offset by the unpaid contingent consideration of RMB54.6

ACCUMULATED DEFICIT AND STATUTO

ACCUMULATED DEFICIT AND STATUTORY RESERVE	12 Months Ended
	Dec. 31, 2018
ACCUMULATED DEFICIT AND STATUTORY RESERVE [Abstract]
ACCUMULATED DEFICIT AND STATUTORY RESERVE	12. ACCUMULATED DEFICIT AND STATUTORY RESERVE The Company’s ability to pay dividends is primarily dependent on the Company receiving distributions of funds from its subsidiaries. Relevant PRC statutory laws and regulations permit payments of dividends by the Group’s PRC subsidiary only out of its retained earnings, if any, as determined in accordance with PRC accounting standards and regulations. The results of operations reflected in the financial statements prepared in accordance with U.S. GAAP differ from those reflected in the statutory financial statements of the Company’s PRC subsidiary. In accordance with the Regulations on Enterprises with Foreign Investment of China and its Articles of Association, the Company’s PRC subsidiary, E-Sun Sky Computer, being foreign-invested enterprises established in the PRC, is required to provide for certain statutory reserves, namely the general reserve fund, enterprise expansion fund and staff welfare and bonus fund, all of which are appropriated from net profit as reported in its PRC statutory accounts. E-Sun Sky Computer is required to allocate at least 10% of its after-tax profits to the general reserve fund until such fund has reached 50% of its registered capital. Appropriations to the enterprise expansion fund and staff welfare and bonus fund are at the discretion of the board of directors of the E-Sun Sky Computer. In accordance with the China Company Laws, the Company’s VIEs are PRC domestic companies (i.e. Hainan Menghuanxingchen, E-Sun Network, E-Sun Sky Network, Youlanguang Technology, Guangtiandi Technology, Tongfu Technology, Hainan Jingli, Hainan Panfeng, Hangzhou E-Sun Sky Network, Lhasa Yicai, Shenzhen Yicai, Baifengrun Technology and Shenzhen Kaisheng), and they must make appropriations from their after-tax profits as reported in their PRC statutory accounts to non-distributable reserve funds, namely statutory surplus fund, statutory public welfare fund and discretionary surplus fund. The VIEs are required to allocate at least 10% of their after-tax profits to the statutory surplus fund until such fund has reached 50% of their respective registered capital. Appropriation to discretionary surplus is made at the discretion of each individual VIE. The general reserve fund and statutory surplus fund are restricted to set-off against losses, expansion of production and operation and increasing registered capital of the respective company. The staff welfare and bonus fund and statutory public welfare fund are restricted to the capital expenditures for the collective welfare of employees. The reserves are not allowed to be transferred to the Company in terms of cash dividends, loans or advances, nor are they available for distribution except under liquidation. As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ PRC statutory reserved funds 30,882 30,882 4,491 Unreserved accumulated deficit (888,633 ) (1,340,306 ) (194,939 ) (857,751 ) (1,309,424 ) (190,448 ) Under PRC laws and regulations, there are restrictions on the Company’s PRC subsidiary and VIEs with respect to transferring certain of their net assets to the Company either in the form dividends, loans, or advances. Amounts restricted include paid-in capital, statutory reserve funds and retained earnings of the Company’s PRC subsidiary and VIEs, as determined pursuant to PRC generally accepted accounting principles, totaling approximately RMB113,588 (US$16,521) as of December 31, 2018. Therefore, in accordance with Rules 504 and 4.08(e)(3) of Regulation S-X, the condensed parent company only financial statements as of December 31, 2017 and 2018 and for each of the three years in the period ended December 31, 2018 are disclosed in Note 22. Furthermore, cash transfers from the Company’s PRC subsidiary to its subsidiaries outside of China are subject to PRC government control of currency conversion. Shortages in the availability of foreign currency may restrict the ability of the PRC subsidiary and consolidated affiliated entities to remit sufficient foreign currency to pay dividends or other payments to the Company, or otherwise satisfy their foreign currency denominated obligations.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	13. INCOME TAXES Cayman Islands Under the current laws of the Cayman Islands, the Company is not subject to tax on income or capital gains. In addition, upon payments of dividends by the Company to its shareholders, no Cayman Islands withholding tax will be imposed. USA 500.com USA is incorporated in the USA and does not conduct any substantive operations of its own. No provision for USA income tax has been made in the financial statements as 500.com USA had no assessable income for the years ended December 31, 2016, 2017 and 2018. British Virgin Islands Under the current laws of the British Virgin Islands, BVI is not subject to tax on income or capital gains. United Kingdom 500.com UK is incorporated in the UK and does not conduct any substantive operations of its own. No provision for UK income tax has been made in the financial statements as 500.com UK had no assessable income for the year ended December 31, 2016, 2017 and 2018. Curacao Multi Pay N.V. is incorporated in the Curacao, Under the current laws, profits tax in Curacao is generally assessed at the rate of 2% of taxable income. Malta Under the current laws, profits tax in Malta is generally assessed at the rate of 35% of taxable income. When dividend is paid or declared to the holding company, the paying entity is entitled to claim 6/7 of the profit tax paid as refund, which may effectively reduce income tax rate to 5%. Cyprus Round Spot Services Ltd is incorporated in Cyprus and does not conduct any substantive operations of its own. No provision for Cyprus income tax has been made in the financial statements as Round Spot Services Ltd had no assessable income for the year ended December 31, 2017 and 2018. Australia Multilotto Australia PTY Ltd is incorporated in Australia and does not conduct any substantive operations of its own. No provision for Australia income tax has been made in the financial statements as Multilotto Australia PTY Ltd had no assessable income for the year ended December 31, 2017 and 2018. Hong Kong 500wan HK is incorporated in Hong Kong, under the current laws, profits tax in Hong Kong is generally assessed at the rate of 16.5% of taxable income. As 500wan HK does not conduct any substantive operations of its own, no provision for Hong Kong income tax has been made in the financial statements as 500wan HK had no assessable income for the year ended December 31, 2016, 2017 and 2018. Japan 500.com Nihon Co., Ltd is incorporated in Japan in July 2017 and does not conduct any substantive operations of its own. No provision for Japan income tax has been made in the financial statements as 500.com Nihon Co., Ltd had no assessable income for the year ended December 31, 2017 and 2018. People’s Republic of China A new enterprise income tax law (the “EIT Law”) in the PRC was enacted and became effective on January 1, 2008. The EIT Law applies a uniform 25% 25% 25% in 2018 Lhasa Yicai was established in Tibet in 2014 and qualified as a “Western Area Encouraged Industry”. According to local government policy, qualified entities were granted a preferential tax rate of 15% from January 1, 2011 to December 31, 2020. Therefore, Lhasa Yicai is entitled to a preferential tax rate of 15% in 2016, 2017 and 2018. Additionally, Lhasa Yicai is also exempt from provincial allocated corporate income tax during January 1, 2015 to December 31, 2017 according to local tax law. Loss before income taxes from continuing operations consists of: 2016 2017 2018 2018 RMB RMB RMB US$ Cayman Islands (179,348 ) (162,884 ) (166,710 ) (24,245 ) British Virgin Islands (31 ) (3 ) - - USA (3,809 ) (4,703 ) (4,058 ) (590 ) Hong Kong (10,524 ) (10,922 ) (7,740 ) (1,126 ) Japan - (174 ) (1,592 ) (232 ) Malta - (4,321 ) (7,949 ) (1,156 ) Curacao - 7,449 (12,752 ) (1,855 ) Cyprus - (13 ) (8 ) (1 ) Australia - - - - PRC (14,104 ) (169,923 ) (290,530 ) (42,256 ) - (207,816 ) (345,494 ) (491,339 ) (71,461 ) The current and deferred components of the income tax expense appearing in the consolidated statements of loss are as follows: 2016 2017 2018 2018 RMB RMB RMB US$ Current tax (expense) benefit (3,553 ) 15,935 19,258 2,801 Deferred tax benefit (expense) 1,410 (1,910 ) 344 50 Income tax (expense) benefit (2,143 ) 14,025 19,602 2,851 The reconciliation of tax computed by applying the statutory income tax rate applicable to PRC operations to income tax (benefit) expense is as follows: 2016 2017 2018 2018 RMB RMB RMB US$ loss before income taxes (207,816 ) (345,494 ) (491,339 ) (71,461 ) Income tax computed at applicable tax rates (25%) (51,954 ) (86,374 ) (122,835 ) (17,866 ) Effect of different tax rates in different jurisdictions 4,743 693 979 142 Non-deductible expenses 54,588 92,960 127,291 18,514 Effect of tax rate changes (1,841 ) - - - Change in valuation allowance (5,144 ) - 1,637 238 Changes in interest and penalties on unrecognized tax position 3,105 5,098 - - Effect of EIT reversal for previous years 2,760 (19,704 ) (20,726 ) (3,014 ) Research and development super-deduction (2,947 ) (6,692 ) (5,942 ) (864 ) Others (1,167 ) (6 ) (6 ) (1 ) 2,143 (14,025 ) (19,602 ) (2,851 ) A reconciliation of the beginning and ending amount of unrecognized tax position is as follows: 2016 2017 2018 2018 RMB RMB RMB US$ Balance at beginning of year 42,983 38,457 24,298 3,534 Increase relating to current year tax positions 3,630 5,194 - - Decrease relating to prior year tax positions (3,204 ) (1,595 ) (7,420 ) (1,079 ) Decrease relating to expiration of applicable statute of limitations (4,952 ) (17,758 ) (14,745 ) (2,145 ) Balance at end of year 38,457 24,298 2,133 310 The Group recognizes interest accrued related to unrecognized tax position in taxation expenses. During the years ended December 31, 2016, 2017 and 2018, the Group recognized approximately RMB4,932, RMB5,098 and nil in interest on these unrecognized tax position and reversed approximately RMB1,827, RMB7,667 andRMB7,420(US$1,079) in interest. The Group had accrued approximately RMB9,989, RMB7,420 and nil for the interest on these uncertain taxes as of December 31, 2016, 2017 and 2018, respectively. In general, the PRC tax authorities have up to three to five years to conduct examinations of the Group’s tax filings. As of December 31, 2018, the PRC subsidiaries 2015 to 2018 tax returns remain open to examination. The components of deferred taxes are as follows: 2017 2018 2018 RMB RMB US$ Deferred tax assets Advertising expenditure deductible in future years 61,191 63,386 9,219 Deferred revenue 307 306 45 Deferred government grants 2,417 2,417 352 Loss from equity method investment 203 203 30 Bad debt provision 5,097 5,097 741 Accrued rental expense 817 817 119 Impairment loss 1,250 1,250 182 Net operating losses (“NOLs”) 34,700 109,850 15,977 Less: valuation allowance (105,982 ) (183,326 ) (26,665 ) Total deferred tax assets, net - - - Deferred tax liabilities Apps and other licenses arisen from business combination (6,754 ) (7,744 ) (1,126 ) Total deferred tax liabilities (6,754 ) (7,744 ) (1,126 ) The Group records a valuation allowance on its deferred tax assets that is sufficient to reduce the deferred tax assets to an amount that is more likely than not to be realized. Future reversal of the valuation allowance will be recognized either when the benefit is realized or when it has been determined that it is more likely than not that the benefit in future earnings will be realized. As of December 31, 2018, the Group had NOLs of approximately RMB346,623(US$50,414) from several of its VIEs, which can be carried forward to offset future net profit for income tax purposes. The NOLs as of December 31, 2018 will expire in years 2019 to 2023 if not utilized. The cumulative amount of the temporary differences in respect of investments in foreign subsidiaries is RMB255,333 and RMB113,588 (US$16,521) as of December 31, 2017 and 2018, respectively. Upon repatriation of the foreign subsidiaries and the VIEs’ earnings, in the form of dividends or otherwise, the Company would be subject to various PRC income taxes including withholding income tax. The related unrecognized deferred tax liabilities were approximately RMB25,533 and RMB11,359 (US$1,652) as of December 31, 2017 and 2018, respectively.

EMPLOYEE DEFINED CONTRIBUTION P

EMPLOYEE DEFINED CONTRIBUTION PLAN	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
EMPLOYEE DEFINED CONTRIBUTION PLAN	14. EMPLOYEE DEFINED CONTRIBUTION PLAN Full time employees of the Group in PRC participate in a government mandated defined contribution plan, pursuant to which certain pension benefits, medical care, employee housing fund and other welfare benefits are provided to employees. Chinese labor regulations require that the PRC subsidiary and VIEs of the Group make contributions to the government for these benefits based on certain percentages of the employees’ salaries. The Group has no legal obligation for the benefits beyond the contributions made. Such employee benefits, which were expensed as incurred, amounted to approximately RMB15,481, RMB12,707 and RMB12,682 (US$1,845) for the years ended December 31, 2016, 2017 and 2018, respectively.

SHARE-BASED PAYMENT

SHARE-BASED PAYMENT	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHARE-BASED PAYMENT	15. SHARE-BASED PAYMENT On March 28, 2011, the shareholders and board of directors of the Company approved the 2011 Share Incentive Plan (the “Plan”). The Plan provides for the grant of options, restricted shares and other share-based awards. These options were granted with exercise prices denominated in US$, which is the functional currency of the Company. The board of directors has authorized under the Plan the issuance of up to 12% of the Company’s issued and outstanding ordinary shares from time to time, on an as-exercised and fully diluted basis, upon exercise of awards granted under the Plan. The maximum term of any issued share option is ten years from the grant date. On April 8, 2011, the Company granted 13,864,000 share options to a director and employees with an exercise price of US$0.40 per share. For these awards, 5,506,600 options were vested upon the first anniversary of the grant date, 5,225,800 options were vested upon the second anniversary of the grant date, 1,565,800 options were vested upon the third anniversary of the grant date, and 1,565,800 options were vested upon the fourth anniversary of the grant date. On April 8, 2011, the Company granted 5,003,980 and 12,600,000 share options to another director and a consultant with an exercise price of US$0.40 per share, and all were vested on the grant date. On October 22, 2013, the Company granted 2,660,000 share options to employees with an exercise price of US$0.40 per share. For these awards, 600,000 options were vested on 180 days after the grant date, 1,620,000 options were vested upon the first anniversary of the grant date, 220,000 options were vested upon the second anniversary of the grant date, and 220,000 options were vested upon the third anniversary of the grant date. On June 19, 2014, the Company granted 2,000,000 options to directors and 32,561,800 options to employees, with an exercise price of US$3.232 per share (US$32.32 per ADS). For awards to directors, 666,690 options were vested on November 22, 2014, 666,690 options were vested on November 22, 2015, and 666,620 options were vested on November 22, 2016. For awards to employees, 5,437,820 options were vested upon the first anniversary of the grant date, 10,843,080 options were vested upon the second anniversary of the grant date. On June 19, 2017, the last vest date of the remaining unexercised options was extended by our board of directors from June 19, 2017 to June 19, 2018. On June 19, 2018, the last vest date of the remaining unexercised options was extended by our board of directors from June 19, 2018 to June 19, 2019. On November 22, 2018, the last vest date of the remaining unexercised options was extended by our board of directors from November 22, 2018 to November 22, 2019. On June 29, 2015, the Company granted 200,000 share options to a director with an exercise price of US$2.55 per share. For these awards, 66,670 options were vested upon the first anniversary of the grant date, 66,670 options were vested upon the second anniversary of the grant date, and 66,660 options were vested upon the third anniversary of the grant date. On June 29, 2018, the last vest date of the remaining unexercised options was extended by our board of directors from June 29, 2018 to June 29, 2019. On January 5, 2016, the Company granted 2,500,000 share options to employees with an exercise price of US$2.00 per share. For these awards, 750,000 options were vested on June 19, 2016, 750,000 options were vested on December 15, 2016, and 1,000,000 On January 6, 2016, the Company granted 600,000 share options to a director with an exercise price of US$1.851 per share, which were vested on November 21, 2016. On November 22, 2018, the last vest date of the remaining unexercised options was extended by our board of directors from November 22, 2018 to November 22, 2019. On January 16, 2016, the Company granted 15,900,000 share options to employees with an exercise price of US$1.743 per share, among which, 10,000,000 share options were gave up by employees after the grant, for the remaining awards, 985,300 options were vested on January 16, 2017, 1,964,700 options were vested on January 16, 2018, and 2,950,000 options were vested on January 16, 2019. All of the vested options were gave up by employees in January, 2019. On December 16, 2016, the Company granted 600,000 share options to directors with an exercise price of US$1.35 per share, which were vested on November 21, 2017. On August 15, 2017, the Company granted 12,230,280 restricted share units ("RSUs") to employees. For these rewards, the first 4,035,994 options were vested on March 1, 2018, the second 4,035,994 options were vested on December 31, 2018, and the third 4,158,292 options will be vested on December 1, 2019. On April 30, 2018, the vest dates of the second and third options were changed by our board of directors from December 31, 2018 to June 1, 2018 and from December 1, 2019 to June 1, 2019, respectively. On November 22, 2017, the Company granted 350,000 RSUs to directors, which were vested on November 21, 2018. On June 28, 2018, the Company granted 5,000,000 RSUs to employees. For these rewards, 2,000,000 options were vested on September 1, 2018, and 3,000,000 options were vested on March 1, 2019. A summary of share option and restricted shares activity and related information for the year ended December 31, 2018 are as follows: Share options granted to employees and directors Number of options Weighted average exercise price Weighted average grant date fair value per share Weighted average remaining contractual year Aggregated intrinsic value US$ US$ (Years) US$’000 Outstanding, January 1, 2018 41,987,560 1.04 1.18 1.59 3,986 Granted - - - - - Forfeited - - - Exercised (6,513,460 ) 0.92 1.28 Outstanding, December 31, 2018 35,474,100 1.07 1.17 0.94 2,078 Vested and expected to vest at December 31, 2018 35,248,669 1.07 1.17 0.87 1,953 Exercisable at December 31, 2018 32,524,100 1.00 1.19 0.84 2,078 Restricted shares granted to employees and directors Number of options Weighted average grant date fair value per share Weighted average remaining contractual year Aggregated intrinsic value US$ (Years) US$’000 Outstanding, January 1, 2018 12,580,280 0.96 9.63 12,719 Granted 5,000,000 1.41 9.49 3,790 Forfeited - - Exercised (10,503,520 ) 1.05 Outstanding, December 31, 2018 7,076,760 1.15 8.99 5,364 Vested and expected to vest at December 31, 2018 7,076,760 1.15 8.99 5,364 Exercisable at December 31, 2018 - The aggregate intrinsic value in the table above represents the difference between the fair value of Company’s common share as of December 31, 2018 and the exercise price. Total intrinsic value of options granted to employees and directors exercised for the years ended December 31, 2016, 2017 and 2018 were RMB11,051, RMB479 and RMB2,284 (US$332), respectively. No share options granted to the consultants were exercised during the years ended December 31, 2018. Total intrinsic value of restricted shares granted to employees and directors exercised for the year ended December 31, 2018 was RMB7,962(US$1,158). On June 8, 2012 (the “First Modification Date”), the Company modified the exercise price of both vested and unvested 13,740,000 options that were previously granted to 88 employees, from US$0.4 to US$0.2. The modification was intended to provide additional incentives for these employees. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$670, which was measured as the excess of the fair value of the modified award of US$3,460 over the fair value of the original award of US$2,790 at the First Modification Date. The total compensation cost measured at the First Modification Date was US$2,214, representing the portion of the grant-date fair value of the original award for which the requisite service is expected to be rendered (or has already been rendered) at the First Modification Date of US$1,544 and the incremental compensation cost resulting from the modification of US$ 670 The incremental compensation cost of US$178 for vested options was recognized immediately at the First Modification Date, while the compensation cost of US$2,036 for unvested options is being amortized on an accelerated basis over the remaining vesting term of the original award. On March 19, 2015 (the “Second Modification Date”), the Company modified the exercise price of the share options granted on June 19, 2014 from US$3.232 (US$32.32 per ADS) to US$1.00 (US$10.00 per ADS) . The modification was intended to provide additional incentives for these employees. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$11,197, which was measured as the excess of the fair value of the modified award of US$15,390 over the fair value of the original award of US$4,193 at the Second Modification Date. The total compensation cost measured at the Second Modification Date was US$39,829, representing the portion of the grant-date fair value of the original award for which the requisite service is expected to be rendered (or has already been rendered) at the Second Modification Date of US$28,632 and the incremental compensation cost resulting from the modification of US$ 11,197 The incremental compensation cost of US$213 for vested options was recognized immediately at the Second Modification Date, while the compensation cost of US$39,616 for unvested options is being amortized on an accelerated basis over the remaining vesting term of the original award. On June 19, 2017 (the “Third Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on June 19, 2014 from June 19, 2017 to June 19, 2018. The modification was intended to provide additional incentives for these employees. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$55, which was measured as the one extending year of the fair value of the modified award of 2,828,620 shares. The incremental compensation cost of US$55 for unexercised options is being amortized on an accelerated basis over the extending term of the original award from June 19, 2017 to June 19, 2018. On June 19, 2018 (the “Fourth Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on June 19, 2014 from June 19, 2018 to June 19, 2019. The modification was intended to provide additional incentives for these employees. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$4,764, which was measured as the one extending year of the fair value of the modified award of 7,594,240 shares. On May 1, 2018 (the “Fifth Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on June 19, 2014 from November 22, 2018 to November 22, 2019. The modification was intended to provide additional incentives for the directors. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$ 32 On May 1, 2018 (the “Sixth Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on June 29, 2015 from June 29, 2018 to June 29, 2019. The modification was intended to provide additional incentives for the directors. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$6, which was measured as the one extending year of the fair value of the modified award of 66,600 shares. On May 1, 2018 (the “Seventh Modification Date”), the Company extended the maturity date of the remaining unexercised share options granted on January 6, 2016 from November 22, 2018 to November 22, 2019. The modification was intended to provide additional incentives for the directors. In accordance with ASC 718, the effects of a modification resulted in incremental compensation cost of US$18, which was measured as the one extending year of the fair value of the modified award of 600,000 shares. As of December 31, 2018, there was RMB15,986 (US$2,325) of unvested share-based compensation costs related to equity awards granted to employees and directors that is expected to be recognized over a weighted-average vesting period of 0.47 years. To the extent the actual forfeiture rate is different from the original estimate, actual share-based compensation costs related to these awards may be different from the expectation. As of December 31, 2018, there was RMB13,490 (US$1,962) of unvested restricted share compensation costs related to equity awards granted to employees that is expected to be recognized over a weighted-average vesting period of 0.31 years. To the extent the actual forfeiture rate is different from the original estimate, actual restricted share compensation costs related to these awards may be different from the expectation. As the share options granted to the consultants were fully vested at the grant date, the related compensation expenses were fully recognized in the consolidated statement of comprehensive income (loss) at the grant date. The fair value of share options was determined using the binomial option valuation model, with the assistance from an independent third-party appraiser. The binomial model requires the input of highly subjective assumptions, including the expected share price volatility and the suboptimal early exercise factor. For expected volatilities, the Company has made reference to historical volatilities of several comparable companies. The sub-optimal early exercise factor was estimated based on the vesting and contractual terms of the awards and management’s expectation of exercise behavior of the grantees. The risk-free rate for periods within the contractual life of the options is based on market yield of U.S. Treasury Bond in effect at the time of grant. The assumptions used to estimate the fair value of the share options granted are as follows: For the years ended December 31 2016 2017 2018 Expected volatility 70.80%~77.52 % 54.83 % 54.27%~60.15 % Risk-free interest rate 1.13%~1.62 % 1.20 % 2.26%~2.62 % Dividend yield 0.00 % 0.00 % 0.00 % Forfeiture rate 0.00 % 0.00 % 0.00 % Suboptimal early exercise factor 2.2~2.8 2.2 2.2~2.8 The fair value of restricted shares was determined using the market price of the ordinary shares of the Company on the grant date. The total fair value of the vested equity share options granted to the employees and directors during the years ended December 31, 2016 was RMB127,333, there were no vested equity share options granted to the employees and directors during the years ended December 31, 2017 and 2018. The total fair value of the restricted shares granted to the employees and directors during the years ended December 31, 2016, 2017 and 2018 were nil, RMB78,902 and RMB48,575 (US$7,065), respectively. The exercise price of share options granted to the employees and directors equaled the market price of the ordinary shares on the grant date. No share options were granted during the year ended December 31, 2017 and 2018. The weighted-average grant-date fair value per share granted to employees and directors during the year ended December 31, 2016 was US$0.89. The Company granted restricted shares to employees and directors during the year ended December 31, 2017 and 2018 with free exercise price. The weighted-average grant-date fair value per restricted shares granted to employees and directors during the year ended December 31, 2017 and 2018 were US$0.96 and US$1.41, respectively. Total share-based compensation expenses relating to options and restricted shares granted to employees and directors for the years ended December 31, 2016, 2017 and 2018 are included in: For the year ended December 31, 2016 Employees Directors Total Total RMB RMB RMB US$ Cost of services 2,993 - 2,993 431 Sales and marketing 13,966 - 13,966 2,012 General and administrative 114,244 7,114 121,358 17,479 Service development expenses 25,024 - 25,024 3,604 156,227 7,114 163,341 23,526 For the year ended December 31, 2017 Employees Directors Total Total RMB RMB RMB US$ Cost of services 1,343 - 1,343 206 Sales and marketing 9,228 - 9,228 1,418 General and administrative 61,113 3,089 64,202 9,868 Service development expenses 16,370 - 16,370 2,516 88,054 3,089 91,143 14,008 For the year ended December 31, 2018 Employees Directors Total Total RMB RMB RMB US$ Cost of services 351 - 351 51 Sales and marketing 11,361 - 11,361 1,652 General and administrative 74,227 2,346 76,573 11,137 Service development expenses 20,343 - 20,343 2,959 106,282 2,346 108,628 15,799

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	16. COMMITMENTS AND CONTINGENCIES Operating lease commitments RMB US$ 2019 25,661 3,780 2020 26,892 3,961 2021 21,952 3,234 2022 16,499 2,430 91,004 13,405 Payments under operating leases are expensed on a straight-line basis over the periods of their respective leases. The Group’s lease arrangements have no renewal options, rent escalation clauses, restrictions or contingent rents and are all conducted with third parties. For the years ended December 31, 2016, 2017 and 2018, total rental expenses for all operating leases amounted to approximately RMB11,293, RMB28,695 and RMB35,144 (US$5,111), respectively. Uncertain Income tax position As of December 31, 2017 and 2018, the Group has recognized approximately RMB24,298 and RMB2,133 (US$310), respectively, as an accrual for unrecognized tax position, including related interest and penalties. The final outcome of the tax uncertainty is dependent upon various matters including tax examinations, interpretation of tax laws or expiration of statute of limitation. However, due to the uncertainties associated with the status of examinations, including the protocols of finalizing audits by the relevant tax authorities, there is a high degree of uncertainty regarding the future cash outflows associated with these tax uncertainties. As of December 31, 2017, and 2018, the Group classified the accrual of RMB24,298 and RMB2,133 (US$310), respectively, as a long-term payable. Variable interest entity structure In the opinion of management, (i) the ownership structure of the Company and its VIEs are in compliance with existing PRC laws and regulations; (ii) the contractual arrangements with the VIEs and their shareholders are valid and binding, and will not result in any violation of PRC laws or regulations currently in effect; and (iii) the Group’s business operations are in compliance with existing PRC laws and regulations in all material respects. However, there are substantial uncertainties regarding the interpretation and application of current and future PRC laws and regulations. Accordingly, the Company cannot be assured that PRC regulatory authorities will not ultimately take a contrary view to its opinion. If the current ownership structure of the Group and its contractual arrangements with VIEs are found to be in violation of any existing or future PRC laws and regulations, the Group may be required to restructure its ownership structure and operations in the PRC to comply with the changing and new PRC laws and regulations. In the opinion of management, the likelihood of loss in respect of the Group’s current ownership structure or the contractual arrangements with VIEs is remote based on current facts and circumstances. Contractual Arrangements among the Company and the VIEs Under applicable PRC tax laws and regulations, arrangements and transactions among related parties may be subject to audit or scrutiny by the PRC tax authorities within ten years after the taxable year when the arrangements or transactions are conducted. The Company could face material and adverse tax consequences if the PRC tax authorities were to determine that the Contractual Arrangements among the Company and the respective VIEs were not entered into on an arm’s-length basis and therefore constituted unfavorable transfer pricing arrangements. Unfavorable transfer pricing arrangements could, among other things, result in an upward adjustment on taxation. In addition, the PRC tax authorities may impose interest on late payments on the Company and the respective VIEs for the adjusted but unpaid taxes. In the opinion of management, the likelihood of such an upward adjustment on taxation and related interest is remote based on current facts and circumstances. Guarantees The Group accounts for guarantees in accordance with ASC topic 460 (“ASC 460”), Guarantees . Accordingly, the Group evaluates its guarantees to determine whether (a) the guarantee is specifically excluded from the scope of ASC 460, (b) the guarantee is subject to ASC 460 disclosure requirements only, but not subject to the initial recognition and measurement provisions, or (c) the guarantee is required to be recorded in the financial statements at fair value. The memorandum and articles of association of the Company require that the Company indemnify its officers and directors, as well as those who act as directors and officers of other entities at the Company’s request, against expenses, judgments, fines, settlements and other amounts actually and reasonably incurred in connection with any proceedings arising out of their services to the Company. The indemnification obligations are more fully described in the memorandum and articles of association. The Company purchases standard directors and officers insurance to cover claims or a portion of the claims made against its directors and officers. Since a maximum obligation is not explicitly stated in the Company’s memorandum and articles of association and will depend on the facts and circumstances that arise out of any future claims, the overall maximum amount of the obligations cannot be reasonably estimated. Historically, the Group has not been required to make payments related to these obligations, and the fair value for these obligations is zero as of December 31, 2017 and 2018. Indemnity Cost On September 12, 2016, the Group entered into an agreement, approved by the U.S. District Court to settle outstanding legal proceedings relating to a stockholder class action lawsuit during the period between November 22, 2013 and February 25, 2015 for USD 2,500, with USD1,500 paid by the Group and USD1,000 covered by the insurance company. As of December 31, 2016, the amount was fully funded, and the stockholder class action lawsuit has since been settled. There was no any other related lawsuit or indemnity cost occurred in 2017 and 2018.

LOSSES PER SHARE

LOSSES PER SHARE	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	17. LOSSES PER SHARE Basic and diluted losses per share for each of the years presented is calculated as follows: For the years ended 2016 2017 2018 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Losses per share from continuing operations—basic: Numerator: Allocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic (166,352 ) (36,974 ) (265,563 ) (59,172 ) (380,701 ) (55,371 ) (82,216 ) (11,958 ) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Denominator used for losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Losses per share from continuing operations — basic (0.49 ) (0.49 ) (0.80 ) (0.80 ) (1.13 ) (0.164 ) (1.13 ) (0.164 ) Losses per share from continuing operations—diluted: Numerator: Allocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted (166,352 ) (36,974 ) (265,563 ) (59,172 ) (380,701 ) (55,371 ) (82,216 ) (11,958 ) Reallocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares (36,974 ) - (59,172 ) - (82,216 ) (11,958 ) - - Net loss from continuing operations attributable to ordinary shareholders (203,326 ) (36,974 ) (324,735 ) (59,172 ) (462,917 ) (67,329 ) (82,216 ) (11,958 ) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 75,442,810 - 74,400,299 - 74,400,299 74,400,299 - - Share options — - - - - - - - Denominator used for losses per share 414,872,756 75,442,810 408,310,122 74,400,299 418,911,292 418,911,292 74,400,299 74,400,299 Losses per share from continuing operations—diluted (0.49 ) (0.49 ) (0.80 ) (0.80 ) (1.13 ) (0.164 ) (1.13 ) (0.164 ) Losses from continuing operations per ADS: Denominator used for losses per ADS - basic 33,942,995 - 33,390,982 - 34,451,099 34,451,099 - - Denominator used for losses per ADS - diluted 41,487,276 - 40,831,012 - 41,891,129 41,891,129 - - Losses from continuing operations per ADS – basic (4.90 ) - (7.95 ) - (11.28 ) (1.64 ) - - Losses from continuing operations per ADS – diluted (4.90 ) - (7.95 ) - (11.28 ) (1.64 ) - - For the years ended 2016 2017 2018 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Income per share from discontinued operations—basic: Numerator: Allocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic 295 66 6,245 1,391 9,247 1,345 1,997 290 Denominator: Weighted average number of ordinary shares outstanding used in calculating basic income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Denominator used for income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Income per share from discontinued operations — basic 0.001 0.001 0.02 0.02 0.03 0.004 0.03 0.004 Income per share from discontinued operations—diluted: Numerator: Allocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share— diluted 295 66 6,245 1,391 9,247 1,345 1,997 290 Reallocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares 66 - 1,391 - 1,997 290 - - Net income from discontinued operations attributable to ordinary shareholders 361 66 7,636 1,391 11,244 1,635 1,997 290 Denominator: Weighted average number of ordinary shares outstanding used in calculating basic income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 75,442,810 - 74,400,299 - 74,400,299 74,400,299 - - Share options - - - - - - - - Denominator used for income per share 414,872,756 75,442,810 408,310,122 74,400,299 418,911,292 418,911,292 74,400,299 74,400,299 Losses per share from discontinued operations—diluted 0.001 0.001 0.02 0.02 0.03 0.004 0.03 0.004 Income from discontinued operations per ADS: Denominator used for income per ADS - basic 33,942,995 - 33,390,982 - 34,451,099 34,451,099 - - Denominator used for income per ADS - diluted 41,487,276 - 40,831,012 - 41,891,129 41,891,129 - - Income from discontinued operations per ADS – basic 0.01 - 0.19 - 0.27 0.04 - - Income from discontinued operations per ADS – diluted 0.01 - 0.19 - 0.27 0.04 - -

EQUITY TRANSACTIONS

EQUITY TRANSACTIONS	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
EQUITY TRANSACTIONS	18. EQUITY TRANSACTIONS Upon completion of the Company’s IPO in November 2013, the Company’s ordinary shares were converted into 66,539,000 Class A ordinary shares and 231,428,220 Class B ordinary shares. The conversion of ordinary shares into Class A and Class B ordinary shares has been retroactively reflected in the financial statements as if the conversion had occurred from the earliest period presented. The Memorandum and Articles of Association were amended and restated such that the authorized share capital consisted of 1,000,000,000 ordinary shares at a par value of US$0.00005 per share, of which 700,000,000 shares were designated as Class A ordinary shares, and 300,000,000 as Class B ordinary shares. The rights of the holders of Class A and Class B ordinary shares are identical, except with respect to voting and conversion rights. Each share of Class A ordinary shares is entitled to one vote per share and is not convertible into Class B ordinary shares under any circumstances. Each share of Class B ordinary shares is entitled to ten votes per share and is convertible into one Class A ordinary share at any time by the holder thereof. Additionally, the Company issued 19,230,769 and 11,538,462 Class B ordinary shares as a result of the conversion of the convertible note and the concurrent private placement for an aggregate consideration of US$15,000, respectively. As of December 31, 2013, 66,539,000 and 262,197,451 Class A and Class B ordinary shares were issued and outstanding, respectively. In 2014, 22,742,660 share options were exercised at the exercise prices of US$0.2 to US$0.4 per share, resulting in the issuance of 22,742,660 Class A ordinary shares at US$0.00005 each for an aggregate consideration of US$8,107. As of December 31, 2014, 254,844,582 and 96,634,529 Class A and Class B ordinary shares were issued and outstanding, respectively. In 2015, 5,274,480 share options were exercised at the exercise prices of US$0.2 to US$1.0 per share, resulting in the issuance of 5,274,480 Class A ordinary shares at US$0.00005 each for an aggregate consideration of US$2,960. Additionally, the Company issued 63,500,500 Class A ordinary shares to a shareholder for an aggregate consideration of US$123,391. The Company repurchased 1,220,000 Class A ordinary shares for a consideration of US$1,434. As of December 31, 2015, 334,034,932 and 84,999,159 Class A and Class B ordinary shares were issued and outstanding, respectively. In 2016, 2,276,320 share options were exercised at the exercise prices of US$0.2 to US$1.0 per share, resulting in the issuance of 2,276,320 Class A ordinary shares at US$0.00005 each for an aggregate consideration of US$2,032. The Company repurchased 11,415,320 Class A ordinary shares for a consideration of US$17,240. As of December 31, 2016, 335,494,792 and 74,400,299 Class A and Class B ordinary shares were issued and outstanding, respectively. In 2017, 894,760 share options were exercised at the exercise prices of US$0.2 to US$1.0 per share, resulting in the issuance of 894,760 Class A ordinary shares at US$0.00005 each for an aggregate consideration of US$831. The Company repurchased 2,602,000 Class A ordinary shares for a consideration of US$2,999. As of December 31, 2017, 333,787,552 and 74,400,299 Class A and Class B ordinary shares were issued and outstanding, respectively. In 2018, 6,513,460 share options were exercised at the exercise prices of US$0.2 to US$1.0 per share, resulting in the issuance of 6,513,460 Class A ordinary shares at US$0.00005 each for an aggregate consideration of US$6,014. And 10,503,520 restricted shares were vested and exercised without exercise prices. As of December 31, 2018, 350,804,532 and 74,400,299 Class A and Class B ordinary shares were issued and outstanding, respectively.

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT	19. FAIR VALUE MEASUREMENT In accordance with ASC 820-10, the Group measures available-for-sale investments, contingent consideration payable at fair value on a recurring basis. The fair value of the available-for-sale investments are measured based on the market price in an active market. The Group measures certain financial assets, including cost method investments and equity method investments at fair value on a nonrecurring basis only if an impairment charge were to be recognized. The Group’s non-financial assets, such as intangible assets and fixed assets, would be measured at fair value only if they were determined to be impaired on an other-than-temporary basis. Assets measured or disclosed at fair value are summarized below: Fair value measurement at December 31, 2017 Total fair value at December 31, 2017 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 289,304 44,465 - 289,304 - - - Adjustable-rate investments 89,604 13,772 - 89,604 - - - Total 378,908 58,237 - 378,908 - - - Fair value measurement Recurring Short-term investments Investment in targeted asset management plan with fixed rate (Note 6) 100,000 15,370 - 100,000 - - - Available-for-sale investments - - - - - 733 113 Non-recurring Long-term investments - - - - - 28,781 4,424 Total assets measured at fair value 100,000 15,370 - 100,000 - 29,514 4,537 Fair value measurement Recurring Contingent consideration payable 54,550 8,384 - - 54,550 2,384 366 Total liabilities measured at fair value 54,550 8,384 - - 54,550 2,384 366 Assets and liabilities measured or disclosed at fair value are summarized below: Fair value measurement at December 31, 2018 Total fair value at December 31, 2018 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 246,560 35,861 - 246,560 - - - Adjustable-rate investments 27,580 4,011 - 27,580 - - - Total 274,140 39,872 - 274,140 - - - Fair value measurement Recurring Short-term investments Investment in targeted asset management plan with fixed rate (Note 6) 100,000 14,544 - 100,000 - - - Available-for-sale investments - - - - - - - Non-recurring Long-term investments 98,391 14,310 98,391 - - 149,896 21,801 Total assets measured at fair value 198,391 28,854 98,391 100,000 - 149,896 21,801 Fair value measurement Recurring Contingent consideration payable - - - - - - - Total liabilities measured at fair value - - - - - - - There were no transfers of fair value measurements into or out of Level 3 for the years ended December 31, 2016, 2017 and 2018. The Group has measured the contingent consideration payable at fair value on a recurring basis using significant unobservable inputs (Level 3) as of the years ended December 31, 2017. The significant unobservable inputs used in the fair value measurement and the corresponding impacts to the fair values are presented below: Valuation techniques Unobservable inputs Estimation as of December 31, 2017 Change in unobservable inputs Change in fair value Contingent consideration payable Monte Carlo simulation technique Spot value of net income 31,698 Increase / (decrease) Increase / (decrease) Volatility of net income 10.00 % Increase / (decrease) (Decrease) / increase Expected annual growth rate of net income 0.00 % Increase / (decrease) Increase / (decrease) Discount factor 0.95 Increase / (decrease) (Decrease) / increase The following table presents a reconciliation of liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2018: Contingent consideration payable RMB Balance as of December 31, 2015 - Recognized during the year 52,240 Balance as of December 31, 2016 52,240 Recognized during the year 2,310 Balance as of December 31, 2017 54,550 Settled during the year (54,550 ) Balance as of December 31, 2018 - Balance as of December 31, 2018 in US$ -

SEGMENT REPORTING

SEGMENT REPORTING	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
SEGMENT REPORTING	20. SEGMENT REPORTING The Group engages primarily in the online lottery purchase services, online mobile gaming and information services in the PRC. After acquiring the business of online lottery betting and online casino platforms generated from the Multi Group, the Group distinguishes revenues, costs and expenses between different geographic operating segment in its internal reporting, and reports costs and expenses by nature in different geographic operating segments. In accordance with ASC topic 280, “ Segment Reporting” , the Group’s chief operating decision maker has been identified as the Board of Directors and the chief executive officer, who makes resource allocation decisions and assesses performance based on the Group’s geographic location operating results. As a result, the Group has two reportable segments, including the PRC and Europe. The following table presents summary information by segment for the years ended December 31, 2016, 2017 and 2018, respectively. For the year ended December 31, 2016 PRC Europe Total RMB RMB RMB Net Revenues 5,259 - 5,259 Depreciation and Amortization 18,518 - 18,518 Operating loss from continuing operations 368,183 - 368,183 Interest income 23,859 - 23,859 Income tax expense 2,143 - 2,143 Segment net loss from continuing operations 209,959 - 209,959 Segment assets 2,063,328 - 2,063,328 For the year ended December 31, 2017 PRC Europe Total RMB RMB RMB Net Revenues 22,488 49,370 71,858 Depreciation and Amortization 12,814 14,062 26,876 Operating (loss) income from continuing operations (341,286 ) 2,755 (338,531 ) Interest income 20,032 - 20,032 Income tax (benefit) expense (14,181 ) 156 (14,025 ) Segment net (loss) income from continuing operations (334,428 ) 2,959 (331,469 ) Segment assets 1,696,024 58,535 1,754,559 For the year ended December 31, 2018 PRC Europe Total Total RMB RMB RMB US$ Net Revenues 20,578 105,511 126,089 18,339 Depreciation and Amortization 31,027 31,511 62,538 9,096 Operating loss from continuing operations 327,850 16,638 344,488 50,103 Interest income 15,308 - 15,308 2,226 Income tax (benefit) expense (21,014 ) 1,412 (19,602 ) (2,851 ) Segment net loss from continuing operations 453,687 18,050 471,737 68,610 Segment assets 1,204,057 42,527 1,246,584 181,307

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	21. SUBSEQUENT EVENTS Discontinue to provide Sports Information Services from "Cai Xun Hao” On March 25, 2019, the management of the Company decided to discontinue the Sports Information Services provided by “Cai Xun Hao” . Revenue generated from “Cai Xun Hao” was nil, RMB2,332 and RMB16,036 (US$2,332) for the year ended December 31, 2016, 2017 and 2018, respectively, which accounted for nil, 3.2%, and 12.7% of total net revenues for the years ended December 31, 2016, 2017 and 2018, respectively. The discontinuation of the Sports Information Services provided by “Cai Xun Hao” has no major effect on the Group’s operations and financial results. Restricted stock units incentive plan On January 2, 2019, the Compensation Committee of the Board of Directors of the Company reached an agreement to issue the number of Class A ordinary shares of 7,553,980 to grant to the employees of the Company, which will be vested in January 1, 2020. 7% Redeemable Noncontrolling Interest in Arbitration related to TMG In connection with our acquisition of a 93% equity interest in TMG in 2017, we entered into a shareholders’ agreement with Helmet Limited, or Helmet, which owns the remaining 7% equity interest (post-acquisition) in TMG. Pursuant to this shareholders’ agreement, if Thomas Biro resigns from his employment with TMG, or his employment is terminated for whatever reason, Helmet has the right to request that we, on one occasion, purchase all or some of the TMG shares then held by Helmet. This right is exercisable within one year from the aforementioned resignation. However, such right is not exercisable if Mr. Biro resigns before December 31, 2018. When the notice to exercise such right is delivered, we and Helmet shall, within 30 business days, establish a fair market value as the purchase price for the TMG shares subject to sale. If both parties fail to reach an agreement during such period, the fair market value of those TMG shares will be decided by an independent valuation expert appointed by both parties. If the parties are not able to decide on an independent valuation expert, such expert shall be appointed in accordance with the dispute resolution provisions under the shareholders’ agreement. In early 2019, we received a redemption notice from Helmet, requesting us to purchase the 7% equity interest in TMG held by Helmet at a redemption price of EUR3,745. We and Helmet failed to reach an agreement as to the purchase price for the TMG shares within 30 business days of the notice. Helmet has referred the dispute to arbitration by a local court in Malta, and we have engaged attorneys to represent us in the arbitration. After receiving of the redemption notice, we adjusted the carrying amount of the 7% redeemable noncontrolling interest to equal to the redemption amount of EUR3,745 as of December 31, 2018. The worst-case scenario is that we ultimately may be required to purchase the TMG shares held by Helmet at the redemption price of EUR3,745, other than this adjustment as reflected and disclosed in our consolidated financial statements for 2018, we do not expect to incur other liabilities in connection with the aforementioned arbitration.

CONDENSED FINANCIAL INFORMATION

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY	22. CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY Under PRC laws and regulations, the Company’s PRC subsidiary E-Sun Sky Computer and VIEs are restricted in their ability to transfer certain of its net assets to the Company in the form of dividend payments, loans and/or advances. The amounts restricted include paid up capital, retained earnings and statutory reserves, as determined pursuant to PRC generally accepted accounting principles, totaling RMB113,588 (US$16,521) as of December 31, 2018. The following is the condensed financial information of the Company on a parent company only basis. Condensed balance sheets As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 1,304 12,338 1,795 Time deposits - - - Other current assets 20,257 7,348 1,069 Amounts due from intergroup companies 400,659 506,418 73,656 Total current assets 422,220 526,104 76,520 Non-current assets: Investment in subsidiaries and VIEs 1,060,273 605,167 88,018 Property and equipment, net 241 167 24 Total non-current assets 1,060,514 605,334 88,042 TOTAL ASSETS 1,482,734 1,131,438 164,562 As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accrued payroll and welfare payable 544 369 54 Accrued expenses and other liabilities 68,015 9,452 1,375 Amounts due to intergroup companies 4,401 5,012 729 Total current liabilities 72,960 14,833 2,158 TOTAL LIABILITIES 72,960 14,833 2,158 Shareholders’ equity: Class A Ordinary shares, par value US$0.00005 per share, 700,000,000 shares authorized as of December 31, 2016 and 2017; 333,787,552 and 350,804,532 shares issued and outstanding as of December 31, 2017 and 2018, respectively 115 121 18 Class B Ordinary shares, par value US$0.00005 per share; 300,000,000 shares authorized as of December 31, 2017 and 2018; 74,400,299 and 74,400,299 shares issued and outstanding as of December 31,2017 and 2018, respectively 28 28 4 Additional paid-in capital 2,295,111 2,431,924 353,709 Treasury shares (143,780 ) (143,780 ) (20,912 ) Accumulated other comprehensive income 116,051 137,736 20,033 Accumulated deficit and statutory reserve (857,751 ) (1,309,424 ) (190,448 ) Total shareholder’s equity 1,409,774 1,116,605 162,404 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY 1,482,734 1,131,438 164,562 Condensed statements of comprehensive income (loss) For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net Revenues - - - - Operating expenses: Sales and marketing (402 ) (497 ) (1,784 ) (259 ) General and administrative (15,934 ) (68,260 ) (177,455 ) (25,810 ) Total operating expenses (16,336 ) (68,757 ) (179,239 ) (26,069 ) Indemnity cost (9,979 ) - - - Other operating income 39 - - - Operating loss (26,276 ) (68,757 ) (179,239 ) (26,069 ) Interest income 10,269 4,818 2 - Equity in (loss) profits of subsidiaries and VIEs (186,958 ) (253,160 ) (272,436 ) (39,623 ) Loss before income tax (202,965 ) (317,099 ) (451,673 ) (65,692 ) Income tax benefit - - - - Net loss (202,965 ) (317,099 ) (451,673 ) (65,692 ) Other comprehensive income Foreign currency translation gain (loss) 82,347 (56,196 ) 21,685 3,155 Change in fair value of AFS 754 (733 ) - - Comprehensive loss (119,864 ) (374,028 ) (429,988 ) (62,537 ) Condensed statements of cash flows For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net cash provided (used in) by operating activities 25,679 (270,965 ) (91,547 ) (13,315 ) Net cash provided (used in) by investing activities 413,401 3,065 (56,941 ) (8,282 ) Net cash (used in) provided by financing activities (118,484 ) (11,945 ) 159,456 23,192 Effect of exchange rate changes on cash and cash equivalents 481 (60,522 ) 66 10 Net increase (decrease) in cash and cash equivalents 321,077 (340,367 ) 11,034 1,605 Cash and cash equivalents at beginning of the year 20,594 341,671 1,304 190 Cash and cash equivalents at end of the year 341,671 1,304 12,338 1,795 Basis of presentation Condensed financial information is used for the presentation of the Company, or the parent company. The condensed financial information of the parent company has been prepared using the same accounting policies as set out in the Group’s consolidated financial statements except that the parent company used the equity method to account for its investment in its subsidiaries and VIEs. The parent company records its investment in its subsidiaries and VIEs under the equity method of accounting as prescribed in ASC 323, “ Investments-Equity Method and Joint Ventures”. Such investments are presented on the condensed balance sheets as “Investment in subsidiaries and VIEs” and their respective profit or loss as “Equity in profits (losses) of subsidiaries and VIEs” on the condensed statements of comprehensive income (loss). Equity method accounting ceases when the carrying amount of the investment, including any additional financial support, in a subsidiary and VIEs is reduced to zero unless the parent company has guaranteed obligations of the subsidiary and VIEs or is otherwise committed to provide further financial support. If the subsidiary and VIEs subsequently reports net income, the parent company shall resume applying the equity method only after its share of that net income equals the share of net losses not recognized during the period the equity method was suspended. The parent company’s condensed financial information should be read in conjunction with the Group’s consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2018
Basis of presentation	Basis of presentation and use of estimates The accompanying consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”). The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the balance sheet dates and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions reflected in the Group’s consolidated financial statements include, but are not limited to, revenue recognition, allowance for doubtful accounts, useful lives of property and equipment, impairment of long-lived assets, long-term investments and goodwill, the purchase price allocation and fair value of non-controlling interests with respect to business combinations and acquisition of equity method investees, realization of deferred tax assets, uncertain income tax positions and share-based compensation. Actual results could materially differ from those estimates.
Changes in Presentation of Comparative Information	Changes in Presentation of Comparative Information Certain comparative amounts have been reclassified to conform with the current year’s presentation. These reclassifications had no effect on the reported results of operations.
Principles of consolidation	Principles of consolidation The consolidated financial statements of the Group include the financial statements of the Company, its subsidiaries and VIEs in which it has a controlling financial interest. The results of the subsidiaries are consolidated from the date on which the Group obtained control and continue to be consolidated until the date that such control ceases. A controlling financial interest is typically determined when a company holds a majority of the voting equity interest in an entity. Furthermore, if the Company demonstrates that it has ability to control the VIEs through its rights to all the residual benefits of the VIEs and its obligation to fund losses of the VIEs then the entity is consolidated. All significant intercompany balances and transactions among the Company, its subsidiaries and VIEs have been eliminated on consolidation.
Convenience translation	Convenience translation Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the noon buying rate of US$1.00 to RMB6.8755 on December 31, 2018 in the city of New York for wire transfers of RMB as certified for customs purposes by the Federal Reserve Bank of New York. No representation is made that the RMB amounts could have been, or could be, converted into US$ at such rate.
Foreign currency translation	Foreign currency translation The functional currency of the Company, BVI, 500wan HK, 500.com UK, 500.com USA and 500.com JP is the US$. The functional currency of The Multi Group and its subsidiaries is EUR. E-Sun Sky Computer with its VIEs determined their functional currencies to be the RMB, which is their respective local currencies based on the criteria of ASC 830, “ Foreign Currency Matters” Transactions denominated in foreign currencies are remeasured into the functional currency at the exchange rates prevailing on the transaction dates. Exchange gains and losses resulting from foreign currency transactions are included in the consolidated statements of comprehensive income (loss).
Business combinations and noncontrolling interests	Business combinations and noncontrolling interests The Group accounts for its business combinations using the purchase method of accounting in accordance with ASC 805 (“ASC 805”), “ Business Combinations” . The purchase method of accounting requires that the consideration transferred to be allocated to the assets, including separately identifiable assets and liabilities the Group acquired, based on their estimated fair values. The consideration transferred in an acquisition is measured as the aggregate of the fair values at the date of exchange of the assets given, liabilities incurred, and equity instruments issued as well as the contingent considerations and all contractual contingencies as of the acquisition date. The costs directly attributable to the acquisition are expensed as incurred. Identifiable assets, liabilities and contingent liabilities acquired or assumed are measured separately at their fair value as of the acquisition date, irrespective of the extent of any noncontrolling interests. The excess of (i) the total of cost of acquisition, fair value of the noncontrolling interests and acquisition date fair value of any previously held equity interest in the acquiree over, (ii) the fair value of the identifiable net assets of the acquiree, is recorded as goodwill. If the cost of acquisition is less than the fair value of the net assets of the subsidiary acquired, the difference is recognized directly in earnings. The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Group determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. For the Company's majority-owned VIEs, a noncontrolling interest is recognized to reflect the portion of their equity which is not attributable, directly or indirectly, to the Group. “Net income (loss)” on the consolidated income statements includes the “net loss attributable to noncontrolling interests”. The cumulative results of operations attributable to noncontrolling interests are also recorded as noncontrolling interests in the Company's consolidated balance sheets.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents represent cash on hand and time deposits, which have original maturities of three months or less when purchased and which are unrestricted as to withdrawal and use. In addition, highly liquid investments which have original maturities of three months or less when purchased are classified as cash equivalents.
Restricted cash and Time deposits	Restricted cash Restricted cash represents cash held by banks which were granted by the government and designated only for the purchase of fixed assets for certain approved projects. In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires companies to include amounts generally described as restricted cash and restricted cash equivalents in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts presented in the statement of cash flows. The Company adopted the new standard effective January 1, 2018, using the retrospective transition method. All restricted cash was presented on the face of the consolidated balance sheet as “Restricted cash.” Time deposits Time deposits represent deposits in commercial banks with original maturities of greater than three months but less than a year. Interest income from time deposits is included in the consolidated statements of comprehensive income (loss).
Accounts receivables and allowance for doubtful accounts	Accounts receivable and allowance for doubtful accounts Accounts receivable are carried at original invoiced amount less an allowance for doubtful accounts when collection of the amount is no longer probable. In evaluating the collectability of receivable balances, the Group considers factors such as customer circumstances or age of the receivable. Accounts receivable are written off after all collection efforts have ceased. Collateral is not typically required, nor is interest charged on accounts receivable.
Property and equipment, net	Property and equipment, net Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Category Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets - Repair and maintenance costs are charged to expense as incurred, whereas the cost of renewals and betterment that extend the useful lives of property and equipment are capitalized as additions to the related assets. Retirements, sales and disposals of assets are recorded by removing the cost and accumulated depreciation from the asset and accumulated depreciation accounts with any resulting gain or loss reflected in the consolidated statements of comprehensive income (loss).
Intangible assets	Intangible assets Intangible assets represent computer software, internet domain name, licensing agreement, and intangible assets arising from business combination. Computer software, internet domain name and licensing agreement purchased from third parties are initially recorded at cost and amortized on a straight line basis over their estimated useful lives of the respective assets. The Group performs valuation of the intangible assets arising from business combination to determine the relative fair value to be assigned to each asset acquired. The acquired intangible assets are recognized and measured at fair value and are expensed or amortized using the straight-line approach over the estimated useful life of the assets. Estimated useful lives of the respective assets are set out as follows: Category Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Licenses and brand name 10 years Mobile applications and software 5 years
Goodwill	Goodwill The Group assesses goodwill for impairment in accordance with ASC 350-20 (“ASC 350-20”), “ Intangibles–Goodwill and Other: Goodwill” , which requires that goodwill to be tested for impairment at the reporting unit level at least annually and more frequently upon the occurrence of certain events, as defined by ASC 350-20. The Group has the option to first assess qualitative factors to determine whether it is necessary to perform the two-step test in accordance with ASC 350-20. If the Group believes, as a result of the qualitative assessment, that it is more-likely-than-not that the fair value of the reporting unit is less than its carrying amount, the two-step quantitative impairment test described above is required. Otherwise, no further testing is required. In the qualitative assessment, the Group considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. In performing the two-step quantitative impairment test, the first step compares the carrying amount of the reporting unit to the fair value of the reporting unit based on either quoted market prices of the ordinary shares or estimated fair value using a combination of the income approach and the market approach. If the fair value of the reporting unit exceeds the carrying value of the reporting unit, goodwill is not impaired and the Group is not required to perform further testing. If the carrying value of the reporting unit exceeds the fair value of the reporting unit, then the Group must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. The fair value of the reporting unit is allocated to its assets and liabilities in a manner similar to a purchase price allocation in order to determine the implied fair value of the reporting unit goodwill. If the carrying amount of the goodwill is greater than its implied fair value, the excess is recognized as an impairment loss. In 2018, the Group performed qualitative assessments for the reporting units. Based on the requirements of ASC 350-20, the Group evaluated all relevant factors, weighed all factors in their entirety and concluded that the fair value was greater than the carrying amount of the newly acquired entities, and further impairment testing on goodwill was unnecessary as of December 31, 2018.
Impairment of long-lived assets other than goodwill	Impairment of long-lived assets other than goodwill The Group evaluates its long-lived assets or asset group, including property and equipment and intangible assets, with finite lives for impairment whenever events or changes in circumstances (such as a significant adverse change to market conditions that will impact the future use of the assets) indicate that the carrying amount of a group of long-lived assets may not be fully recoverable. When these events occur, the Group evaluates the impairment by comparing the carrying amount of the assets to future undiscounted cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flow is less than the carrying amount of the assets, the Group recognizes an impairment loss based on the excess of the carrying amount of the asset group over its fair value. No impairment charge for the long-lived assets was recognized for any of the years presented.
Short-term investments and Long-term investments	Short-term investments Short-term investments of the Company are comprised of an investment in targeted asset management plan with fixed rate. The Company accounts for all highly liquid investments with original maturities of greater than three months, but less than 12 months, in accordance with ASC 320-10, “Investments—Debt and Equity Securities”, which are classified as short-term investments. Dividend and interest income, including amortization of the premium and discount arising at acquisition for all categories of investments in securities are included in earnings. Any realized gains or losses on the sale of the short-term investments are determined on a specific identification method, and such gains and losses are reflected in earnings during the period in which gains or losses are realized. The Company evaluates whether a decline in fair value below the amortized cost basis is other-than-temporary in accordance with ASC 320. Other-than-temporary impairment loss is recognized in earnings equal to the entire excess of the debt security’s amortized cost basis over its fair value at the balance sheet date of the reporting period for which the assessment is made. Long-term investments The Company’s long-term investments consist of equity investments with and equity investments without readily determinable fair value and equity method investments. Prior to adopting ASC Topic 321, Investments Equity Securities (“ASC 321”) on January 1, 2018, the Company carries at cost its investments in investees that do not have readily determinable fair value and over which the Company does not have significant influence, in accordance with ASC Subtopic 325-20, Investments-Other: Cost Method Investments. In accordance with ASC 325, “ Investments-Other” , for investments in an investee over which the Group does not have significant influence and which do not have readily determinable fair value, the Group carries the investment at cost and only adjusts for other-than-temporary declines in fair value and distributions of earnings that exceed the Group’s share of earnings since its investment. Management regularly evaluates the impairment of the cost method investments based on performance and financial position of the investee as well as other evidence of market value. Such evaluation includes, but is not limited to, reviewing the investee’s cash position, recent financing, projected and historical financial performance, cash flow forecasts and financing needs. An impairment loss is recognized in earnings equal to the excess of the investment’s cost over its fair value at the balance sheet date of the reporting period for which the assessment is made. The fair value would then become the new cost basis of investment. Pursuant to ASC 321, equity investments, except for those accounted for under the equity method, those that result in consolidation of the investee and certain other investments, are measured at fair value, and any changes in fair value are recognized in earnings. For equity securities without readily determinable fair value and do not qualify for the existing practical expedient in ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”) to estimate fair value using the net asset value per share (or its equivalent) of the investment, the Company elected to use the measurement alternative to measure those investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer, if any. Equity securities with readily determinable fair value are measured at fair values, and any changes in fair value are recognized in earnings. For those equity investments that the Company elects to use the measurement alternative, the Company makes a qualitative assessment of whether the investment is impaired at each reporting date. If a qualitative assessment indicates that the investment is impaired, the entity has to estimate the investment’s fair value in accordance with the principles of ASC 820. If the fair value is less than the investment’s carrying value, the entity has to recognize an impairment loss in net income equal to the difference between the carrying value and fair value. As the Company’s investments in investees do not have readily determinable fair value and over which the Company does not have significant influence, when adopting ASC 321 on January 1, 2018, the Company elected to use the measurement alternative to measure those investments at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer, if any. There was no effect on the Company’s consolidated financial statements subsequent to the adoption of ASC 321. Investments in entities in which the Group can exercise significant influence but does not own a majority equity interest or control are accounted for using the equity method of accounting in accordance with ASC 323 (“ASC 323”), “Investments-Equity Method and Joint Ventures” . Under the equity method, the Group initially records its investment at cost and the difference between the cost of the equity investee and the fair value of the underlying equity in the net assets of the equity investee is recognized as equity method goodwill, which is included in the equity method investment on the consolidated balance sheets. The equity method goodwill is not subsequently amortized and is not tested for impairment under ASC 350. The Group subsequently adjusts the carrying amount of the investment to recognize the Group’s proportionate share of each equity investee’s net income or loss into earnings after the date of investment. The Group will discontinue applying the equity method if an investment (and additional financial supports to the investee, if any) has been reduced to zero. Under the conditions that the Group is not required to advance additional funds to an investee and the equity-method investment in ordinary shares is reduced to zero, if further investments are made that have a higher liquidation preference than ordinary shares, the Group would recognize the loss based on its percentage of the investment with the same liquidation preference, and the loss would be applied to those investments of a lower liquidation preference first before being further applied to the investments of a higher liquidation preference. The Group evaluates the equity method investments for impairment whenever events or changes in circumstances indicate that the carrying amount of the investment might not be recoverable. Factors considered by the Company when determining whether an investment has been other-than-temporarily-impaired, includes, but not limited to, the length of the time and the extent to which the market value has been less than cost, the financial performance and near-term prospect of the investee, and the Company’s intentand ability to retain the investment until the recovery of its cost. An impairment loss on the equity method investments is recognized in earnings when the decline in value is determined to be other-than-temporary. According to the above testing, an impairment loss of RMB28.8 million and RMB149.9 million (US$ 21.8 million) for the long-term investments was recognized during the year of 2017 and 2018, respectively. Investments in limited partnerships greater than 5% are considered more than minor and accounted for using the equity method, unless it is readily apparent that the Group has virtually no influence over the partnership’s financial and operating policies.
Fair Value measurements	Fair value measurements Financial instruments include cash and cash equivalents, restricted cash, time deposits, accounts receivable, investment in targeted asset management plan with fixed rate (Note 6), other receivables, and accounts payable. As of December 31, 2017 and 2018, the carrying values of these financial instruments, approximate their fair values due to their short-term maturities. The Group applies ASC 820 (“ASC 820”), “Fair Value Measurements and Disclosures ”. ASC 820 defines fair value, establishes a framework for measuring fair value and requires disclosures to be provided on fair value measurement. ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1— Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2— Include other inputs that are directly or indirectly observable in the marketplace. Level 3— Unobservable inputs which are supported by little or no market activity. ASC 820 describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach, and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The measurement is based on the value indicated by current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace an asset.
Revenue recognition	Revenue recognition The Group’s revenues were derived principally from online lottery purchase services before voluntary suspension of this service since April 2015. During the voluntary suspension period, the Group diversified its revenue streams, and derived revenues from mobile gaming services, sports information services, online spot commodity trading services and online gaming services. The Group adopted ASC Topic 606 Revenue from Contracts with Customers (“ASC 606”), from January 1, 2018, using the modified retrospective method. Revenues for the year ended December 31, 2018 were presented under ASC 606, and revenues for the years ended December 31, 2017 and 2016 were not adjusted and continue to be presented under ASC Topic 605, Revenue Recognition. The Group set up an implementation schedule and analyzed each of the Group’s revenue streams in accordance with ASC 606 to determine the impact on the Group’s consolidated financial statements. After the analyzation, we concluded that there was no substantial impact on the Group’s consolidated financial statements upon the adoption of ASC 606. The Group’s revenue recognition policies effective on the adoption date of ASC 606 are as follows: Online lottery purchase services The Group earns service income for online lottery purchase services and revenues are generated from processing lottery purchase orders from end users (“Service Fee”). The Group receives purchase orders from end users through its online platforms, which include website and mobile applications, and processes the orders with the lottery administration centers. Service Fee is received from the lottery administration centers based on the pre-determined service fee rate and the total amount of the processed orders. Pursuant to ASC 605-45, “ Principal Agent Considerations Contingent service fee The Group was also entitled to receive additional Service Fee from lottery administration centers when the total amounts of purchase orders reach an agreed threshold (“Contingent Service Fee”). As the Group is the agent in providing lottery purchase services, any Contingent Service Fee received is recorded as net revenue when the agreed thresholds are reached. Once the Group reaches the agreed thresholds, the Contingent Service Fee is then fixed and not subject to any adjustments. As a result of the voluntarily suspension of the online lottery purchase services mentioned above, the Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. The Super VIP incentive Certain qualified end users (“Super VIP”) are entitled to receive incentives from the Group based on actual purchase amount of each transaction. As the Group does not receive an additional service or benefit from the Super VIP other than service fee earned from lottery administration centers by the Group from the transaction, the incentives are recognized as a reduction of revenue at each year end in accordance with ASC 605-50, “ Customer Payments and Incentives” . The Group did not generate any revenue from this source since April 2015, and it is uncertain when we will be able to generate this fee again in the future. Lottery pool purchase service Lottery pools involve individual end users purchasing a share in a pooled lottery outcome or group of outcomes with other end users. Through the lottery pool purchase service, an end user, an initiator, starts a lottery pool by specifying a range of parameters, such as the lottery portfolio, total purchase amount and payout ratio. The initiator is required to commit a minimum initial purchase amount when they initiate a pool, usually a certain percentage of the total purchase amount. Other end users then join the pool by agreeing to the parameters set by the initiator and committing on the purchase amount. When the total purchase amount as specified by the initiator is reached, the pooled lottery purchase order will be delivered in the manner specified by the initiator. When the actual purchase amount does not reach the total purchase amount as specified by the initiator but reaches a certain percentage of total purchase amount before the lottery pool purchase deadline, the Group contributes the remaining outstanding purchase amount (i.e., residual amount of lottery pool) to complete the lottery pool transaction. If the tickets win prizes from the lottery, the Group distributes the cash prizes to the end users based on the predetermined payout ratio, and the residual amount after distribution is retained by the Group. Since the Group contributes the residual amount of lottery pool to earn Service Fee from the purchase made by the lottery pool and does not provide any service to the lottery administration centers, the residual amount of lottery pool contributed by the Group paid to the lottery administration centers is recognized as a reduction of revenue. The residual amount of the lottery pool retained by the Group after distribution of the prizes are presented as “other operating income”, and recognized upon the announcement of lottery results, as the Group’s principal activity is to provide lottery purchase services to end users. The Group did not generate any revenue from this source either since April 2015, and it is uncertain when we will be able to generate this fee again in the future. Mobile Gaming Services The Group provides mobile gaming services through its designated mobile applications Quiz, Night of Texas Hold’em Poker and Paiyou for Texas Hold’em Poker, and derives revenues from in-game virtual tokens and other virtual items in its game development operations. Once the users purchase virtual tokens or other virtual items through the Group’s own charging system, the Group has an implied obligation to provide the services which enable the virtual tokens or other virtual items to be displayed or used in the games. Thus, the Group initially records the proceeds received from the sales of virtual tokens and other virtual items as deferred revenue, and once they are consumed when the services are rendered to the respective paying players, the Group recognizes the attributable portion of the deferred revenue as revenue. For consumable virtual items representing items that are extinguished after consumption in the form of fixed charges levied on each round of games played, the Group recognizes revenue when the items are consumed and the related services are rendered, since the paying players will not continue to benefit from the virtual items thereafter. For durable virtual items that are accessible and beneficial to paying players over an extended period, the Group recognizes revenue ratably over the average life of durable virtual items for the applicable game, which the Group makes best estimates to be average playing period of paying players. The Group tracks each paying player’s log-in history to estimate the Average playing period of paying players. While the Group believes its estimates to be reasonable based on sufficient available paying player information, it may revise such estimates in the future as the games’ operation periods change or there is indication that the similarities in characteristics and playing patterns of paying players of the games change. Any adjustments arising from changes in the estimates of the average paying player life would be applied prospectively. The Group disposed of a group of components that engage in the mobile gaming services by sale on February 9, 2018, which is reported as discontinued operations for the year ended December 31, 2018. Sports Information Services The Group offers a comprehensive sports information portal via a designated mobile application, which covers (i) real time soccer match information; and (ii) data-driven soccer match predictions generated by our proprietary analysis engine. Users can also post free or pay-per-view contents such as proprietary observations and analyses on the sports information portal. The users pay for each information and data subscription at a fixed price, and the Group pays the original information providers a fixed percentage of total purchase amount. Revenue is recognized when users is accessible to the pay-per-view contents. The Group records the revenue on a net basis because the Group is not the primary obligor to provide the information, but acts as an agent in providing such purchase services. Online spot commodity trading services The Group provides online spot commodity trading services through our designated website and mobile application in Shenzhen Kaisheng. The Group provides customers with reliable online spot commodity trading for gold trade and delay products across PC and mobile devices. The Group processes customer orders through a commercial bank, and later formed a joint venture with Shenzhen Gold Exchange on May 11, 2018 to provide online spot commodity trading services. Trading commissions are received from the commercial bank based on the pre-determined commission fee rate and the total amount of the processed orders. The Group began to generate a small amount of revenue from trading commissions on the online spot commodity trading services since 2017. Online gaming services The Group also provides online lottery betting and online casino platforms through the Group’s designated website after the acquisition of TMG in July 2017. The Group earns difference between betting and winning for online lottery betting services and online casino platforms as revenues that are generated from our registered users. The registered users enter into certain terms and conditions when they first open their accounts with the Group. Lottery and Casino purchase orders are placed by users through the Group’s online platforms view website. Then the Group process these orders. Prior to processing orders, users prepay all purchase amounts. The Group pays users prizes when there are any winnings attributable to users. The Group record revenues on a net basis by deducting the winning amounts from betting amounts. Revenue comprises the fair value of the consideration received for the provision of internet gaming in the ordinary course of the company's activities, which is recognized when the outcome of an event is known.
Cost of services	Cost of services Account handling expenses Account handling expenses, which consist primarily of transaction fees charged by banks and third-party payment processors for cash transfers between our users’ accounts on our online platform including websites and mobile applications and their accounts with banks or third-party payment processors, were RMB0.6 million, 2.9 million 6.8 (US$1.0 million) in 2016, 2017 and 2018, respectively. Server leasing and maintenance expenses Server leasing and maintenance expenses, which consist primarily of leasing expense of servers and other equipment used in providing online services, were RMB8.3 million, RMB8.2 million and RMB6.1 million (US$0.9 million) in 2016, 2017 and 2018, respectively. Lottery Insurance expenses Lottery insurance expenses, are consist of insurance premiums payable to insurers for covering the first two categories of winnings in online gaming services for betting on the outcome of lotteries after the acquisition of TMG in July 2017, were RMB7.0 million and RMB20.4 million (US$3.0 million) in 2017 and 2018, respectively. Platform fee Platform fees, are consist of fees payable to online gaming software suppliers for providing various online casino games on TMG’s websites after the acquisition of TMG in July 2017, were RMB4.5 million and RMB12.1 million (US$1.8 million) in 2017 and 2018, respectively. Regulatory and compliance fees Regulatory and compliance fees, which consist of fees payable to regulatory bodies such as Gambling Commission, HM Revenue & Customs, Malta Gaming Authority and Certria EOOD after the acquisition of TMG in July 2017, were RMB0.6 million and RMB2.0 million (US$0.3 million) in 2017 and 2018, respectively. Amortization fees Amortization fees, which consist primarily of amortization of intangible assets arising from business combinations, were RMB3 million, RMB13.7 million and RMB31.5 million (US$4.6 million) Cost of services also comprises employee costs, business tax and surcharges and other direct costs incurred in providing services. These costs are expensed as incurred.
Sales and marketing expenses	Sales and marketing expenses Commission to certain internet companies The Group is responsible to pay certain internet companies a predetermined fixed percentage of the total purchase or deposit amount only if 1) public users enter the Group’s website by redirection through these internet companies’ website, and/or 2) public users have successfully purchased any lottery tickets, virtual tokens, or betting, or deposited certain amounts of cash into their accounts in the Group’s website. The Group is responsible for providing respective services when such public users enter the Group’s website to purchase lottery tickets, virtual tokens or betting. Since these internet companies are providing similar services as those services that have been provided by the Group’s internal sales personnel agent, any relevant costs to be paid by the Group is treated as sales and marketing expenses. Advertising expenditure Advertising costs are expensed as incurred and are included in “sales and marketing expenses” in the consolidated statements of comprehensive income (loss). Advertising expenses for the years ended December 31, 2016, 2017 and 2018 were approximately RMB0.3 million, RMB1.0 million and RMB2.4 million (US$0.3 million), respectively. Sponsorship expenses The Group’s sales and marketing expenses also consist of payments under a sponsorship contract. Accounting for sponsorship payments is based upon specific contract provisions. Generally, sponsorship payments are expensed on a straight-line basis over the term of the contract after giving recognition to periodic performance provisions of the contract. Prepayments made under the contract are included in prepayments based on the period to which the prepayments apply. Awards granted to certain qualified end users All new end users are entitled to receive bonus credits from the Group upon the initial registration of their user accounts and all existing users are entitled to receive bonus credits from the Group by depositing a specified amount of cash into their user accounts during a marketing promotion period. The end users can only apply the bonus credits received against future lottery product purchases and online gaming orders processed by the Group. The bonus credits are recognized as sales and marketing expenses when the bonus credits are granted to the end users. All new and existing end users are entitled to receive additional prize money for winning tickets from selected lotteries purchased through the Group during a marketing promotion period. The cost of the additional prize money is to be shared between the lottery administration centers and the Group at a predetermined percentage or funded entirely by the Group. As the Group does not receive an identifiable benefit in return for the consideration that is sufficiently separable from the lottery administration centers’ purchase of lottery processing services from the Group, the additional prize money provided to the lottery administration center, are recognized as a reduction of revenue in accordance with ASC 605-50, “Customer Payments and Incentives” , and during the year ended December 31, 2018. The additional prize money provided directly from the Group to customers are recognized as sales and marketing expenses when the prize are granted to the end users.
Service development expenses	Service development expenses Service development expenses consist primarily of personnel-related expenses incurred for the development of, enhancement to, and maintenance of the Group’s website that either (i) did not meet the capitalization criteria in accordance with ASC 350, “Intangibles - Goodwill and other” ; or (ii) met the capitalization criteria but the costs cannot be separated on a reasonably cost-effective basis between maintenance and relatively minor upgrades and enhancements. Service development expenses are recognized as expenses when incurred.
Leases	Leases The Group leases certain office facilities under cancelable and non-cancelable operating leases, generally with an option to renew upon expiration of the lease term. In accordance with ASC 840, “ Leases” , leases for a lessee are classified at the inception date as either a capital lease or an operating lease. For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date. A capital lease is accounted for as if there was an acquisition of an asset and an incurrence of an obligation at the inception of the lease. The Group had no capital leases for the years ended December 31, 2016, 2017 and 2018.
Income taxes	Income taxes The Group follows the liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial reporting and tax bases of assets and liabilities using enacted tax rates that will be in effect in the period in which the differences are expected to reverse. The Group records a valuation allowance to offset deferred tax assets if based on the weight of available evidence, it is more-likely-than-not that some portion, or all, of the deferred tax assets will not be realized. The effect on deferred taxes of a change in tax rates is recognized in the consolidated statements of comprehensive income (loss) in the period that includes the enactment date. Interest and penalties arising from underpayment of income taxes are computed in accordance with the related PRC tax law and is classified in the consolidated statements of comprehensive income (loss) as income tax expense. The amount of interest expense is computed by applying the applicable statutory rate of interest to the difference between the tax position recognized and the amount previously taken or expected to be taken in a tax return. In accordance with the provisions of ASC 740 (“ASC 740”), “Income taxes” the Group recognizes in its financial statements the impact of a tax position if a tax return position or future tax position is “more likely than not” to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the “more likely than not” recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement. The Group’s estimated liability for unrecognized tax position which is included in the “long-term payables” account is periodically assessed for adequacy and may be affected by changing interpretations of laws, rulings by tax authorities, changes and/or developments with respect to tax audits, and expiration of the statute of limitations. The outcome for a particular audit cannot be determined with certainty prior to the conclusion of the audit and, in some cases, appeal or litigation process. The actual benefits or liability ultimately realized may differ from the Group’s estimates. As each audit is concluded, adjustments, if any, are recorded in the Group’s financial statements. Additionally, in future periods, changes in facts, circumstances, and new information may require the Group to adjust the recognition and measurement estimates with regard to individual tax positions. Changes in recognition and measurement estimates are recognized in the period in which the changes occur. In conjunction with ASC 740, the Group also applied ASC 740-30 (“ASC 740-30”), “ Income Taxes: Other Considerations or Special Areas” , to account for the temporary differences arising from the undistributed earnings of the foreign subsidiaries. According to ASC 740-30, all undistributed earnings of a subsidiary shall be presumed to be transferred to the parent entity. Accordingly, the undistributed earnings of a subsidiary included in consolidated income shall be accounted for as a temporary difference and affect deferred tax expense unless the tax law provides a means by which the investment in a domestic subsidiary can be recovered tax free.
Share-based compensation	Share-based compensation Share options and restricted shares granted to employees and directors Share options and restricted shares granted to employees and directors are accounted for under ASC 718 (“ASC 718”), Compensation - Stock compensation . In accordance with ASC 718, the Group determines whether a share option or restricted shares should be classified and accounted for as a liability award or an equity award. All grants of share options and restricted shares to employees and directors classified as equity awards are recognized in the financial statements based on their grant date fair values. There were no liability awards granted during any of the periods stated herein. The Group recognizes compensation expense using the accelerated method for share options and restricted shares granted with graded vesting based on service conditions, provided that the amount of compensation expense recognized at any date is at least equal to the portion of the grant-date value of the share options and restricted shares that are vested at that date. ASC 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in the subsequent period if actual forfeitures differ from initial estimates. Forfeiture rate is estimated based on historical and future expectation of employee turnover rate and is adjusted to reflect future change in circumstances and facts, if any. Share-based compensation expense is recorded net of estimated forfeitures such that expense was recorded only for those share-based awards that are expected to vest. To the extent the Group revises this estimate in the future, the share-based payments could be materially impacted in the period of revision, as well as in following periods. The compensation costs associated with a modification of the terms of the award (“Modification Award”) are recognized if either the original vesting condition or the new vesting condition has been achieved. Such compensation costs cannot be less than the grant-date fair value of the original award. The incremental compensation cost is measured as the excess of the fair value of the Modification Award over the fair value of the original award at the modification date. Therefore, in relation to the Modification Award, the Group recognizes share-based compensation over the vesting periods of the new options, which comprises, (1) the amortization of the incremental portion of share-based compensation over the remaining vesting term, and (2) any unrecognized compensation cost of original award, using either the original term or the new term, whichever is higher for each reporting period. Share options granted to non-employees The Group records share-based compensation expense for awards granted to non-employees in exchange for services at fair value in accordance with the provisions of ASC 505-50, “ Equity-based payment to non-employees” . As the share options granted to non-employees were fully vested on the grant date, the related compensation expense was fully recognized in the consolidated statement of comprehensive income (loss) on the grant date. The Group, with the assistance of an independent valuation firm, determined the fair values of the share options recognized in the consolidated financial statements. The binomial option pricing model is applied in determining the estimated fair value of the share options granted to employees and non-employees.
Earnings per share	Earnings (Loss) per share The Company computes earnings per Class A and Class B ordinary shares in accordance with ASC 260 (“ASC 260”), “ Earnings Per Share” The liquidation and dividend rights of the holders of the Company’s Class A and Class B ordinary shares are identical, except with respect to voting. As a result, and in accordance with ASC 260, the undistributed earnings for each year are allocated based on the contractual participation rights of the Class A and Class B ordinary shares as if the earnings for the year had been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the conversion of Class B ordinary shares is assumed in the computation of the diluted net loss per share of Class A ordinary shares, the undistributed earnings are equal to net loss for that computation. For the purposes of calculating the Company’s basic and diluted earnings (loss) per Class A and Class B ordinary shares, the ordinary shares relating to the options that were exercised are assumed to have been outstanding from the date of exercise of such options. The Company treated the excess amount of redemption price of the redeemable noncontrolling interests over its fair value as being akin to a dividend, which indirectly affected in the calculation of loss available to ordinary shareholders of the Company used in the loss per share calculation.
Government grants	Government grants Government grants are recognized when there is reasonable assurance that the attached conditions will be complied with. When the grant relates to an expense item, it is recognized in the consolidated statements of comprehensive income (loss) over the period necessary to match the grant on a systematic basis to the related costs. Where the grant relates to an asset acquisition, it is recognized in the consolidated statements of comprehensive income (loss) in proportion to the depreciation of the related assets.
Treasury shares	Treasury shares The Group accounts for treasury shares using the cost method. Under this method, the cost incurred to purchase the shares is recorded in the treasury shares account on the consolidated balance sheets. At retirement, the ordinary shares account is charged only for the aggregate par value of the shares. The excess of the acquisition cost of treasury shares over the aggregate par value is allocated between additional paid-in capital (up to the amount credited to the additional paid-in capital upon original issuance of the shares) and retained earnings.
Change in accounting principle	Change in accounting principle There were no changes during 2018 relating to (i) significant and critical accounting policies, (ii) critical accounting estimates and (iii) evaluation of the quality and application of the Company’s accounting policies and reasonableness of estimates.
Recent accounting pronouncements	Recent accounting pronouncements In February 2016, the FASB issued ASU No. 2016-02, “Leases” (“ASU 2016-02”). ASU 2016-02 specifies the accounting for leases. For operating leases, ASU 2016-02 requires a lessee to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in its balance sheet. The standard also requires a lessee to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, on a generally straight-line basis. ASU 2016-02 is effective for public companies for annual reporting periods, and interim periods within those years beginning after December 15, 2018. The Company has adopted ASU 2016-02 on January 1, 2019 using a modified retrospective method and will not restate comparable periods. The Company elected the package of practical expedients permitted under the transition guidance, which allow the Company to carry forward the historical lease classification, the assessment whether a contract is or contains a lease and initial direct costs for any leases that exist prior to adoption of the new standard. The Company also elected the practical expedient not to separate lease and non-lease components for certain classes of underlying assets and the short-term lease exemption for contracts with lease terms of 12 months or less. Certain operating leases related to offices which are subject to ASU 2016-02 and right-of-use assets and lease liabilities are recognized on the Company’s consolidated balance sheet. The Company currently believes the most significant change is related to the recognition of right-of-use assets and lease liabilities on the Company’s balance sheet for certain in-scope operating leases. There is no material impact on net assets and the consolidated statement of comprehensive income as a result of adopting the new standard. In June 2016, the FASB issued ASU No. 2016-13 (“ASU 2016-13”), “Financial Instruments – Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments” . ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. The standard will replace “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. For available-for-sale debt securities, entities will be required to record allowances rather than reduce the carrying amount, as they do today under the other-than-temporary impairment model. The standard is effective for public business entities for annual periods beginning after December 15, 2019, and interim periods therein. Early adoption is permitted. The Company is currently in the process of evaluating the impact of adopting ASU 2016-13 on its consolidated financial statements. In January 2017, the FASB issued Accounting Standards Update No. 2017-04(“ASU 2017-04”), “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment”. ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. This standard is effective for public business entities in fiscal years beginning after December 15, 2019. Early adoption is permitted. The Company is currently in the process of evaluating the impact of adopting ASU 2017-04 on its consolidated financial statements. In July 2017, the FASB issued ASU No. 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), and Derivatives and Hedging (Topic 815). The guidance of Part I is to clarify accounting for certain financial instruments with down round feature in a financial instrument that reduces the strike price of an issued financial instrument if the issuer sells shares of its stock for an amount less than the currently stated strike price of the issued financial instrument or issues an equity-linked financial instrument with a strike price below the currently stated strike price of the issued financial instrument. For freestanding equity classified financial instruments, the amendments require entities that present earnings per share (“EPS”) in accordance with Topic 260 to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic EPS. Convertible instruments with embedded conversion options that have down round features are now subject to the specialized guidance for contingent beneficial conversion features. The amendments also recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. The amendments in Part I of ASU No. 2017-11 are effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early adoption is permitted for all entities, including adoption in an interim period. The amendments in Part II of this Update do not require any transition guidance because those amendments do not have an accounting effect. The Group has not early adopted this update. The Group is currently in the process of evaluating the impact of adoption of ASU 2017-11 on its consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, “Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”. The amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. ASU No. 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Group has not early adopted this update. The Group does not expect that the adoption of this guidance will have a material impact on its consolidated financial statements. In March 2018, the FASB issued ASU 2018-05 - Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 that was signed into law on December 22, 2017 and Staff Accounting Bulletin No. 118 ("SAB 118") that was released by the Securities and Exchange Commission. The Act changes numerous provisions that impact U.S. corporate tax rates, business-related exclusions, and deductions and credits and may additionally have international tax consequences for many companies that operate internationally. The Group has evaluated the impact of the Act as well as the guidance of SAB 118 and incorporated the changes into the determination of a reasonable estimate of the deferred tax and appropriate disclosures in the notes to our consolidated financial statements (see Note 13). In June 2018, the FASB issued ASU No. 2018-07, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting to simplify the accounting for share-based payments to nonemployees (“ASU 2018-07”) by aligning it with the accounting for share-based payments to employees, with certain exceptions. Under the guidance, the measurement of equity-classified nonemployee awards will be fixed at the grant date, which may lower their cost and reduce volatility in the income statement. The guidance is effective for public business entities in annual periods beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including in an interim period. The ASU 2018-07 will impact the accounting of the share-based awards granted to non-employees and the Company does not expect a significant impact on its consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”) which eliminates, adds and modifies certain disclosure requirements for fair value measurements. Under the guidance, public companies will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. The guidance is effective for all entities for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years, but entities are permitted to early adopt either the entire standard or only the provisions that eliminate or modify the requirements. The Company does not expect a significant impact on its consolidated financial statements.

ORGANIZATION (Tables)

ORGANIZATION (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Variable Interest Entity	Entity Date of establishment Place of establishment Percentage of ownership by the Company Principal activities Subsidiaries Fine Brand Limited (“BVI”) February 9, 2011 British Virgin Islands 100 % Investment Holding 500wan HK Limited (“500wan HK”) March 8, 2011 Hong Kong 100 % Investment Holding 500.com Nihon Co., Ltd. (“500.com JP”) July 27, 2017 Japan 100 % Investment Holding 500.com USA Corporation (“500.com USA”) July 21, 2014 USA 100 % Investment Holding 500.com Gaming UK Limited (“500.com UK”) August 5, 2016 UK 100 % Investment Holding E-Sun Sky Computer (Shenzhen) Co., Ltd. (“E-Sun Sky Computer”) June 18, 2007 PRC 100 % Software Service Hainan Menghuanxingchen Computer Co., Ltd. (“Hainan Menghuanxingchen”) May 3, 2018 PRC 100 % Software Service The Multi Group Ltd (“The Multi Group”) June 26, 2015 Malta 93 % Investment Holding Multi Warehouse Ltd****** December 3, 2014 Malta 93 % Online Gaming Multi Brand Gaming Ltd****** October 3, 2014 Malta 93 % Online Gaming Multilotto UK Ltd****** September1, 2016 Malta 93 % Online Gaming Lotto Warehouse Ltd****** September1, 2016 Malta 93 % Online Gaming Wasp Media Ltd****** August 12, 2016 Malta 93 % Online Gaming Round Spot Services Ltd****** May 6, 2015 Cyprus 93 % Online Gaming Multi Pay N.V.****** August 25, 2011 Curacao 93 % Online Gaming Multilotto Australia PTY Ltd****** December13,2016 Australia 93 % Online Gaming Oddson Europe Ltd****** January10, 2018 Malta 93 % Online Gaming Entity Date of Place of Percentage of Company Principal activities VIEs Shenzhen E-Sun Network Co., Ltd. (“E-Sun Network”) December 7, 1999 PRC - Online Lottery Service Shenzhen Youlanguang Science and Technology Co., Ltd. (“ Youlanguang Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Guangtiandi Science and Technology Co., Ltd. (“ Guangtiandi Technology”) December 16, 2008 PRC - Online Lottery Service Shenzhen Tongfu Technology Co., Ltd. (“ Tongfu Technology”) August 28, 2015 PRC - Third party payment service Subsidiaries of the VIEs Shenzhen E-Sun Sky Network Technology Co., Ltd. (“E-Sun Sky Network”) * May 22, 2006 PRC - Online Lottery Service Lhasa Yicai Network Technology Co., Ltd. (“Lhasa Yicai”) ** October 17, 2014 PRC - Online Lottery Service Hainan Jingli Network Technology Co., Ltd. (“Hainan Jingli”) ** May 3, 2018 PRC - Software Service Hainan Panfeng Network Technology Co., Ltd. (“Hainan Panfeng”) ** July 18, 2018 PRC - Software Service Hangzhou E-Sun Sky Network Technology Co., Ltd. (“Hangzhou E-Sun Sky Network”) ** June 21, 2018 PRC - Software Service Shenzhen Yicai Network Technology Co., Ltd. (“Shenzhen Yicai”) *** July 21, 2015 PRC - Online Lottery Service Beijing Baifengrun Science and Technology Co., Ltd. (“ Baifengrun Technology”) **** September 13, 2011 PRC - Development, operation of Online Gaming Shenzhen Kaisheng Jinfu Enterprise Management Co., Ltd. (“Shenzhen Kaisheng”) **** June 24, 2016 PRC - Online Spot Commodity Trading Services * A subsidiary of E-Sun Network ** A subsidiary of E-Sun Sky Network *** A subsidiary of Youlanguang Technology **** A subsidiary of Guangtiandi Technology ****** A subsidiary of The Multi Group
Variable Interest Entity, Primary Beneficiary [Member]
Carrying Amounts of Assets and Liabilities, Results of Operations and Cash Flows of VIEs	As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 85,161 123,482 17,960 Restricted cash 1,237 1,253 182 Amounts due from intergroup companies 2,555 2,627 382 Prepayments and other current assets 33,692 28,934 4,209 Current assets for discontinued operations 40,193 - - Total current assets 162,838 156,296 22,733 Non-current assets: Property and equipment, net 99,138 67,349 9,796 Intangible assets, net 1,734 1,623 236 Deposits 4,248 4,484 652 Long-term investments 53,044 51,332 7,466 Other non-current assets 6,296 3,563 518 Non-current assets for discontinued operations 179,932 - - Total non-current assets 344,392 128,351 18,668 TOTAL ASSETS 507,230 284,647 41,401 LIABILITIES Current liabilities: Amounts due to intergroup companies 71,168 209,384 30,454 Accrued payroll and welfare payable 9,875 7,854 1,142 Accrued expenses and other current liabilities 51,658 54,200 7,883 Income tax payable 615 1,313 191 Current liabilities for discontinued operations 15,626 - - Total current liabilities 148,942 272,751 39,670 Non-current liabilities: Long-term payables 27,673 4,196 610 12,721 - Total non-current liabilities 40,394 4,196 610 TOTAL LIABILITIES 189,336 276,947 40,280 For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net revenues for continuing operations 5,259 22,489 20,578 2,993 Net revenues for discontinued operations 5,669 59,465 7,398 1,076 Net loss for continuing operations (9,557 ) (138,991 ) (103,383 ) (15,036 ) Net income for discontinued operations 706 14,957 2,183 317 For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net cash (used in) operating activities (50,876 ) (162,328 ) (77,280 ) (11,240 ) Net cash provided by investing activities 166,222 6,350 11,164 1,624 Net cash provided by financing activities - - 104,453 15,192

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of Property and Equipment	Category Estimated Useful Life Estimated Residual Electronics and office equipment 3-5 years 5 % Motor vehicles 5-10 years 2-5 % Leasehold improvements Shorter of lease term or the estimated useful lives of the assets -
Estimated Useful Lives of Intangible Assets	Category Estimated Useful Life Computer software 3-10 years Internet domain name 10 years Licensing agreement Agreement term Intangible assets arising from business combination Licenses and brand name 10 years Mobile applications and software 5 years

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	On February 9, 2018, the Company calculated a gain resulting from such disposition as follows: As of February 9, 2018 RMB Consideration 121,964 Cash and cash equivalents 41,699 Short-term investments 20,000 Prepayments and other receivables 6,428 Property and equipment, net 1,490 Intangible assets, net 45,847 Goodwill 130,613 Long-term investments 2,000 Other non-current assets 14 Accrued payroll and welfare payable (5,104 ) Accrued expenses and other current liabilities (756 ) Income tax payable (4,927 ) Deferred revenue (5,527 ) Deferred tax liabilities (12,554 ) Net assets of Qufan 219,223 Equity interest percentage 51 % Less: Net assets of Qufan to the Company 111,804 Gain on disposal of Qufan 10,160
Schedule Of Condensed Cash Flow Statement Of Discontinued Operations	The condensed cash flows of Qufan were as follows for the years ended December 31, 2016, 2017 and 2018: For the years ended December 31, 2016* 2017 2018** 2018** RMB RMB RMB US$ Net cash (used in) provided by operating activities (351 ) 11,010 839 122 Net cash used in investing activities - (22,000 ) - - Net cash provided by financing activities 510 52,250 - -
Schedule Of Condensed Income Statement Of Discontinued Operation	The operating results from discontinued operations included in the Company’s consolidated statements follows for the years ended December 31, 2016, 2017 and 2018: For the years ended December 31, 2016* 2017 2018** 2018** RMB RMB RMB US$ Major classes of line items constituting pretax profit of discontinued operations Net Revenues 5,669 59,465 7,398 1,074 Cost of services (1,392 ) (15,613 ) (1,885 ) (274 ) Sales and marketing (1,523 ) (13,682 ) (1,938 ) (282 ) General and administrative (280 ) (3,977 ) (443 ) (64 ) Service development expenses (854 ) (9,749 ) (688 ) (100 ) Other income and (expenses) that are not major 1 542 77 11 Income from discontinued operations, before income tax 1,621 16,986 2,521 365 Income tax expense (914 ) (1,659 ) (338 ) (49 ) Income from discontinued operations, net of 707 15,327 2,183 316 Gain on deconsolidation of the subsidiary, net of income tax - - 10,160 1,478 Net income from discontinued operations, net of 707 15,327 12,343 1,794 * Included financial results of discontinued operations from November 25, 2016 to December 31, 2016. ** Included financial results of discontinued operations from January 1, 2018 to February 9, 2018.

BUSINESS COMBINATION (Tables)

BUSINESS COMBINATION (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of acquired intangible assets have weighted average economic lives	Acquired intangible assets have weighted average economic lives from the date of purchase as follows: License 10.0 years Brand name 10.0 years Software 5.0 years
Summary of unaudited pro forma information	The following unaudited pro forma information summarizes the results of operations of the Group for the years ended December 31, 2016 and 2017, as if the acquisition had been completed on January 1, 2016. These pro forma results have been prepared for comparative purposes only and do not purport to be indicative of what operating results would have been had the acquisition actually taken place on the date indicated and may not be indicative of future operating results. The pro forma adjustments are based upon available information and certain assumptions that management believes are reasonable. For the years ended December 31, (unaudited) 2016 2016 2017 2017 EUR RMB EUR RMB Pro forma total revenues 11,686 76,893 12,188 93,334 Pro forma net income (loss) 2,519 16,576 (1,614 ) (12,360 ) Pro forma net income (loss) attributable to 500.com Limited 2,343 15,416 (1,501 ) (11,495 )
Summary of Redeemable Noncontrolling Interest	Accordingly, the carrying value of the noncontrolling interest as of December 31, 2017 and 2018 is stated as follows: EUR RMB USD Noncontrolling interest-valuation* 2,915 22,595 Total comprehensive loss attributable to noncontrolling interest in 2017 (70 ) (543 ) Redeemable noncontrolling interest as of December 31, 2017 2,845 22,052 Total comprehensive loss attributable to noncontrolling interest (413 ) (3,223 ) (469 ) Adjustment to redemption value** 1,313 10,559 1,536 Redeemable noncontrolling interest as of December 31, 2018 3,745 29,388 4,274 *Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date. ** Adjustment to redemption value including two portions: 1) the excess amount of redemption amount in excess of fair value as of December 31, 2018, 2) the difference between fair value and the carrying amount after ASC 810-10 attribution adjustment. The fair value as of December 31, 2018 was evaluated by third party appraiser on December 31, 2018. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.8473 RMB on December 31, 2018.
Multi Group [Member]
Summary of the fair values of the assets acquired and liabilities assumed at the acquisition date	The following table summarizes the fair values of the assets acquired and liabilities assumed at the acquisition date. The Group obtained a third-party valuation of certain intangible assets. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB of the acquisition date on July 17, 2017. Amount Amount Amortization Years EUR RMB License 19,400 150,377 10.0 Brand name 11,100 86,041 10.0 Software 900 6,976 5.0 Others 7,116 55,156 Total identifiable assets acquired 38,516 298,550 Deferred tax liabilities (1,164 ) (9,023 ) Other current liabilities (1,422 ) (11,022 ) Total liabilities assumed (2,586 ) (20,045 ) Net identifiable assets acquired 35,930 278,505 Noncontrolling interests # 2,915 22,595 Total Consideration 49,754 385,662 Goodwill 16,739 129,752

INVESTMENTS (Tables)

INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2018
Investments [Abstract]
Schedule of long term investments	Long-term Investments As of As of As of RMB RMB US$ Carrying amount of Equity investments at fair value without readily determinable fair value 66,237 69,357 10,088 Carrying amount of equity method investments 280,836 125,018 18,183 Carrying amount of long-term investments 347,073 194,375 28,271 Equity investments at fair value without readily determinable fair value Equity investments at fair value without readily determinable fair value consisted of the following: As of December 31 , 2017 As of December 31 , 2018 As of December 31 , 2018 RMB RMB US$ Equity investments at fair value without readily determinable fair value Private companies 47,214 49,990 7,271 Limited partnerships 22,290 22,634 3,292 Cost of Equity investments at fair value without readily determinable fair value 69,504 72,624 10,563 Impairment loss on Equity investments at fair value without readily determinable fair value (3,267 ) (3,267 ) (475 ) Carrying amount of Equity investments at fair value without readily determinable fair value 66,237 69,357 10,088 Equity method investments consisted of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Equity Method Investments Private company - 9,000 1,309 Listed company 283,655 297,938 43,333 Limited partnership 27,331 20,381 2,964 Cost of equity method investments 310,986 327,319 47,606 Impairment loss on equity investment (27,893 ) (184,377 ) (26,816 ) Loss from equity method investment (2,257 ) (17,924 ) (2,607 ) Carrying amount of equity method investments 280,836 125,018 18,183

ACCOUNTS RECEIVABLE (Tables)

ACCOUNTS RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Accounts Receivable and Related Allowance for Doubtful Accounts	Accounts receivable and the related allowance for doubtful accounts are summarized as follows: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Accounts receivable 19,847 19,847 2,887 Less: Allowance for doubtful accounts (19,847 ) (19,847 ) (2,887 ) Accounts receivable, net - - -

PREPAYMENTS, OTHER RECEIVABLE_2

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Summary of Prepayments and Other Current Assets	As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Receivables from third party payment service providers 757 9,730 1,415 Interest receivables 718 540 79 Deposit for share repurchase * 13,318 - - Deferred sponsorship and advertising expenses 1,993 1,019 148 Prepaid insurance 5,344 3,740 544 Deferred expense** 13,702 10,608 1,543 Receivables for disposal of long-term investments*** 9,322 4,332 630 Deductible value-added input tax 12,611 12,585 1,830 Others 23,551 22,644 3,294 81,316 65,198 9,483 * Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has withdrawn the repurchase and collected the deposit in Feb 2018. ** Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods. *** Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Qufan as of December 31, 2018.

PROPERTY AND EQUIPMENT, NET (Ta

PROPERTY AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Electronics and office equipment 43,315 54,615 7,943 Motor vehicles 11,804 11,893 1,730 Leasehold improvements 106,904 118,925 17,297 Property and equipment, cost 162,023 185,433 26,970 Less: Accumulated depreciation (56,521 ) (88,238 ) (12,834 ) Property and equipment, net 105,502 97,195 14,136

INTANGIBLE ASSETS, NET (Tables)

INTANGIBLE ASSETS, NET (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	Intangible assets consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Cost: Computer software 24,639 25,726 3,742 License agreement 151,177 151,177 21,988 Internet domain name 2,907 2,907 423 Brand name 86,041 86,049 12,515 264,764 265,859 38,668 Accumulated amortization: Computer software (8,058 ) (13,585 ) (1,976 ) License agreement (7,693 ) (22,730 ) (3,306 ) Internet domain name (1,808 ) (2,034 ) (296 ) Brand name (3,944 ) (12,548 ) (1,825 ) (21,503 ) (50,897 ) (7,403 ) Intangible assets, net 243,261 214,962 31,265
Schedule of Estimated Amortization Expense	Annual estimated amortization expense for each of the five succeeding years is as follows: RMB US$ 2019 29,338 4,267 2020 27,242 3,962 2021 26,123 3,799 2022 25,294 3,679 2023 and thereafter 106,965 15,558 214,962 31,265

ACCRUED EXPENSES AND OTHER CU_2

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Summary of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following: As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ Advance from end users* 35,888 44,006 6,400 Business tax and other taxes payable 4,118 4,276 623 Deferred government grant 2,807 3 - Professional fees payable 12,039 8,160 1,187 Promotional events payables 7,753 8,290 1,206 Decoration payables 5,328 3,096 450 Unpaid consideration for business combination** 54,550 - - Others 23,750 20,318 2,954 146,233 88,149 12,820 * Advance from end users represents payments received by the TMG in advance from the end users prior to the services to be provided. ** Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of USD19.4 122.0 which has been offset by the unpaid contingent consideration of RMB54.6

ACCUMULATED DEFICIT AND STATU_2

ACCUMULATED DEFICIT AND STATUTORY RESERVE (Tables)	12 Months Ended
	Dec. 31, 2018
ACCUMULATED DEFICIT AND STATUTORY RESERVE [Abstract]
Schedule of Accumulated Deficit	As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ PRC statutory reserved funds 30,882 30,882 4,491 Unreserved accumulated deficit (888,633 ) (1,340,306 ) (194,939 ) (857,751 ) (1,309,424 ) (190,448 )

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Income (Loss) before Income Taxes	2016 2017 2018 2018 RMB RMB RMB US$ Cayman Islands (179,348 ) (162,884 ) (166,710 ) (24,245 ) British Virgin Islands (31 ) (3 ) - - USA (3,809 ) (4,703 ) (4,058 ) (590 ) Hong Kong (10,524 ) (10,922 ) (7,740 ) (1,126 ) Japan - (174 ) (1,592 ) (232 ) Malta - (4,321 ) (7,949 ) (1,156 ) Curacao - 7,449 (12,752 ) (1,855 ) Cyprus - (13 ) (8 ) (1 ) Australia - - - - PRC (14,104 ) (169,923 ) (290,530 ) (42,256 ) - (207,816 ) (345,494 ) (491,339 ) (71,461 )
Schedule of Current and Deferred Components	2016 2017 2018 2018 RMB RMB RMB US$ Current tax (expense) benefit (3,553 ) 15,935 19,258 2,801 Deferred tax benefit (expense) 1,410 (1,910 ) 344 50 Income tax (expense) benefit (2,143 ) 14,025 19,602 2,851
Reconciliation of Tax Computed Applying Statutory Income Tax Rate	2016 2017 2018 2018 RMB RMB RMB US$ loss before income taxes (207,816 ) (345,494 ) (491,339 ) (71,461 ) Income tax computed at applicable tax rates (25%) (51,954 ) (86,374 ) (122,835 ) (17,866 ) Effect of different tax rates in different jurisdictions 4,743 693 979 142 Non-deductible expenses 54,588 92,960 127,291 18,514 Effect of tax rate changes (1,841 ) - - - Change in valuation allowance (5,144 ) - 1,637 238 Changes in interest and penalties on unrecognized tax position 3,105 5,098 - - Effect of EIT reversal for previous years 2,760 (19,704 ) (20,726 ) (3,014 ) Research and development super-deduction (2,947 ) (6,692 ) (5,942 ) (864 ) Others (1,167 ) (6 ) (6 ) (1 ) 2,143 (14,025 ) (19,602 ) (2,851 )
Schedule of Unrecognized Tax Benefits Reconciliation	2016 2017 2018 2018 RMB RMB RMB US$ Balance at beginning of year 42,983 38,457 24,298 3,534 Increase relating to current year tax positions 3,630 5,194 - - Decrease relating to prior year tax positions (3,204 ) (1,595 ) (7,420 ) (1,079 ) Decrease relating to expiration of applicable statute of limitations (4,952 ) (17,758 ) (14,745 ) (2,145 ) Balance at end of year 38,457 24,298 2,133 310
Components of Deferred Taxes	2017 2018 2018 RMB RMB US$ Deferred tax assets Advertising expenditure deductible in future years 61,191 63,386 9,219 Deferred revenue 307 306 45 Deferred government grants 2,417 2,417 352 Loss from equity method investment 203 203 30 Bad debt provision 5,097 5,097 741 Accrued rental expense 817 817 119 Impairment loss 1,250 1,250 182 Net operating losses (“NOLs”) 34,700 109,850 15,977 Less: valuation allowance (105,982 ) (183,326 ) (26,665 ) Total deferred tax assets, net - - - Deferred tax liabilities Apps and other licenses arisen from business combination (6,754 ) (7,744 ) (1,126 ) Total deferred tax liabilities (6,754 ) (7,744 ) (1,126 )

SHARE-BASED PAYMENT (Tables)

SHARE-BASED PAYMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of Share Option Activity and Related Information	Number of options Weighted average exercise price Weighted average grant date fair value per share Weighted average remaining contractual year Aggregated intrinsic value US$ US$ (Years) US$’000 Outstanding, January 1, 2018 41,987,560 1.04 1.18 1.59 3,986 Granted - - - - - Forfeited - - - Exercised (6,513,460 ) 0.92 1.28 Outstanding, December 31, 2018 35,474,100 1.07 1.17 0.94 2,078 Vested and expected to vest at December 31, 2018 35,248,669 1.07 1.17 0.87 1,953 Exercisable at December 31, 2018 32,524,100 1.00 1.19 0.84 2,078
Schedule of Share-Based Compensation Expenses Relating to Options Granted	For the year ended December 31, 2016 Employees Directors Total Total RMB RMB RMB US$ Cost of services 2,993 - 2,993 431 Sales and marketing 13,966 - 13,966 2,012 General and administrative 114,244 7,114 121,358 17,479 Service development expenses 25,024 - 25,024 3,604 156,227 7,114 163,341 23,526 For the year ended December 31, 2017 Employees Directors Total Total RMB RMB RMB US$ Cost of services 1,343 - 1,343 206 Sales and marketing 9,228 - 9,228 1,418 General and administrative 61,113 3,089 64,202 9,868 Service development expenses 16,370 - 16,370 2,516 88,054 3,089 91,143 14,008 For the year ended December 31, 2018 Employees Directors Total Total RMB RMB RMB US$ Cost of services 351 - 351 51 Sales and marketing 11,361 - 11,361 1,652 General and administrative 74,227 2,346 76,573 11,137 Service development expenses 20,343 - 20,343 2,959 106,282 2,346 108,628 15,799
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	For the years ended December 31 2016 2017 2018 Expected volatility 70.80%~77.52 % 54.83 % 54.27%~60.15 % Risk-free interest rate 1.13%~1.62 % 1.20 % 2.26%~2.62 % Dividend yield 0.00 % 0.00 % 0.00 % Forfeiture rate 0.00 % 0.00 % 0.00 % Suboptimal early exercise factor 2.2~2.8 2.2 2.2~2.8
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	Restricted shares granted to employees and directors Number of options Weighted average grant date fair value per share Weighted average remaining contractual year Aggregated intrinsic value US$ (Years) US$’000 Outstanding, January 1, 2018 12,580,280 0.96 9.63 12,719 Granted 5,000,000 1.41 9.49 3,790 Forfeited - - Exercised (10,503,520 ) 1.05 Outstanding, December 31, 2018 7,076,760 1.15 8.99 5,364 Vested and expected to vest at December 31, 2018 7,076,760 1.15 8.99 5,364 Exercisable at December 31, 2018 -

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Operating Lease Commitments	Operating lease commitments RMB US$ 2019 25,661 3,780 2020 26,892 3,961 2021 21,952 3,234 2022 16,499 2,430 91,004 13,405

LOSSES PER SHARE (Tables)

LOSSES PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	Basic and diluted losses per share for each of the years presented is calculated as follows: For the years ended 2016 2017 2018 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Losses per share from continuing operations—basic: Numerator: Allocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic (166,352 ) (36,974 ) (265,563 ) (59,172 ) (380,701 ) (55,371 ) (82,216 ) (11,958 ) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Denominator used for losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Losses per share from continuing operations — basic (0.49 ) (0.49 ) (0.80 ) (0.80 ) (1.13 ) (0.164 ) (1.13 ) (0.164 ) Losses per share from continuing operations—diluted: Numerator: Allocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders used in calculating loss per ordinary share— diluted (166,352 ) (36,974 ) (265,563 ) (59,172 ) (380,701 ) (55,371 ) (82,216 ) (11,958 ) Reallocation of net loss from continuing operations attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares (36,974 ) - (59,172 ) - (82,216 ) (11,958 ) - - Net loss from continuing operations attributable to ordinary shareholders (203,326 ) (36,974 ) (324,735 ) (59,172 ) (462,917 ) (67,329 ) (82,216 ) (11,958 ) Denominator: Weighted average number of ordinary shares outstanding used in calculating basic losses per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 75,442,810 - 74,400,299 - 74,400,299 74,400,299 - - Share options — - - - - - - - Denominator used for losses per share 414,872,756 75,442,810 408,310,122 74,400,299 418,911,292 418,911,292 74,400,299 74,400,299 Losses per share from continuing operations—diluted (0.49 ) (0.49 ) (0.80 ) (0.80 ) (1.13 ) (0.164 ) (1.13 ) (0.164 ) Losses from continuing operations per ADS: Denominator used for losses per ADS - basic 33,942,995 - 33,390,982 - 34,451,099 34,451,099 - - Denominator used for losses per ADS - diluted 41,487,276 - 40,831,012 - 41,891,129 41,891,129 - - Losses from continuing operations per ADS – basic (4.90 ) - (7.95 ) - (11.28 ) (1.64 ) - - Losses from continuing operations per ADS – diluted (4.90 ) - (7.95 ) - (11.28 ) (1.64 ) - -
Schedule Of Earnings Per Share Basic And Diluted From Discontinued Operations	For the years ended 2016 2017 2018 RMB RMB RMB RMB RMB US$ RMB US$ Class A Class B Class A Class B Class A Class A Class B Class B Income per share from discontinued operations—basic: Numerator: Allocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share—basic 295 66 6,245 1,391 9,247 1,345 1,997 290 Denominator: Weighted average number of ordinary shares outstanding used in calculating basic income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Denominator used for income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Income per share from discontinued operations — basic 0.001 0.001 0.02 0.02 0.03 0.004 0.03 0.004 Income per share from discontinued operations—diluted: Numerator: Allocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders used in calculating income per ordinary share— diluted 295 66 6,245 1,391 9,247 1,345 1,997 290 Reallocation of net income from discontinued operations attributable to 500.com Limited’s ordinary shareholders as a result of conversion of Class B to Class A shares 66 - 1,391 - 1,997 290 - - Net income from discontinued operations attributable to ordinary shareholders 361 66 7,636 1,391 11,244 1,635 1,997 290 Denominator: Weighted average number of ordinary shares outstanding used in calculating basic income per share 339,429,946 75,442,810 333,909,823 74,400,299 344,510,993 344,510,993 74,400,299 74,400,299 Conversion of Class B to Class A ordinary shares 75,442,810 - 74,400,299 - 74,400,299 74,400,299 - - Share options - - - - - - - - Denominator used for income per share 414,872,756 75,442,810 408,310,122 74,400,299 418,911,292 418,911,292 74,400,299 74,400,299 Losses per share from discontinued operations—diluted 0.001 0.001 0.02 0.02 0.03 0.004 0.03 0.004 Income from discontinued operations per ADS: Denominator used for income per ADS - basic 33,942,995 - 33,390,982 - 34,451,099 34,451,099 - - Denominator used for income per ADS - diluted 41,487,276 - 40,831,012 - 41,891,129 41,891,129 - - Income from discontinued operations per ADS – basic 0.01 - 0.19 - 0.27 0.04 - - Income from discontinued operations per ADS – diluted 0.01 - 0.19 - 0.27 0.04 - -

FAIR VALUE MEASUREMENT (Tables)

FAIR VALUE MEASUREMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Summary of assets measured or disclosed at fair value	Fair value measurement at December 31, 2017 Total fair value at December 31, 2017 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 289,304 44,465 - 289,304 - - - Adjustable-rate investments 89,604 13,772 - 89,604 - - - Total 378,908 58,237 - 378,908 - - - Fair value measurement Recurring Short-term investments Investment in targeted asset management plan with fixed rate (Note 6) 100,000 15,370 - 100,000 - - - Available-for-sale investments - - - - - 733 113 Non-recurring Long-term investments - - - - - 28,781 4,424 Total assets measured at fair value 100,000 15,370 - 100,000 - 29,514 4,537 Fair value measurement Recurring Contingent consideration payable 54,550 8,384 - - 54,550 2,384 366 Total liabilities measured at fair value 54,550 8,384 - - 54,550 2,384 366 Assets and liabilities measured or disclosed at fair value are summarized below: Fair value measurement at December 31, 2018 Total fair value at December 31, 2018 Quoted prices in active markets for identical assets (Level 1) Significant other observable inputs (Level 2) Significant unobservable inputs (Level 3) Total losses RMB US$ RMB RMB RMB RMB US$ Fair value disclosure Cash equivalents Fixed-rate investments 246,560 35,861 - 246,560 - - - Adjustable-rate investments 27,580 4,011 - 27,580 - - - Total 274,140 39,872 - 274,140 - - - Fair value measurement Recurring Short-term investments Investment in targeted asset management plan with fixed rate (Note 6) 100,000 14,544 - 100,000 - - - Available-for-sale investments - - - - - - - Non-recurring Long-term investments 98,391 14,310 98,391 - - 149,896 21,801 Total assets measured at fair value 198,391 28,854 98,391 100,000 - 149,896 21,801 Fair value measurement Recurring Contingent consideration payable - - - - - - - Total liabilities measured at fair value - - - - - - - There were no transfers of fair value measurements into or out of Level 3 for the years ended December 31, 2016, 2017 and 2018. The Group has measured the contingent consideration payable at fair value on a recurring basis using significant unobservable inputs (Level 3) as of the years ended December 31, 2017. The significant unobservable inputs used in the fair value measurement and the corresponding impacts to the fair values are presented below:
Significant unobservable inputs used in the fair value measurement and the corresponding impacts	Valuation techniques Unobservable inputs Estimation as of December 31, 2017 Change in unobservable inputs Change in fair value Contingent consideration payable Monte Carlo simulation technique Spot value of net income 31,698 Increase / (decrease) Increase / (decrease) Volatility of net income 10.00 % Increase / (decrease) (Decrease) / increase Expected annual growth rate of net income 0.00 % Increase / (decrease) Increase / (decrease) Discount factor 0.95 Increase / (decrease) (Decrease) / increase
Reconciliation of liabilities measured at fair value on a recurring basis using significant unobservable inputs	Contingent consideration payable RMB Balance as of December 31, 2015 - Recognized during the year 52,240 Balance as of December 31, 2016 52,240 Recognized during the year 2,310 Balance as of December 31, 2017 54,550 Settled during the year (54,550 ) Balance as of December 31, 2018 - Balance as of December 31, 2018 in US$ -

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following table presents summary information by segment for the years ended December 31, 2016, 2017 and 2018, respectively. For the year ended December 31, 2016 PRC Europe Total RMB RMB RMB Net Revenues 5,259 - 5,259 Depreciation and Amortization 18,518 - 18,518 Operating loss from continuing operations 368,183 - 368,183 Interest income 23,859 - 23,859 Income tax expense 2,143 - 2,143 Segment net loss from continuing operations 209,959 - 209,959 Segment assets 2,063,328 - 2,063,328 For the year ended December 31, 2017 PRC Europe Total RMB RMB RMB Net Revenues 22,488 49,370 71,858 Depreciation and Amortization 12,814 14,062 26,876 Operating (loss) income from continuing operations (341,286 ) 2,755 (338,531 ) Interest income 20,032 - 20,032 Income tax (benefit) expense (14,181 ) 156 (14,025 ) Segment net (loss) income from continuing operations (334,428 ) 2,959 (331,469 ) Segment assets 1,696,024 58,535 1,754,559 For the year ended December 31, 2018 PRC Europe Total Total RMB RMB RMB US$ Net Revenues 20,578 105,511 126,089 18,339 Depreciation and Amortization 31,027 31,511 62,538 9,096 Operating loss from continuing operations 327,850 16,638 344,488 50,103 Interest income 15,308 - 15,308 2,226 Income tax (benefit) expense (21,014 ) 1,412 (19,602 ) (2,851 ) Segment net loss from continuing operations 453,687 18,050 471,737 68,610 Segment assets 1,204,057 42,527 1,246,584 181,307

CONDENSED FINANCIAL INFORMATI_2

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Condensed Balance Sheets	As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ ASSETS Current assets: Cash and cash equivalents 1,304 12,338 1,795 Time deposits - - - Other current assets 20,257 7,348 1,069 Amounts due from intergroup companies 400,659 506,418 73,656 Total current assets 422,220 526,104 76,520 Non-current assets: Investment in subsidiaries and VIEs 1,060,273 605,167 88,018 Property and equipment, net 241 167 24 Total non-current assets 1,060,514 605,334 88,042 TOTAL ASSETS 1,482,734 1,131,438 164,562 As of December 31, 2017 As of December 31, 2018 As of December 31, 2018 RMB RMB US$ LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities: Accrued payroll and welfare payable 544 369 54 Accrued expenses and other liabilities 68,015 9,452 1,375 Amounts due to intergroup companies 4,401 5,012 729 Total current liabilities 72,960 14,833 2,158 TOTAL LIABILITIES 72,960 14,833 2,158 Shareholders’ equity: Class A Ordinary shares, par value US$0.00005 per share, 700,000,000 shares authorized as of December 31, 2016 and 2017; 333,787,552 and 350,804,532 shares issued and outstanding as of December 31, 2017 and 2018, respectively 115 121 18 Class B Ordinary shares, par value US$0.00005 per share; 300,000,000 shares authorized as of December 31, 2017 and 2018; 74,400,299 and 74,400,299 shares issued and outstanding as of December 31,2017 and 2018, respectively 28 28 4 Additional paid-in capital 2,295,111 2,431,924 353,709 Treasury shares (143,780 ) (143,780 ) (20,912 ) Accumulated other comprehensive income 116,051 137,736 20,033 Accumulated deficit and statutory reserve (857,751 ) (1,309,424 ) (190,448 ) Total shareholder’s equity 1,409,774 1,116,605 162,404 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY 1,482,734 1,131,438 164,562
Schedule of Condensed Statements of Comprehensive Income (loss)	For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net Revenues - - - - Operating expenses: Sales and marketing (402 ) (497 ) (1,784 ) (259 ) General and administrative (15,934 ) (68,260 ) (177,455 ) (25,810 ) Total operating expenses (16,336 ) (68,757 ) (179,239 ) (26,069 ) Indemnity cost (9,979 ) - - - Other operating income 39 - - - Operating loss (26,276 ) (68,757 ) (179,239 ) (26,069 ) Interest income 10,269 4,818 2 - Equity in (loss) profits of subsidiaries and VIEs (186,958 ) (253,160 ) (272,436 ) (39,623 ) Loss before income tax (202,965 ) (317,099 ) (451,673 ) (65,692 ) Income tax benefit - - - - Net loss (202,965 ) (317,099 ) (451,673 ) (65,692 ) Other comprehensive income Foreign currency translation gain (loss) 82,347 (56,196 ) 21,685 3,155 Change in fair value of AFS 754 (733 ) - - Comprehensive loss (119,864 ) (374,028 ) (429,988 ) (62,537 )
Schedule of Condensed Statements of Cash Flows	For the years ended December 31, 2016 2017 2018 2018 RMB RMB RMB US$ Net cash provided (used in) by operating activities 25,679 (270,965 ) (91,547 ) (13,315 ) Net cash provided (used in) by investing activities 413,401 3,065 (56,941 ) (8,282 ) Net cash (used in) provided by financing activities (118,484 ) (11,945 ) 159,456 23,192 Effect of exchange rate changes on cash and cash equivalents 481 (60,522 ) 66 10 Net increase (decrease) in cash and cash equivalents 321,077 (340,367 ) 11,034 1,605 Cash and cash equivalents at beginning of the year 20,594 341,671 1,304 190 Cash and cash equivalents at end of the year 341,671 1,304 12,338 1,795

ORGANIZATION (Schedule of Varia

ORGANIZATION (Schedule of Variable Interest Entity) (Details)	12 Months Ended
	Dec. 31, 2018
BVI [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Feb. 9, 2011
Place of establishment	British Virgin Islands
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500wan HK [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Mar. 8, 2011
Place of establishment	Hong Kong
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500.com USA [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 21, 2014
Place of establishment	USA
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
500.com UK [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 5, 2016
Place of establishment	UK
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
E-Sun Sky Computer [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 18, 2007
Place of establishment	PRC
Percentage of ownership by the Company	100.00%
Principal activities	Software Service
E-Sun Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 7, 1999
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Youlanguang Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 16, 2008
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Guangtiandi Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 16, 2008
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Online Lottery Service
Tongfu Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 28, 2015
Place of establishment	PRC
Percentage of ownership by the Company	0.00%
Principal activities	Third party payment service
E-Sun Sky Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 22, 2006	[1]
Place of establishment	PRC	[1]
Percentage of ownership by the Company	0.00%	[1]
Principal activities	Online Lottery Service	[1]
Lhasa Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Oct. 17, 2014	[2]
Place of establishment	PRC	[2]
Percentage of ownership by the Company	0.00%	[2]
Principal activities	Online Lottery Service	[2]
Shenzhen Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 21, 2015	[3]
Place of establishment	PRC	[3]
Percentage of ownership by the Company	0.00%	[3]
Principal activities	Online Lottery Service	[3]
Baifengrun Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 13, 2011	[4]
Place of establishment	PRC	[4]
Percentage of ownership by the Company	0.00%	[4]
Principal activities	Development, operation of Online Gaming	[4]
Shenzhen Kaisheng [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 24, 2016	[4]
Place of establishment	PRC	[4]
Percentage of ownership by the Company	0.00%	[4]
Principal activities	Online Spot Commodity Trading Services	[4]
500.com Nihon Co.,Ltd. ("500.com JP") [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 27, 2017
Place of establishment	Japan
Percentage of ownership by the Company	100.00%
Principal activities	Investment Holding
The Muliti Group Ltd The Multi Group" [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 26, 2015
Place of establishment	Malta
Percentage of ownership by the Company	93.00%
Principal activities	Investment Holding
Multi Warehouse Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 3, 2014	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Multi Brand Gaming Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Oct. 3, 2014	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Multilotto UK Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 1, 2016	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Lotto Warehouse Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Sep. 1, 2016	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Wasp Media Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 12, 2016	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Round Spot Services Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 6, 2015	[5]
Place of establishment	Cyprus	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Multi Pay N.V [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Aug. 25, 2011	[5]
Place of establishment	Curacao	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Multilotto Australia PTY Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Dec. 13, 2016	[5]
Place of establishment	Australia	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Hainan Menghuanxingchen [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 3, 2018
Place of establishment	PRC
Percentage of ownership by the Company	100.00%
Principal activities	Software Service
Oddson Europe Ltd [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jan. 10, 2018	[5]
Place of establishment	Malta	[5]
Percentage of ownership by the Company	93.00%	[5]
Principal activities	Online Gaming	[5]
Hainan Jingli [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	May 3, 2018	[2]
Place of establishment	PRC	[2]
Percentage of ownership by the Company	0.00%	[2]
Principal activities	Software Service	[2]
Hainan Panfeng [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jul. 18, 2018	[2]
Place of establishment	PRC	[2]
Percentage of ownership by the Company	0.00%	[2]
Principal activities	Software Service	[2]
Hangzhou ESun Sky Network [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity And Subsidiaries [Line Items]
Date of establishment	Jun. 21, 2018	[2]
Place of establishment	PRC	[2]
Percentage of ownership by the Company	0.00%	[2]
Principal activities	Software Service	[2]
[1]	A subsidiary of E-Sun Network
[2]	A subsidiary of E-Sun Sky Network
[3]	A subsidiary of Youlanguang Technology
[4]	A subsidiary of Guangtiandi Technology
[5]	A subsidiary of The Multi Group

ORGANIZATION (Carrying Amounts

ORGANIZATION (Carrying Amounts of Assets and Liabilities of VIEs) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Current assets:
Cash and cash equivalents	¥ 435,133	$ 63,287	¥ 487,266
Restricted cash	1,254	182	1,238
Prepayments and other current assets	65,198	9,483	81,316
Total current assets	601,585	87,496	737,022
Non-current assets:
Property and equipment, net	97,195	14,136	105,502
Intangible assets, net	214,962	31,265	243,261
Deposits	5,152	749	5,750
Long-term investments	194,375	28,271	347,073
Other non-current assets	3,563	518	6,257
Total non-current assets	644,999	93,811	1,017,537
TOTAL ASSETS	1,246,584	181,307	1,754,559	¥ 2,063,328
Current liabilities:
Accrued payroll and welfare payable	9,779	1,422	11,855
Accrued expenses and other current liabilities	88,149	12,820	146,233
Income tax payable	1,766	257	2,223
Total current liabilities	99,694	14,499	175,937
Non-current liabilities:
Long-term payables	4,196	610	27,785
Non-Current liabilities for discontinued operations	0	0	12,721
Total non-current liabilities	11,940	1,736	47,260
TOTAL LIABILITIES	111,634	16,235	223,197
Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	123,482	17,960	85,161
Restricted cash	1,253	182	1,237
Amounts due from intergroup companies	2,627	382	2,555
Prepayments and other current assets	28,934	4,209	33,692
Current assets for discontinued operations	0	0	40,193
Total current assets	156,296	22,733	162,838
Non-current assets:
Property and equipment, net	67,349	9,796	99,138
Intangible assets, net	1,623	236	1,734
Deposits	4,484	652	4,248
Long-term investments	51,332	7,466	53,044
Other non-current assets	3,563	518	6,296
Non-current assets for discontinued operations	0	0	179,932
Total non-current assets	128,351	18,668	344,392
TOTAL ASSETS	284,647	41,401	507,230
Current liabilities:
Amounts due to intergroup companies	209,384	30,454	71,168
Accrued payroll and welfare payable	7,854	1,142	9,875
Accrued expenses and other current liabilities	54,200	7,883	51,658
Income tax payable	1,313	191	615
Current liabilities for discontinued operations	0	0	15,626
Total current liabilities	272,751	39,670	148,942
Non-current liabilities:
Long-term payables	4,196	610	27,673
Non-Current liabilities for discontinued operations	0	0	12,721
Total non-current liabilities	4,196	610	40,394
TOTAL LIABILITIES	¥ 276,947	$ 40,280	¥ 189,336

ORGANIZATION (Results of Operat

ORGANIZATION (Results of Operations of VIEs) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Variable Interest Entity [Line Items]
Net revenues for continuing operations	¥ 126,089	$ 18,339	¥ 71,858	¥ 5,259
Net loss for continuing operations	(471,737)	(68,610)	(331,469)	(209,959)
Net income for discontinued operations	12,343	1,794	15,327	707
VIEs [Member]
Variable Interest Entity [Line Items]
Net revenues for continuing operations	20,578	2,993	22,489	5,259
Net revenues for discontinued operations	7,398	1,076	59,465	5,669
Net loss for continuing operations	(103,383)	(15,036)	(138,991)	(9,557)
Net income for discontinued operations	2,183	317	14,957	706
Net cash (used in) operating activities	(77,280)	(11,240)	(162,328)	(50,876)
Net cash provided by investing activities	11,164	1,624	6,350	166,222
Net cash provided by financing activities	¥ 104,453	$ 15,192	¥ 0	¥ 0

ORGANISATION (Narrative) (Detai

ORGANISATION (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Shenzhen Esun Sky Network Technology Co Ltd [Member] | Variable Interest Entity (VIE) or Potential VIE, Information Unavailability [Member]
Variable Interest Entity, Financial or Other Support, Amount	$ 15.8

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment) (Details)	12 Months Ended
	Dec. 31, 2018
Electronics and office equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Residual, Percentage	5.00%
Electronics and office equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Electronics and office equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Motor vehicles [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Estimated Residual, Percentage	2.00%
Motor vehicles [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	10 years
Estimated Residual, Percentage	5.00%
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements, Estimated Useful Life	Shorter of lease term or the estimated useful lives of the assets
Estimated Residual, Percentage	0.00%

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Estimated Useful Lives of Intangible Assets) (Details)	12 Months Ended
	Dec. 31, 2018
Computer software [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Computer software [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Internet domain name [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
License agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
License agreement, Estimated Useful Life	Agreement term
Mobile applications and software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Summary Of Accounting Policies [Line Items]
Cash and cash equivalents, maturities	three months or less	three months or less
Time deposits, maturity	greater than three months but less than a year	greater than three months but less than a year
Advertising costs	¥ 2,400	$ 300	¥ 1,000	¥ 300
Capital lease terms	For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date.	For the lessee, a lease is a capital lease if any of the following conditions exist: a) ownership is transferred to the lessee by the end of the lease term, b) there is a bargain purchase option, c) the lease term is at least 75% of the properties estimated remaining economic life or d) the present value of the minimum lease payments at the beginning of the lease term is 90% or more of the fair value of the leased property to the lessor at the inception date.
Income Tax Examination, Likelihood of Unfavorable Settlement	tax position if a tax return position or future tax position is "more likely than not" to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the "more likely than not" recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement.	tax position if a tax return position or future tax position is "more likely than not" to be sustained upon examination based solely on the technical merits of the position. Tax positions that meet the "more likely than not" recognition threshold are measured at the largest amount of tax benefit, determined on a cumulative probability basis, that has a greater than fifty percent likelihood of being realized upon settlement.
Other than Temporary Impairment Losses, Investments	¥ 149,896	$ 21,801	28,781	3,440
Account Handling Expenses	6,800	1,000	2,900	600
Server Leasing and Maintenance Expenses	6,100	900	8,200	8,300
Lottery Insurance Expenses	20,400	3,000	7,000
Platform Fee	12,100	1,800	4,500
Regulatory and compliance Fees	2,000	300	600
Amortization of intangible assets	32,910	4,787	26,102	6,846
Cost of Services [Member]
Summary Of Accounting Policies [Line Items]
Amortization of intangible assets	¥ 31,500	$ 4,600	¥ 13,700	¥ 3,000
China, Yuan Renminbi [Member]
Summary Of Accounting Policies [Line Items]
Currency exchange rate	6.8755	6.8755
United States of America, Dollars [Member]
Summary Of Accounting Policies [Line Items]
Currency exchange rate	1	1

CONCENTRATION OF RISKS (Narrati

CONCENTRATION OF RISKS (Narrative) (Details)	Apr. 03, 2015	Oct. 31, 2012
Concentration Risk [Line Items]
Number of entities approved by the MOF to conduct online sales of sports lottery products		2
Number of competent government authorities who jointly released a public bulletin with regard to online lottery sales	8

DISCONTINUED OPERATIONS (Gain R

DISCONTINUED OPERATIONS (Gain Resulting From Such Disposition) (Details) - Qufan [Member] ¥ in Thousands	Feb. 09, 2018CNY (¥)
Consideration	¥ 121,964
Cash and cash equivalents	41,699
Short-term investments	20,000
Prepayments and other receivables	6,428
Property and equipment, net	1,490
Intangible assets, net	45,847
Goodwill	130,613
Long-term investments	2,000
Other non-current assets	14
Accrued payroll and welfare payable	(5,104)
Accrued expenses and other current liabilities	(756)
Income tax payable	(4,927)
Deferred revenue	(5,527)
Deferred tax liabilities	(12,554)
Net assets of Qufan	¥ 219,223
Equity interest percentage	51.00%
Less: Net assets of Qufan attributable to the Company	¥ 111,804
Gain on disposal of Qufan	¥ 10,160

DISCONTINUED OPERATIONS (The Co

DISCONTINUED OPERATIONS (The Condensed Cash Flows Of Qufan) (Details) - Qufan [Member] ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	[1]	Dec. 31, 2018USD ($)	[1]	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	[2]
Net cash (used in) provided by operating activities	¥ 839		$ 122		¥ 11,010	¥ (351)
Net cash used in investing activities	0		0		(22,000)	0
Net cash provided by financing activities	¥ 0		$ 0		¥ 52,250	¥ 510
[1]	Included financial results of discontinued operations from January 1, 2018 to February 9, 2018.
[2]	Included financial results of discontinued operations from November 25, 2016 to December 31, 2016.

DISCONTINUED OPERATIONS (The Op

DISCONTINUED OPERATIONS (The Operating Results From Discontinued Operations) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Major classes of line items constituting pretax profit of discontinued operations
Gain on deconsolidation of the subsidiary, net of income tax	¥ 10,160	$ 1,478	¥ 0	¥ 0
Net income from discontinued operations, net of income tax	12,343	1,794	15,327	707
Qufan [Member]
Major classes of line items constituting pretax profit of discontinued operations
Net Revenues	7,398	1,074	59,465	5,669
Cost of services	(1,885)	(274)	(15,613)	(1,392)
Sales and marketing	(1,938)	(282)	(13,682)	(1,523)
General and administrative	(443)	(64)	(3,977)	(280)
Service development expenses	(688)	(100)	(9,749)	(854)
Other income and (expenses) that are not major	77	11	542	1
Income from discontinued operations, before income tax	2,521	365	16,986	1,621
Income tax expense	(338)	(49)	(1,659)	(914)
Income from discontinued operations, net of income tax	2,183	316	15,327	707
Gain on deconsolidation of the subsidiary, net of income tax	10,160	1,478	0	0
Net income from discontinued operations, net of income tax	¥ 12,343	$ 1,794	¥ 15,327	¥ 707

DISCONTINUED OPERATIONS (Narrat

DISCONTINUED OPERATIONS (Narrative) (Details) - Feb. 09, 2018 - Qufan [Member] ¥ in Millions, $ in Millions	CNY (¥)	USD ($)
Disposal Group, Including Discontinued Operation, Consideration	¥ 122	$ 19.4
Discontinued Operation Percentage of Equity Interest Disposed	51.00%

BUSINESS COMBINATION (Summary o

BUSINESS COMBINATION (Summary of Fair Values of Assets Acquired and Liabilities) (Details) € in Thousands, ¥ in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018CNY (¥)	Dec. 31, 2018EUR (€)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2017CNY (¥)
Goodwill		¥ 129,752		$ 18,872		¥ 129,752
Multi Group [Member]
Others		55,156			€ 7,116
Total identifiable assets acquired		298,550			38,516
Deferred tax liabilities		(9,023)			(1,164)
Other current liabilities		(11,022)			(1,422)
Total liabilities assumed		(20,045)			(2,586)
Net identifiable assets acquired		278,505			35,930
Noncontrolling interests	[1]	22,595			2,915
Total Consideration		385,662	€ 49,754
Goodwill		129,752			16,739
License [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles		¥ 150,377			19,400
Amortization Years		10 years	10 years
Brand name [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles		¥ 86,041			11,100
Amortization Years		10 years	10 years
Software [Member] | Multi Group [Member]
Business Combination, Finite-Lived Intangibles		¥ 6,976			€ 900
Amortization Years		5 years	5 years
[1]	In accordance with the acquisition agreement, the Group is obligated to purchase the remaining 7% equity interest of The Multi Group at the option of the non-controlling shareholder, which is outside the control of the Group (upon the occurrence of an event that is not solely within the control of the issuer). As such, the noncontrolling interest relating to this portion of put options was presented as redeemable noncontrolling interest in mezzanine equity and be initially measured at its fair value in accordance with ASC 480-10-S99-3A.

BUSINESS COMBINATION (Carrying

BUSINESS COMBINATION (Carrying Value of Noncontrolling Interest) (Details) € in Thousands, ¥ in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2017EUR (€)
Total comprehensive loss attributable to noncontrolling interest		¥ (6,383)	$ (928)		¥ 1,348		¥ (6,287)
Redeemable noncontrolling interest		29,388			22,052			$ 4,274
Multi Group [Member]
Noncontrolling interest-valuation	[1]	22,595								€ 2,915
Total comprehensive loss attributable to noncontrolling interest		(3,223)	(469)	€ (413)	(543)	€ (70)
Adjustment to redemption value	[2]	10,559	$ 1,536	€ 1,313
Redeemable noncontrolling interest		¥ 29,388			¥ 22,052			$ 4,274	€ 3,745	€ 2,845
[1]	Noncontrolling interest in EUR was evaluated by third party appraiser as of the acquisition day. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.7514 RMB at the acquisition date.
[2]	Adjustment to redemption value including two portions: 1) the excess amount of redemption amount in excess of fair value as of December 31, 2018, 2) the difference between fair value and the carrying amount after ASC 810-10 attribution adjustment. The fair value as of December 31, 2018 was evaluated by third party appraiser on December 31, 2018. The calculation of RMB amount was based on the exchange rate of 1.00 EUR to 7.8473 RMB on December 31, 2018.

BUSINESS COMBINATION (Schedule

BUSINESS COMBINATION (Schedule of acquired intangible assets have weighted average economic lives) (Details) - Multi Group [Member]	12 Months Ended
	Dec. 31, 2018
License [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	10 years
Brand name [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	10 years
Software [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average lives	5 years

BUSINESS COMBINATION (Summary_2

BUSINESS COMBINATION (Summary of Unaudited Pro forma Information) (Details) - Multi Group [Member] € in Thousands, ¥ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)	Dec. 31, 2017EUR (€)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016EUR (€)
Business combination [Line Items]
Pro forma total revenues	¥ 93,334	€ 12,188	¥ 76,893	€ 11,686
Pro forma net income (loss)	(12,360)	(1,614)	16,576	2,519
Pro forma net income (loss) attributable to 500.com Limited	¥ (11,495)	€ (1,501)	¥ 15,416	€ 2,343

BUSINESS COMBINATION (Narrative

BUSINESS COMBINATION (Narrative) (Details) € in Thousands, ¥ in Thousands	Jan. 01, 2019EUR (€)	May 08, 2017CNY (¥)	Jul. 17, 2017EUR (€)	Dec. 31, 2018CNY (¥)	Dec. 31, 2018EUR (€)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017EUR (€)
Business Acquisition [Line Items]
Long-term sustainable growth rate (as a percent)						0.00%	0.00%
Fair Values Assumptions Expected Volatility Rate						10.00%	10.00%
Fair Value Of Non Controlling Interest					€ 2,915
Redeemable Noncontrolling Interest, Equity, Redemption Value					€ 3,745
Percentage of Shares subject to Repurchase	7.00%
Value of Shares Subject to Repurchase	€ 3,745
Daguoxiaoxian [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired		70.00%
Business Combination, Consideration Transferred | ¥		¥ 2,000
The Multi Group [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired			93.00%
Ownership percentage					7.00%	7.00%	7.00%
Discount rate (as a percent)			16.00%	17.50%	17.50%
Long-term sustainable growth rate (as a percent)			2.00%	2.00%	2.00%
Contributed revenues to the Group				¥ 105,511	€ 13,507	¥ 49,370	€ 6,447
Payments to Acquire Businesses, Gross			€ 49,754
Business Combination, Consideration Transferred			€ 49,800
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value					€ 2,504
Noncontrolling Interest, Ownership Percentage by Parent					7.00%
Fair Values Assumptions Expected Volatility Rate			3.00%	5.50%	5.50%
Business Combination, Separately Recognized Transactions, Net Gains and Losses				¥ 18,050	€ 2,311	2,959	€ 386
Foreign Currency Exchange Rate, Translation			7.7514		7.8473
The Multi Group [Member] | General and Administrative Expense [Member]
Business Acquisition [Line Items]
Acquisition-related costs | ¥						¥ 18,766

INVESTMENTS - (Schedule of Long

INVESTMENTS - (Schedule of Long-term Investments) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Carrying amount of Equity investments at fair value without readily determinable fair value	¥ 69,357	$ 10,088	¥ 66,237
Carrying amount of equity method investments	125,018	18,183	280,836
Carrying amount of long-term investments	¥ 194,375	$ 28,271	¥ 347,073

INVESTMENTS (Schedule of Invest

INVESTMENTS (Schedule of Investments Categorized by Investment Class) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)
Cost method and equity method investments
Impairment loss on equity investment	¥ (149,896)	$ (21,801)	¥ (28,781)	¥ 0
Loss from equity method investment	(15,025)	(2,185)	(2,128)	¥ (406)
Carrying amount of equity method investments	125,018		280,836		$ 18,183
Equity investments at fair value without readily determinable fair value Aggregated Cost	49,990		47,214		7,271
Impairment loss on Equity investments at fair value without readily determinable fair value	(3,267)	(475)	(3,267)
Carrying amount of Equity investments at fair value without readily determinable fair value	69,357		66,237		10,088
Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	327,319		310,986		47,606
Impairment loss on equity investment	(184,377)	(26,816)	(27,893)
Loss from equity method investment	(17,924)	(2,607)	(2,257)
Carrying amount of equity method investments	125,018		280,836		18,183
Equity Method Investments Fair Value [Member]
Cost method and equity method investments
Equity investments at fair value without readily determinable fair value Aggregated Cost	72,624		69,504		10,563
Impairment loss on Equity investments at fair value without readily determinable fair value	(3,267)	$ (475)	(3,267)
Carrying amount of Equity investments at fair value without readily determinable fair value	69,357		66,237		10,088
Private company [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	9,000		0		1,309
Private company [Member] | Equity Method Investments Fair Value [Member]
Cost method and equity method investments
Equity investments at fair value without readily determinable fair value Aggregated Cost	49,990		47,214		7,271
Limited partnership [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	20,381		27,331		2,964
Limited partnership [Member] | Equity Method Investments Fair Value [Member]
Cost method and equity method investments
Equity investments at fair value without readily determinable fair value Aggregated Cost	22,634		22,290		3,292
Listed Company [Member] | Equity Method Investments [Member]
Cost method and equity method investments
Cost of equity method investments	¥ 297,938		¥ 283,655		$ 43,333

INVESTMENTS (Narrative) (Detail

INVESTMENTS (Narrative) (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands, $ in Millions	1 Months Ended	12 Months Ended
	Jun. 30, 2017shares	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)	May 31, 2018CNY (¥)	Dec. 31, 2017USD ($)	Jun. 06, 2017USD ($)	Jun. 06, 2017HKD ($)$ / shares	Mar. 31, 2017USD ($)	Feb. 28, 2017	Dec. 31, 2016USD ($)	Nov. 30, 2016USD ($)	Jun. 30, 2016CNY (¥)	Dec. 31, 2015USD ($)	Aug. 31, 2015CNY (¥)	Aug. 31, 2015USD ($)	Jun. 30, 2015CNY (¥)	Apr. 30, 2015	Mar. 31, 2015USD ($)	Jun. 30, 2014USD ($)
Investments [Line Items]
Equity Method Investments		¥ 125,018		¥ 280,836		$ 18,183
Equity Method Investment, Other than Temporary Impairment		149,896	$ 21,801	28,781	¥ 0
Income (Loss) from Equity Method Investments		(15,025)	(2,185)	(2,128)	¥ (406)
Short-term Investments		100,000		100,000		14,544
Equity investments at fair value without readily determinable fair value Aggregated Cost		49,990		47,214		$ 7,271
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount		3,267	475	3,267
Limited partnership [Member] | Guangda Sports Culture [Member]
Investments [Line Items]
Equity Method Investment, Ownership Percentage																					9.90%
Equity Method Investments																	$ 20,000
Income (Loss) from Equity Method Investments		2,833	412	341
Hzone Holiding Company [Member] | Private company [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost																						$ 2,000
Percentage of Equity Securities Without Readily Determinable Fair Value																						10.00%
Big Stomach Limited [Member]
Investments [Line Items]
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | ¥		¥ 3,267
Big Stomach Limited [Member] | Private company [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost																						$ 500
Percentage of Equity Securities Original Cost Without Readily Determinable Fair Value																						2.00%
Topgame Global Limited [Member] | Private company [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost																			$ 1,373
Percentage of Equity Securities Without Readily Determinable Fair Value																		1.29%	1.29%
Caicaihudong (Beijing) Technology Co., Ltd [Member] | Private company [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost | ¥																		¥ 13
Percentage of Equity Securities Without Readily Determinable Fair Value																		1.29%	1.29%
Youwang Technology (Shanghai) Co., Ltd. [Member] | Private company [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost | ¥																		¥ 477
Danhua [Member] | Limited partnership [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost																							$ 1,000
Percentage of Equity Securities Without Readily Determinable Fair Value																							1.10%
Beijing Weisaishidai Sports Technology Co., Ltd [Member]
Investments [Line Items]
Amount of original cost of cost method investments | ¥																¥ 10,000
Beijing Weisaishidai Sports Technology Co., Ltd [Member] | Private company [Member]
Investments [Line Items]
Percentage of Equity Securities Without Readily Determinable Fair Value		0.83%				0.83%										0.84%
Techelix Co., Ltd [Member] | Private company [Member]
Investments [Line Items]
Amount of original cost of cost method investments															$ 600
Equity Method Investments							$ 50
Percentage of Equity Securities Without Readily Determinable Fair Value		1.98%				1.98%									2.00%
Techelix Co., Ltd [Member] | Private company [Member] | Third Party [Member]
Investments [Line Items]
Amount of original cost of cost method investments															$ 300
zPark [Member] | Private company [Member]
Investments [Line Items]
Partners' Capital Account, Return of Capital			15
zPark [Member] | Limited partnership [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost														$ 1,000
Percentage of Equity Securities Without Readily Determinable Fair Value		1.75%				1.75%								2.00%
Dividend Income, Equity Securities, Operating			28
Cheerful Interactive Limited [Member]
Investments [Line Items]
Cost Method Investments												$ 1,250
Cheerful Interactive Limited [Member] | Private company [Member]
Investments [Line Items]
Percentage of Equity Securities Without Readily Determinable Fair Value		3.92%				3.92%						5.00%
Loto Interactive Limited [Member] | Limited partnership [Member]
Investments [Line Items]
Equity Method Investment, Other than Temporary Impairment		¥ 149,896	21,801	28,781
Income (Loss) from Equity Method Investments		15,025	2,185	2,128
Loto Interactive Limited [Member] | Listed Company [Member]
Investments [Line Items]
Equity Method Investment, Ownership Percentage										40.65%	40.65%
Equity Method Investments										$ 41,300	$ 322.2
Shares Issued, Price Per Share | $ / shares											$ 0.252
Loto Interactive Limited [Member] | Listed Company [Member] | The Sale Shares [Member]
Investments [Line Items]
Equity Method Investment, Shares Acquired | shares	1,278,714,329
Loto Interactive Limited [Member] | Publicly listed company [Member]
Investments [Line Items]
Income (Loss) from Equity Method Investments		12,233	1,779	¥ 2,469
Sparkland Venture Capital Growth Fund L.P [Member]
Investments [Line Items]
Income (Loss) from Equity Method Investments		323	47
Sparkland Venture Capital Growth Fund L.P [Member] | Limited partnership [Member]
Investments [Line Items]
Equity Method Investment, Ownership Percentage													6.67%
Equity Method Investments									$ 1,000
Shenzhen Jinyingzaixian Technology Service Limited [Member] | Private company [Member]
Investments [Line Items]
Cost Method Investments | ¥								¥ 9,000
Equity Method Investment, Ownership Percentage								45.00%
Loss on Sale of Investments		(5,948)	$ (865)
Beijing Heimatuoxin Venture Capital LP [Member] | Limited partnership [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost | ¥																				¥ 3,000
Percentage of Equity Securities Without Readily Determinable Fair Value																				3.49%
Dividend Income, Equity Securities, Operating | ¥		587
Partners' Capital Account, Return of Capital | ¥		¥ 120
Jingyan [Member] | Limited partnership [Member]
Investments [Line Items]
Equity investments at fair value without readily determinable fair value Aggregated Cost | ¥																¥ 6,000
Percentage of Equity Securities Without Readily Determinable Fair Value		4.31%				4.31%										4.64%

ACCOUNTS RECEIVABLE (Details)

ACCOUNTS RECEIVABLE (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Accounts receivable	¥ 19,847	$ 2,887	¥ 19,847
Less: Allowance for doubtful accounts	(19,847)	(2,887)	(19,847)
Accounts receivable, net	¥ 0	$ 0	¥ 0

PREPAYMENTS, OTHER RECEIVABLE_3

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Summary of Prepayments and Other Current Assets) (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Receivables from third party payment service providers		¥ 9,730	$ 1,415	¥ 757
Interest receivables		540	79	718
Deposit for share repurchase	[1]	0	0	13,318
Deferred sponsorship and advertising expenses		1,019	148	1,993
Prepaid Insurance		3,740	544	5,344
Deferred expense	[2]	10,608	1,543	13,702
Receivables for disposal of long-term investments	[3]	4,332	630	9,322
Deductible value-added input tax		12,585	1,830	12,611
Others		22,644	3,294	23,551
Deposits receivable from merchants		¥ 65,198	$ 9,483	¥ 81,316
[1]	Deposit for share repurchase represents cash paid in advance by the Group under the share repurchase program commenced in 2015. The Group has withdrawn the repurchase and collected the deposit in Feb 2018.
[2]	Deferred expense represents cash paid in advance to vendors, such as consultant expense, marketing promotion expense and platform fee, which would be amortized according to their respective service periods.
[3]	Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Qufan as of December 31, 2018.

PREPAYMENTS, OTHER RECEIVABLE_4

PREPAYMENTS, OTHER RECEIVABLES AND DEPOSITS (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018
Deposits Expected Refund Term	1 year

PROPERTY AND EQUIPMENT, NET (Sc

PROPERTY AND EQUIPMENT, NET (Schedule of Property and Equipment) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Property, Plant and Equipment [Line Items]
Property and equipment, cost	¥ 185,433	$ 26,970	¥ 162,023
Less: Accumulated depreciation	(88,238)	(12,834)	(56,521)
Property and equipment, net	97,195	14,136	105,502
Electronics and office equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	54,615	7,943	43,315
Motor vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	11,893	1,730	11,804
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, cost	¥ 118,925	$ 17,297	¥ 106,904

PROPERTY AND EQUIPMENT, NET (Na

PROPERTY AND EQUIPMENT, NET (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Property, Plant and Equipment [Line Items]
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	¥ 42	$ 26	¥ 219	¥ 5
Depreciation expense of Continuing Operations	¥ 31,027	$ 4,513	¥ 13,181	¥ 12,860

INTANGIBLE ASSETS, NET (Schedul

INTANGIBLE ASSETS, NET (Schedule of Intangible Assets) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Finite-Lived Intangible Assets [Line Items]
Cost	¥ 265,859	$ 38,668	¥ 264,764
Accumulated amortization	(50,897)	(7,403)	(21,503)
Intangible assets, net	214,962	31,265	243,261
Finite-Lived Intangible Assets, Gross	265,859	38,668	264,764
Finite-Lived Intangible Assets, Accumulated Amortization	(50,897)	(7,403)	(21,503)
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	25,726	3,742	24,639
Accumulated amortization	(13,585)	(1,976)	(8,058)
Finite-Lived Intangible Assets, Gross	25,726	3,742	24,639
Finite-Lived Intangible Assets, Accumulated Amortization	(13,585)	(1,976)	(8,058)
License agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	151,177	21,988	151,177
Accumulated amortization	(22,730)	(3,306)	(7,693)
Finite-Lived Intangible Assets, Gross	151,177	21,988	151,177
Finite-Lived Intangible Assets, Accumulated Amortization	(22,730)	(3,306)	(7,693)
Internet domain name [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	2,907	423	2,907
Accumulated amortization	(2,034)	(296)	(1,808)
Finite-Lived Intangible Assets, Gross	2,907	423	2,907
Finite-Lived Intangible Assets, Accumulated Amortization	(2,034)	(296)	(1,808)
Brand name [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	86,049	12,515	86,041
Accumulated amortization	(12,548)	(1,825)	(3,944)
Finite-Lived Intangible Assets, Gross	86,049	12,515	86,041
Finite-Lived Intangible Assets, Accumulated Amortization	¥ (12,548)	$ (1,825)	¥ (3,944)

INTANGIBLE ASSETS, NET (Sched_2

INTANGIBLE ASSETS, NET (Schedule of Estimated Amortization Expense) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Finite-Lived Intangible Assets [Line Items]
2019	¥ 29,338	$ 4,267
2020	27,242	3,962
2021	26,123	3,799
2022	25,294	3,679
2023 and thereafter	106,965	15,558
Intangible assets, net	¥ 214,962	$ 31,265	¥ 243,261

INTANGIBLE ASSETS, NET (Narrati

INTANGIBLE ASSETS, NET (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Finite-Lived Intangible Assets [Line Items]
Amortization Expense Continuing Operations	¥ 31,511	$ 4,583	¥ 13,695	¥ 5,658
Amortization Expense Discontinued Operations	¥ 1,399	$ 203	¥ 12,407	¥ 1,188

ACCRUED EXPENSES AND OTHER CU_3

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Advance from end users	[1]	¥ 44,006	$ 6,400	¥ 35,888
Business tax and other taxes payable		4,276	623	4,118
Deferred government grant		3	0	2,807
Professional fees payable		8,160	1,187	12,039
Promotional events payables		8,290	1,206	7,753
Decoration payables		3,096	450	5,328
Unpaid consideration for business combination	[2]	0	0	54,550
Others		20,318	2,954	23,750
Accrued expenses and other current liabilities, Total		¥ 88,149	$ 12,820	¥ 146,233
[1]	Advance from end users represents payments received by the TMG in advance from the end users prior to the services to be provided.
[2]	Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of USD19.4 million (RMB122.0 million), which has been offset by the unpaid contingent consideration of RMB54.6 million as of the disposal date.

ACCRUED EXPENSES AND OTHER CU_4

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Narrative) (Details) ¥ in Thousands, $ in Thousands		Feb. 09, 2018CNY (¥)	Feb. 09, 2018USD ($)	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Contingent consideration for business combination	[1]			¥ 0	$ 0	¥ 54,550
Qufan [Member]
Contingent consideration for business combination		¥ 54,600
Sale of Stock, Consideration Received on Transaction		¥ 122,000	$ 19,400
Disposal Of Equity Interest, Percentage Of Ownership Transferred		51.00%
[1]	Unpaid consideration for business combination represents the unpaid cash consideration and contingent consideration relating to the acquisition of Qufan as of December 31, 2017. On February 9, 2018, the Company announced that it has disposed of its 51% equity interest in Qufan for a total consideration of USD19.4 million (RMB122.0 million), which has been offset by the unpaid contingent consideration of RMB54.6 million as of the disposal date.

ACCUMULATED DEFICIT AND STATU_3

ACCUMULATED DEFICIT AND STATUTORY RESERVE (Schedule of Accumulated Deficit) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
PRC statutory reserved funds	¥ 30,882	$ 4,491	¥ 30,882
Unreserved accumulated deficit	(1,340,306)	(194,939)	(888,633)
Accumulated deficit	¥ (1,309,424)	$ (190,448)	¥ (857,751)

ACCUMULATED DEFICIT AND STATU_4

ACCUMULATED DEFICIT AND STATUTORY RESERVE (Narrative) (Details) - 12 months ended Dec. 31, 2018 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
Retained Earnings Adjustments [Line Items]
Percentage of after tax profits to be allocated to general reserve fund	10.00%
PRC Subsidiary and VIEs restricted amount	¥ 113,588	$ 16,521
Variable Interest Entity, Primary Beneficiary [Member]
Retained Earnings Adjustments [Line Items]
Percentage of after tax profits to be allocated to general reserve fund	10.00%
Percentage of registered capital	50.00%
E-Sun Sky Computer [Member]
Retained Earnings Adjustments [Line Items]
Percentage of after tax profits to be allocated to general reserve fund	10.00%
Percentage of registered capital	50.00%

INCOME TAXES (Narrative Summary

INCOME TAXES (Narrative Summary of Tax Rates) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%
Youlanguang Technology [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
E-Sun Sky Network [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
E-Sun Sky Computer [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
Guangtiandi Technology [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	12.50%	12.50%
Hainan Menghuanxingchen [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%
Hainan Jingli [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%
Hainan Panfeng [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%
Hangzhou ESun Sky Network [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%
ESun Network [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
Shenzhen Yicai [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
Baifengrun Technology [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
Tongfu Technology [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
Shenzhen Kaisheng [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	25.00%	25.00%	25.00%
High-tech Enterprise [Member] | Shangmeng Services [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Transitional income tax rate period	3 years
Hong Kong [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	16.50%
PRC [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income				25.00%
PRC [Member] | Youlanguang Technology [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income			25.00%
PRC [Member] | Lhasa Yicai [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	15.00%	15.00%	15.00%
PRC [Member] | High-tech Enterprise [Member] | E-Sun Sky Computer [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income					15.00%
MALTA
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	35.00%
Effective Income Tax Rate Reconciliation, Percent	5.00%
CURAÇAO
Income Tax Contingency [Line Items]
Statutory EIT rate on taxable income	2.00%

INCOME TAXES (Schedule of Incom

INCOME TAXES (Schedule of Income (Loss) before Income Taxes) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Segment Reporting Information [Line Items]
Loss before income taxes	¥ (491,339)	$ (71,461)	¥ (345,494)	¥ (207,816)
Cayman Islands [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(166,710)	(24,245)	(162,884)	(179,348)
British Virgin Islands [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	0	0	(3)	(31)
USA [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(4,058)	(590)	(4,703)	(3,809)
Hong Kong [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(7,740)	(1,126)	(10,922)	(10,524)
PRC [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(290,530)	(42,256)	(169,923)	(14,104)
Japan [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(1,592)	(232)	(174)	0
Malta [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(7,949)	(1,156)	(4,321)	0
Curacao [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(12,752)	(1,855)	7,449	0
Cyprus [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	(8)	(1)	(13)	0
Australia [Member]
Segment Reporting Information [Line Items]
Loss before income taxes	¥ 0	$ 0	¥ 0	¥ 0

INCOME TAXES (Schedule of Curre

INCOME TAXES (Schedule of Current and Deferred Components) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Current tax (expense) benefit	¥ 19,258	$ 2,801	¥ 15,935	¥ (3,553)
Deferred tax benefit (expense)	344	50	(1,910)	1,410
Income tax expense (benefit)	¥ 19,602	$ 2,851	¥ 14,025	¥ (2,143)

INCOME TAXES (Reconciliation of

INCOME TAXES (Reconciliation of Tax Computed Applying Statutory Income Tax Rate) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
loss before income taxes	¥ (491,339)	$ (71,461)	¥ (345,494)	¥ (207,816)
Income tax computed at applicable tax rates (25%)	(122,835)	(17,866)	(86,374)	(51,954)
Effect of different tax rates in different jurisdictions	979	142	693	4,743
Non-deductible expenses	127,291	18,514	92,960	54,588
Effect of tax rate changes	0	0	0	(1,841)
Change in valuation allowance	1,637	238	0	(5,144)
Changes in interest and penalties on unrecognized tax position	0	0	5,098	3,105
Effect of EIT reversal for previous years	(20,726)	(3,014)	(19,704)	2,760
Research and development super-deduction	(5,942)	(864)	(6,692)	(2,947)
Others	(6)	(1)	(6)	(1,167)
Income tax expense (benefit)	¥ (19,602)	$ (2,851)	¥ (14,025)	¥ 2,143

INCOME TAXES (Schedule of Unrec

INCOME TAXES (Schedule of Unrecognized Tax Benefits Reconciliation) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Balance at beginning of year	¥ 24,298	$ 3,534	¥ 38,457	¥ 42,983
Increase relating to current year tax positions	0	0	5,194	3,630
Decrease relating to prior year tax positions	(7,420)	(1,079)	(1,595)	(3,204)
Decrease relating to expiration of applicable statute of limitations	(14,745)	(2,145)	(17,758)	(4,952)
Balance at end of year	¥ 2,133	$ 310	¥ 24,298	¥ 38,457

INCOME TAXES (Components of Def

INCOME TAXES (Components of Deferred Taxes) (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)
Deferred tax assets
Advertising expenditure deductible in future years	¥ 63,386	$ 9,219	¥ 61,191
Deferred revenue	306	45	307
Deferred government grants	2,417	352	2,417
Loss from equity method investment	203	30	203
Bad debt provision	5,097	741	5,097
Accrued rental expense	817	119	817
Impairment loss	1,250	182	1,250
Net operating losses ("NOLs")	109,850	15,977	34,700
Less: valuation allowance	(183,326)	(26,665)	(105,982)
Total deferred tax assets, net	0	0	0
Deferred tax liabilities
Apps and other licenses arisen from business combination	(7,744)	(1,126)	(6,754)
Total deferred tax liabilities	¥ (7,744)	$ (1,126)	¥ (6,754)

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)
Income Tax Contingency [Line Items]
Recognizes interest and penalties accrued	¥ 0	$ 0	¥ 5,098	¥ 4,932
Unrecognized tax benefits reversed	7,420		7,667	1,827	$ 1,079
Accrued interest and penalties	¥ 0		7,420	¥ 9,989	0
Statute of limitation period	In general, the PRC tax authorities have up to three to five years to conduct examinations of the Group’s tax filings.	In general, the PRC tax authorities have up to three to five years to conduct examinations of the Group’s tax filings.
Net operating losses	¥ 346,623				50,414
Cumulative temporary differences of investments in foreign subsidiaries	113,588		255,333		16,521
Unrecognized deferred tax liabilities	¥ 11,359		¥ 25,533		$ 1,652
Entitlement Of Income Tax Refund, Description	the paying entity is entitled to claim 6/7 of the profit tax paid as refund​​​​​​​	the paying entity is entitled to claim 6/7 of the profit tax paid as refund​​​​​​​
Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Year open for examination	2015	2015
Net operating losses expiration year	2019	2019
Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Year open for examination	2018	2018
Net operating losses expiration year	2023	2023

EMPLOYEE DEFINED CONTRIBUTION_2

EMPLOYEE DEFINED CONTRIBUTION PLAN (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Defined Benefit Plan Disclosure [Line Items]
Amount of employee benefits expensed	¥ 12,682	$ 1,845	¥ 12,707	¥ 15,481

SHARE-BASED PAYMENT (Summary of

SHARE-BASED PAYMENT (Summary of Share Option Activity and Related Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 19, 2014	Apr. 08, 2011	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted shares granted to employees and directors [Member]
Number of option
Outstanding, January 1, 2018			12,580,280
Granted			5,000,000
Forfeited			0
Exercised			(10,503,520)
Outstanding, December 31, 2018			7,076,760	12,580,280
Vested and expected to vest at December 31, 2018			7,076,760
Exercisable at December 31, 2018			0
Weighted average grant date fair value per share
Outstanding, January 1, 2018			$ 0.96
Granted			1.41	$ 0
Forfeited			0
Exercised			1.05
Outstanding, December 31, 2018			1.15	$ 0.96
Vested and expected to vest at December 31, 2018			$ 1.15
Weighted average remaining contractual year
Outstanding			8 years 11 months 26 days	9 years 7 months 17 days
Granted			9 years 5 months 26 days
Vested and expected to vest at December 31, 2018			8 years 11 months 26 days
Aggregated intrinsic value
Outstanding			$ 5,364	$ 12,719	$ 3,790
Vested and expected to vest at December 31, 2018			$ 5,364
Employees and Directors [Member]
Number of option
Outstanding, January 1, 2018			41,987,560
Granted		13,864,000	0	0
Forfeited			0
Exercised			(6,513,460)
Outstanding, December 31, 2018			35,474,100	41,987,560
Vested and expected to vest at December 31, 2018			35,248,669
Exercisable at December 31, 2018			32,524,100
Weighted average exercise price
Outstanding, January 1, 2018			$ 1.04
Granted	$ 3.232	$ 0.40	0
Forfeited			0
Exercised			0.92
Outstanding, December 31, 2018			1.07	$ 1.04
Vested and expected to vest at December 31, 2018			1.07
Exercisable at December 31, 2018			1
Weighted average grant date fair value per share
Outstanding, January 1, 2018			1.18
Granted			0		$ 0.89
Forfeited			0
Exercised			1.28
Outstanding, December 31, 2018			1.17	$ 1.18
Vested and expected to vest at December 31, 2018			1.17
Exercisable at December 31, 2018			$ 1.19
Weighted average remaining contractual year
Outstanding			11 months 8 days	1 year 7 months 2 days
Vested and expected to vest at December 31, 2018			10 months 13 days
Exercisable at December 31, 2018			10 months 2 days
Aggregated intrinsic value
Outstanding			$ 2,078	$ 3,986
Vested and expected to vest at December 31, 2018			1,953
Exercisable at December 31, 2018			$ 2,078

SHARE-BASED PAYMENT (Schedule o

SHARE-BASED PAYMENT (Schedule of Assumptions Used to Estimate Fair Value of Share Options Granted) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility		54.83%
Expected volatility, minimum	54.27%		70.80%
Expected volatility, maximum	60.15%		77.52%
Risk-free interest rate		1.20%
Risk-free interest rate, minimum	2.26%		1.13%
Risk-free interest rate, maximum	2.62%		1.62%
Dividend yield	0.00%	0.00%	0.00%
Forfeiture rate	0.00%	0.00%	0.00%
Suboptimal early exercise factor		$ 2.2
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Suboptimal early exercise factor	$ 2.2		$ 2.2
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Suboptimal early exercise factor	$ 2.8		$ 2.8

SHARE-BASED PAYMENT (Schedule_2

SHARE-BASED PAYMENT (Schedule of Share-Based Compensation Expenses Relating to Options Granted) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2016USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	¥ 108,628	$ 15,799	¥ 91,143	$ 14,008	¥ 163,341	$ 23,526
Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	351	51	1,343	206	2,993	431
Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	11,361	1,652	9,228	1,418	13,966	2,012
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	76,573	11,137	64,202	9,868	121,358	17,479
Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	20,343	$ 2,959	16,370	$ 2,516	25,024	$ 3,604
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	106,282		88,054		156,227
Employees [Member] | Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	351		1,343		2,993
Employees [Member] | Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	11,361		9,228		13,966
Employees [Member] | General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	74,227		61,113		114,244
Employees [Member] | Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	20,343		16,370		25,024
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	2,346		3,089		7,114
Directors [Member] | Cost of Services [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	0		0		0
Directors [Member] | Sales and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	0		0		0
Directors [Member] | General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	2,346		3,089		7,114
Directors [Member] | Service development expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expenses	¥ 0		¥ 0		¥ 0

SHARE-BASED PAYMENT (Narrative)

SHARE-BASED PAYMENT (Narrative) (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands	Dec. 01, 2019shares	Dec. 31, 2018CNY (¥)shares	Sep. 01, 2018shares	May 01, 2018USD ($)shares	Mar. 01, 2018shares	Aug. 15, 2017shares	Jan. 06, 2016$ / sharesshares	Jan. 05, 2016$ / sharesshares	Jun. 29, 2015$ / sharesshares	Mar. 19, 2015USD ($)$ / shares	Jun. 19, 2014$ / sharesshares	Oct. 22, 2013$ / sharesshares	Jun. 08, 2012USD ($)$ / sharesshares	Apr. 08, 2011$ / sharesshares	Mar. 28, 2011	Jun. 28, 2018shares	Jun. 19, 2018USD ($)shares	Nov. 22, 2017shares	Jun. 19, 2017USD ($)shares	Dec. 16, 2016$ / sharesshares	Jan. 16, 2016$ / sharesshares	Dec. 31, 2018CNY (¥)shares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)shares	Dec. 31, 2017$ / sharesshares	Dec. 31, 2016CNY (¥)	Dec. 31, 2016$ / shares	Dec. 31, 2018USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of issued and outstanding ordinary shares authorized for issuance under plan															12.00%
Number of vested and non vested options													13,740,000
Number of employees granted													88
Exercise price of options previously granted | $ / shares													$ 0.4
Exercise price of options granted | $ / shares													$ 0.2
Incremental compensation cost | $													$ 670
Incremental compensation cost recognized during year | $										$ 213			178
Incremental compensation cost of unvested options | $										39,616			2,036
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number																	7,594,240
Sharebased Compensation Arrangement by Sharebased Payment Award Equity Instruments Other than Options Grants in Period Fair Value																							$ 7,065	¥ 48,575		¥ 78,902
After modification [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options | $										15,390			3,460
Before modification [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options | $										4,193			2,790
Fifth Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost | $				$ 32
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				233,350
Sixth Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				66,600
Seventh Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost | $				$ 18
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				600,000
First Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost | $													670
Second Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost | $										$ 11,197
Third Modification Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number																			2,828,620
Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period														13,864,000								0	0	0
Exercise price of share | $ / shares											$ 3.232			$ 0.40									$ 0
Number of shares options vested		35,248,669																				35,248,669						35,248,669
Intrinsic value of options exercised																						¥ 2,284	$ 332	¥ 479		11,051
Number of vested and non vested options		35,474,100																				35,474,100		41,987,560	41,987,560			35,474,100
Fair value of options | ¥																										¥ 127,333
Weighted-average grant-date fair value per share granted | $ / shares																							$ 0				$ 0.89
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																						0	0
Employees and Directors [Member] | First anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested														5,506,600
Employees and Directors [Member] | Second anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested														5,225,800
Employees and Directors [Member] | Third anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested														1,565,800
Employees and Directors [Member] | Fourth anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested														1,565,800
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period							600,000		200,000		2,000,000			5,003,980						600,000
Exercise price of share | $ / shares							$ 1.851		$ 2.55					$ 0.40						$ 1.35
Directors [Member] | First anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested									66,670
Directors [Member] | Second anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested									66,670
Directors [Member] | Third anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested									66,660
Directors [Member] | November 22, 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested											666,690
Directors [Member] | November 22, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested											666,690
Directors [Member] | November 22, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested											666,620
Consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period														12,600,000
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period								2,500,000			32,561,800	2,660,000								15,900,000
Exercise price of share | $ / shares								$ 2				$ 0.40									$ 1.743
Exercise price of options previously granted | $ / shares										$ 3.232
Exercise price of options granted | $ / shares										$ 1
Incremental compensation cost | $										$ 11,197
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																				10,000,000
Employees [Member] | First anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested											5,437,820	1,620,000
Employees [Member] | Second anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested											10,843,080	220,000
Employees [Member] | Third anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested												220,000
Employees [Member] | 180 days [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested												600,000
Employees [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested								750,000													985,300
Employees [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested								750,000													1,964,700
Employees [Member] | Share-based Compensation Award, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares options vested								1,000,000													2,950,000
Compensation cost measured [Member] | After modification [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options | $										28,632			1,544
Total compensation cost | $										$ 39,829			$ 2,214
ADS [Member] | Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of share | $ / shares											$ 32.32
ADS [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of options previously granted | $ / shares										$ 32.32
Exercise price of options granted | $ / shares										$ 10
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted during period																						5,000,000	5,000,000
Number of shares options vested		7,076,760																				7,076,760						7,076,760
Number of vested and non vested options		7,076,760																				7,076,760		12,580,280	12,580,280			7,076,760
Equity awards granted to employees recognition period																						3 months 21 days	3 months 21 days
Weighted-average grant-date fair value per share granted | $ / shares																							$ 1.41		$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			2,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options		¥ 13,490																				¥ 13,490						$ 1,962
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares																							$ 1.41		$ 0.96
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			3,000,000
Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Exercises Aggregate Intrinsic Value																						¥ 7,962	$ 1,158
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																						0	0
Restricted Stock Units (RSUs) [Member] | Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																		350,000
Restricted Stock Units (RSUs) [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period						12,230,280
Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period					4,035,994
Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		4,035,994
Restricted Stock Units (RSUs) [Member] | Employees [Member] | Share-based Compensation Award, Tranche Three [Member] | Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	4,158,292
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental compensation cost | $				$ 6													$ 4,764		$ 55
Equity awards granted to employees recognition period																						5 months 19 days	5 months 19 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options		¥ 15,986																				¥ 15,986						$ 2,325

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Schedule of Operating Lease Commitments) (Details) - Dec. 31, 2018 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
2019	¥ 25,661	$ 3,780
2020	26,892	3,961
2021	21,952	3,234
2022	16,499	2,430
Operating lease commitments due	¥ 91,004	$ 13,405

COMMITMENTS AND CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Narrative) (Details) ¥ in Thousands, $ in Thousands	Sep. 12, 2016USD ($)	Feb. 25, 2015USD ($)	Nov. 22, 2013USD ($)	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)
Total rental expenses for operating leases				¥ 35,144	$ 5,111	¥ 28,695	¥ 11,293
Accrual for unrecognized tax benefits				¥ 2,133		¥ 24,298		$ 310
Payments for Legal Settlements		$ 1,500	$ 2,500
Proceeds from Insurance Settlement, Investing Activities	$ 1,000

LOSSES PER SHARE (Details)

LOSSES PER SHARE (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)¥ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)¥ / sharesshares	Dec. 31, 2016CNY (¥)¥ / sharesshares
Denominator:
Denominator used for losses per share	418,911,292	418,911,292	408,310,122	414,872,756
Numerator:
Net loss from continuing operations attributable to ordinary shareholders	¥ (471,737)	$ (68,610)	¥ (331,469)	¥ (209,959)
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	418,911,292	418,911,292	408,310,122	414,872,756
Denominator used for losses per share	418,911,292	418,911,292	408,310,122	414,872,756
Class B Ordinary shares [Member]
Numerator:
Allocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share—basic	¥ (82,216)	$ (11,958)	¥ (59,172)	¥ (36,974)
Denominator:
Denominator used for losses per share	74,400,299	74,400,299	74,400,299	75,442,810
Losses per share from continuing operations — basic | (per share)	¥ (1.13)	$ (0.164)	¥ (0.80)	¥ (0.49)
Numerator:
Allocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders used in calculating loss per ordinary share— diluted	¥ (82,216)	$ (11,958)	¥ (59,172)	¥ (36,974)
Reallocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders as a result of conversion of Class B to Class A shares
Net loss from continuing operations attributable to ordinary shareholders	¥ (82,216)	$ (11,958)	¥ (59,172)	¥ (36,974)
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	74,400,299	74,400,299	74,400,299	75,442,810
Conversion of Class B to Class A ordinary shares
Share options
Denominator used for losses per share	74,400,299	74,400,299	74,400,299	75,442,810
Losses per share from continuing operations—diluted | (per share)	¥ (1.13)	$ (0.164)	¥ (0.80)	¥ (0.49)
Losses from continuing operations per ADS:
Denominator used for losses per ADS - basic
Denominator used for losses per ADS - diluted
Losses from continuing operations per ADS – basic | (per share)
Losses from continuing operations per ADS – diluted | (per share)
Class A Ordinary shares [Member]
Numerator:
Allocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share—basic	¥ (380,701)	$ (55,371)	¥ (265,563)	¥ (166,352)
Denominator:
Denominator used for losses per share	344,510,993	344,510,993	333,909,823	339,429,946
Losses per share from continuing operations — basic | (per share)	¥ (1.13)	$ (0.164)	¥ (0.80)	¥ (0.49)
Numerator:
Allocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders used in calculating loss per ordinary share— diluted	¥ (380,701)	$ (55,371)	¥ (265,563)	¥ (166,352)
Reallocation of net loss from continuing operations attributable to 500.com Limited's ordinary shareholders as a result of conversion of Class B to Class A shares	(82,216)	(11,958)	(59,172)	(36,974)
Net loss from continuing operations attributable to ordinary shareholders	¥ (462,917)	$ (67,329)	¥ (324,735)	¥ (203,326)
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic losses per share	344,510,993	344,510,993	333,909,823	339,429,946
Conversion of Class B to Class A ordinary shares	74,400,299	74,400,299	74,400,299	75,442,810
Share options
Denominator used for losses per share	418,911,292	418,911,292	408,310,122	414,872,756
Losses per share from continuing operations—diluted | (per share)	¥ (1.13)	$ (0.164)	¥ (0.80)	¥ (0.49)
Losses from continuing operations per ADS:
Denominator used for losses per ADS - basic	34,451,099	34,451,099	33,390,982	33,942,995
Denominator used for losses per ADS - diluted	41,891,129	41,891,129	40,831,012	41,487,276
Losses from continuing operations per ADS – basic | (per share)	¥ (11.28)	$ (1.64)	¥ (7.95)	¥ (4.90)
Losses from continuing operations per ADS – diluted | (per share)	¥ (11.28)	$ (1.64)	¥ (7.95)	¥ (4.90)

LOSSES PER SHARE (Schedule of e

LOSSES PER SHARE (Schedule of earnings per share basic and diluted from discontinued operations) (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)¥ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)¥ / sharesshares	Dec. 31, 2016CNY (¥)¥ / sharesshares
Denominator:
Denominator used for income per share	418,911,292	418,911,292	408,310,122	414,872,756
Numerator:
Net income from discontinued operations attributable to ordinary shareholders	¥ 12,343	$ 1,794	¥ 15,327	¥ 707
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic income per share	418,911,292	418,911,292	408,310,122	414,872,756
Denominator used for income per share	418,911,292	418,911,292	408,310,122	414,872,756
Common Class A [Member]
Numerator:
Allocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share—basic	¥ 9,247	$ 1,345	¥ 6,245	¥ 295
Denominator:
Denominator used for income per share	344,510,993	344,510,993	333,909,823	339,429,946
Income per share from discontinued operations — basic | (per share)	¥ 0.03	$ 0.004	¥ 0.02	¥ 0.001
Numerator:
Allocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share— diluted	¥ 9,247	$ 1,345	¥ 6,245	¥ 295
Reallocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders as a result of conversion of Class B to Class A shares	1,997	290	1,391	66
Net income from discontinued operations attributable to ordinary shareholders	¥ 11,244	$ 1,635	¥ 7,636	¥ 361
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic income per share	344,510,993	344,510,993	333,909,823	339,429,946
Conversion of Class B to Class A ordinary shares	74,400,299	74,400,299	74,400,299	75,442,810
Share options
Denominator used for income per share	418,911,292	418,911,292	408,310,122	414,872,756
Losses per share from discontinued operations—diluted | (per share)	¥ 0.03	$ 0.004	¥ 0.02	¥ 0.001
Income from discontinued operations per ADS:
Denominator used for income per ADS - basic	34,451,099	34,451,099	33,390,982	33,942,995
Denominator used for income per ADS - diluted	41,891,129	41,891,129	40,831,012	41,487,276
Income from discontinued operations per ADS – basic | (per share)	¥ 0.27	$ 0.04	¥ 0.19	¥ 0.01
Income from discontinued operations per ADS – diluted | (per share)	¥ 0.27	$ 0.04	¥ 0.19	¥ 0.01
Common Class B [Member]
Numerator:
Allocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share—basic	¥ 1,997	$ 290	¥ 1,391	¥ 66
Denominator:
Denominator used for income per share	74,400,299	74,400,299	74,400,299	75,442,810
Income per share from discontinued operations — basic | (per share)	¥ 0.03	$ 0.004	¥ 0.02	¥ 0.001
Numerator:
Allocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders used in calculating income per ordinary share— diluted	¥ 1,997	$ 290	¥ 1,391	¥ 66
Reallocation of net income from discontinued operations attributable to 500.com Limited's ordinary shareholders as a result of conversion of Class B to Class A shares
Net income from discontinued operations attributable to ordinary shareholders	¥ 1,997	$ 290	¥ 1,391	¥ 66
Denominator:
Weighted average number of ordinary shares outstanding used in calculating basic income per share	74,400,299	74,400,299	74,400,299	75,442,810
Conversion of Class B to Class A ordinary shares
Share options
Denominator used for income per share	74,400,299	74,400,299	74,400,299	75,442,810
Losses per share from discontinued operations—diluted | (per share)	¥ 0.03	$ 0.004	¥ 0.02	¥ 0.001
Income from discontinued operations per ADS:
Denominator used for income per ADS - basic
Denominator used for income per ADS - diluted
Income from discontinued operations per ADS – basic | (per share)
Income from discontinued operations per ADS – diluted | (per share)

EQUITY TRANSACTIONS (Narrative)

EQUITY TRANSACTIONS (Narrative) (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2013shares	Dec. 31, 2018CNY (¥)shares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017CNY (¥)shares	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016CNY (¥)shares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares	Dec. 31, 2013USD ($)shares
Class of Stock [Line Items]
Aggregate consideration from shares issued from exercise of stock options		¥ 41,473	$ 6,032	¥ 5,583		¥ 12,558
Authorized share capital, ordinary shares			1,000,000,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		10,503,520	10,503,520
Minimum [Member]
Class of Stock [Line Items]
Options exercise price per share | $ / shares			$ 0.2		$ 0.2		$ 0.2	$ 0.2	$ 0.2
Maximum [Member]
Class of Stock [Line Items]
Options exercise price per share | $ / shares			1		1		$ 1	$ 1	$ 0.4
Class B Ordinary shares [Member]
Class of Stock [Line Items]
Ordinary shares, par value per share | $ / shares			$ 0.00005		$ 0.00005
Authorized share capital, ordinary shares			300,000,000		300,000,000
Ordinary shares issued			74,400,299		74,400,299		74,400,299	84,999,159	96,634,529	262,197,451
Class B Ordinary shares [Member] | Ordinary shares [Member]
Class of Stock [Line Items]
Conversion of ordinary shares, shares converted	231,428,220
Conversion of convertible note, ordinary shares issued										19,230,769
Private placement, ordinary shares issued										11,538,462
Ordinary shares issued, aggregate consideration | $										$ 15,000
Class A Ordinary shares [Member]
Class of Stock [Line Items]
Issuance of ordinary shares from exercise of share options, shares		17,016,980	17,016,980	894,760	894,760	2,276,320	2,276,320
Number of common shares issued during period		6,513,460	6,513,460	894,760	894,760	2,276,320	2,276,320	5,274,480	22,742,660
Ordinary shares, par value per share | $ / shares			$ 0.00005		$ 0.00005		$ 0.00005	$ 0.00005	$ 0.00005
Aggregate consideration from shares issued from exercise of stock options | $			$ 6,014		$ 831		$ 2,032	$ 2,960	$ 8,107
Number of additional shares issued								63,500,500
Repurchased of ordinary shares, consideration | $					$ 2,999		$ 17,240	$ 1,434
Repurchased of ordinary shares				2,602,000	2,602,000	11,415,320	11,415,320	1,220,000
Authorized share capital, ordinary shares			700,000,000		700,000,000		700,000,000
Ordinary shares issued, aggregate consideration | $								$ 123,391
Ordinary shares issued			350,804,532		333,787,552		335,494,792	334,034,932	254,844,582	66,539,000
Class A Ordinary shares [Member] | Ordinary shares [Member]
Class of Stock [Line Items]
Issuance of ordinary shares from exercise of share options, shares								5,274,480	22,742,660
Conversion of ordinary shares, shares converted	66,539,000

FAIR VALUE MEASUREMENT (Assets

FAIR VALUE MEASUREMENT (Assets and Liabilities Measured or Disclosed At Fair Value) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value	¥ 274,140		¥ 378,908		$ 39,872	$ 58,237
Fair Value, Measured on Non Recurring Basis, Gain Loss Included in Earnings	149,896	$ 21,801
Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value			0			0
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		54,550		0
Fair Value, Measurements, Recurring [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		2,384		0
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	0		733		0
Fair Value, Measurements, Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		54,550		0
Fair Value, Measurements, Recurring [Member] | Contingent consideration payable [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		2,384		0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	198,391		100,000		28,854	15,370
Long-term investments	98,391	14,310		$ 0
Liabilities measured at fair value | $						8,384
Fair Value, Measurements, Nonrecurring [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			29,514			4,537
Liabilities measured at fair value | $						366
Fair Value, Measurements, Nonrecurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments | $						0
Fair Value, Measurements, Nonrecurring [Member] | Available-for-sale Securities [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments | $						113
Fair Value, Measurements, Nonrecurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value | $						8,384
Fair Value, Measurements, Nonrecurring [Member] | Contingent consideration payable [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value | $						366
Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments	149,896	$ 21,801	28,781	$ 4,424
Targeted Asset Management Plan [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	100,000		100,000		14,544
Targeted Asset Management Plan [Member] | Fair Value, Measurements, Recurring [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Targeted Asset Management Plan [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments | $						15,370
Targeted Asset Management Plan [Member] | Fair Value, Measurements, Nonrecurring [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments | $						0
Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	246,560		289,304		35,861	44,465
Fixed-rate investments [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			0			0
Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	27,580		89,604		4,011	13,772
Adjustable-rate investments [Member] | Total Losses [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			0			$ 0
Quoted prices in active markets for identical assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	98,391		0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments	98,391		0
Quoted prices in active markets for identical assets (Level 1) [Member] | Targeted Asset Management Plan [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			0
Quoted prices in active markets for identical assets (Level 1) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			0
Significant other observable inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value	274,140		378,908
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			0
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value			0
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	100,000		100,000
Significant other observable inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments			0
Significant other observable inputs (Level 2) [Member] | Targeted Asset Management Plan [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments	100,000		100,000
Significant other observable inputs (Level 2) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	246,560		289,304
Significant other observable inputs (Level 2) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	27,580		89,604
Significant unobservable inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total fair value			0
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		54,550
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Contingent consideration payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value	0		54,550
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Significant unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member] | Equity Method Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term investments			0
Significant unobservable inputs (Level 3) [Member] | Targeted Asset Management Plan [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments			0
Significant unobservable inputs (Level 3) [Member] | Fixed-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			0
Significant unobservable inputs (Level 3) [Member] | Adjustable-rate investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents			¥ 0

FAIR VALUE MEASUREMENT (Signifi

FAIR VALUE MEASUREMENT (Significant Unobservable Inputs Used In Fair Value Measurement) (Details) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Dec. 31, 2017CNY (¥)¥ / shares
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Spot value of net income | ¥	¥ 31,698
Volatility of net income	10.00%
Expected annual growth rate of net income	0.00%
Discount factor | ¥ / shares	¥ 0.95

FAIR VALUE MEASUREMENT (Net Der

FAIR VALUE MEASUREMENT (Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	¥ 54,550		¥ 52,240	¥ 0
Recognized during the year	(54,550)		2,310	52,240
Ending Balance	¥ 0	$ 0	¥ 54,550	¥ 52,240

SEGMENT REPORTING (Details)

SEGMENT REPORTING (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Net Revenues	¥ 126,089	$ 18,339	¥ 71,858	¥ 5,259
Depreciation and Amortization	62,538	9,096	26,876	18,518
Operating (loss) income from continuing operations	(344,488)	(50,103)	(338,531)	(368,183)
Interest income	15,308	2,226	20,032	23,859
Income tax expense	(19,602)	(2,851)	(14,025)	2,143
Segment net (loss) income from continuing operations	(471,737)	$ (68,610)	(331,469)	(209,959)
Segment assets	1,246,584		1,754,559	2,063,328	$ 181,307
Europe
Segment Reporting Information [Line Items]
Net Revenues	105,511		49,370	0
Depreciation and Amortization	31,511		14,062	0
Operating (loss) income from continuing operations	16,638		2,755	0
Interest income	0		0	0
Income tax expense	1,412		156	0
Segment net (loss) income from continuing operations	18,050		2,959	0
Segment assets	42,527		58,535	0
CHINA
Segment Reporting Information [Line Items]
Net Revenues	20,578		22,488	5,259
Depreciation and Amortization	31,027		12,814	18,518
Operating (loss) income from continuing operations	327,850		(341,286)	368,183
Interest income	15,308		20,032	23,859
Income tax expense	(21,014)		(14,181)	2,143
Segment net (loss) income from continuing operations	453,687		(334,428)	209,959
Segment assets	¥ 1,204,057		¥ 1,696,024	¥ 2,063,328

SUBSEQUENT EVENTS (Narrative) (

SUBSEQUENT EVENTS (Narrative) (Details) ¥ in Thousands, $ in Thousands	Jan. 01, 2020shares	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)	Dec. 31, 2018EUR (€)
CaiXunHao [Member]
Subsequent Event [Line Items]
Disposal Group, Including Discontinued Operation, Revenue		¥ 16,036	$ 2,332	¥ 2,332	¥ 0
CaiXunHao [Member] | Sales Revenue, Net [Member]
Subsequent Event [Line Items]
Concentration Risk, Percentage		12.70%	12.70%	3.20%	0.00%
Multi Group [Member]
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage				93.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				7.00%		7.00%
Redeemable Noncontrolling Interest, Equity, Common, Redemption Value | €						€ 3,745
Subsequent Event [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares	7,553,980

CONDENSED FINANCIAL INFORMATI_3

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Balance Sheets) (Details) ¥ in Thousands, $ in Thousands		Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016CNY (¥)	Dec. 31, 2015CNY (¥)
Current assets:
Cash and cash equivalents		¥ 435,133	$ 63,287	¥ 487,266
Amounts due from intergroup companies	[1]	4,332	630	9,322
Total current assets		601,585	87,496	737,022
Non-current assets:
Property and equipment, net		97,195	14,136	105,502
Total non-current assets		644,999	93,811	1,017,537
TOTAL ASSETS		1,246,584	181,307	1,754,559		¥ 2,063,328
Current liabilities:
Accrued payroll and welfare payable		9,779	1,422	11,855
Accrued expenses and other liabilities		88,149	12,820	146,233
Total current liabilities		99,694	14,499	175,937
TOTAL LIABILITIES		111,634	16,235	223,197
Shareholders' equity:
Additional paid-in capital		2,431,924	353,709	2,295,111
Treasury shares		(143,780)	(20,912)	(143,780)
Accumulated other comprehensive income		137,736	20,033	116,051
Total 500.com Limited shareholders' equity		1,116,605	162,404	1,409,774
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY		1,246,584	181,307	1,754,559
Class A Ordinary shares [Member]
Shareholders' equity:
Ordinary shares, value		121	18	115
Class B Ordinary shares [Member]
Shareholders' equity:
Ordinary shares, value		28	4	28
Parent Company [Member]
Current assets:
Cash and cash equivalents		12,338	1,795	1,304	$ 190	¥ 341,671	¥ 20,594
Time deposits		0	0	0
Other current assets		7,348	1,069	20,257
Amounts due from intergroup companies		506,418	73,656	400,659
Total current assets		526,104	76,520	422,220
Non-current assets:
Investment in subsidiaries and VIEs		605,167	88,018	1,060,273
Property and equipment, net		167	24	241
Total non-current assets		605,334	88,042	1,060,514
TOTAL ASSETS		1,131,438	164,562	1,482,734
Current liabilities:
Accrued payroll and welfare payable		369	54	544
Accrued expenses and other liabilities		9,452	1,375	68,015
Amounts due to intergroup companies		5,012	729	4,401
Total current liabilities		14,833	2,158	72,960
TOTAL LIABILITIES		14,833	2,158	72,960
Shareholders' equity:
Additional paid-in capital		2,431,924	353,709	2,295,111
Treasury shares		(143,780)	(20,912)	(143,780)
Accumulated other comprehensive income		137,736	20,033	116,051
Accumulated deficit and statutory reserve		(1,309,424)	(190,448)	(857,751)
Total 500.com Limited shareholders' equity		1,116,605	162,404	1,409,774
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY		1,131,438	164,562	1,482,734
Parent Company [Member] | Class A Ordinary shares [Member]
Shareholders' equity:
Ordinary shares, value		121	18	115
Parent Company [Member] | Class B Ordinary shares [Member]
Shareholders' equity:
Ordinary shares, value		¥ 28	$ 4	¥ 28
[1]	Receivables for disposal of long-term investment represent the receivables from the disposal of Caiyu and Qufan as of December 31, 2018.

CONDENSED FINANCIAL INFORMATI_4

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed statements of comprehensive income (loss)) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Condensed Income Statements, Captions [Line Items]
Net Revenues	¥ 126,089	$ 18,339	¥ 71,858	¥ 5,259
Operating expenses:
Sales and marketing	(92,465)	(13,448)	(63,295)	(43,398)
General and administrative	(251,384)	(36,562)	(224,321)	(247,408)
Indemnity cost	0	0	0	(9,979)
Other operating income	12,638	1,838	1,204	2,731
Operating loss from continuing operations	(344,488)	(50,103)	(338,531)	(368,183)
Interest income	15,308	2,226	20,032	23,859
Loss before income tax	(491,339)	(71,461)	(345,494)	(207,816)
Income tax benefit	(19,602)	(2,851)	(14,025)	2,143
Net loss attributable to 500.com Limited	(451,673)	(65,694)	(317,099)	(202,965)
Change in fair value of AFS	0	0	(733)	754
Comprehensive loss attributable to 500.com Limited	(429,988)	(62,539)	(374,028)	(119,864)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net Revenues	0	0	0	0
Operating expenses:
Sales and marketing	(1,784)	(259)	(497)	(402)
General and administrative	(177,455)	(25,810)	(68,260)	(15,934)
Total operating expenses	(179,239)	(26,069)	(68,757)	(16,336)
Indemnity cost	0	0	0	(9,979)
Other operating income	0	0	0	39
Operating loss from continuing operations	(179,239)	(26,069)	(68,757)	(26,276)
Interest income	2	0	4,818	10,269
Equity in (loss) profits of subsidiaries and VIEs	(272,436)	(39,623)	(253,160)	(186,958)
Loss before income tax	(451,673)	(65,692)	(317,099)	(202,965)
Income tax benefit	0	0	0	0
Net loss attributable to 500.com Limited	(451,673)	(65,692)	(317,099)	(202,965)
Foreign currency translation gain (loss)	21,685	3,155	(56,196)	82,347
Change in fair value of AFS	0	0	(733)	754
Comprehensive loss attributable to 500.com Limited	¥ (429,988)	$ (62,537)	¥ (374,028)	¥ (119,864)

CONDENSED FINANCIAL INFORMATI_5

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Statements of Cash Flows) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2017CNY (¥)	Dec. 31, 2016CNY (¥)
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents at beginning of the year	¥ 487,266
Cash and cash equivalents at end of the year	435,133	$ 63,287	¥ 487,266
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(91,547)	(13,315)	(270,965)	¥ 25,679
Net cash (used in) provided by investing activities	(56,941)	(8,282)	3,065	413,401
Net cash provided by (used in) financing activities	159,456	23,192	(11,945)	(118,484)
Effect of exchange rate changes on cash and cash equivalents	66	10	(60,522)	481
Net (decrease) increase in cash and cash equivalents	11,034	1,605	(340,367)	321,077
Cash and cash equivalents at beginning of the year	1,304	190	341,671	20,594
Cash and cash equivalents at end of the year	¥ 12,338	$ 1,795	¥ 1,304	¥ 341,671

CONDENSED FINANCIAL INFORMATI_6

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Schedule of Condensed Balance Sheets) (Parenthetical) (Details) - $ / shares	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, shares authorized	1,000,000,000
Class A Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005	$ 0.00005	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	700,000,000	700,000,000	700,000,000
Ordinary shares, shares issued	350,804,532	333,787,552	335,494,792	334,034,932	254,844,582	66,539,000
Ordinary shares, shares outstanding	350,804,532	333,787,552
Class B Ordinary shares [Member]
Condensed Financial Statements, Captions [Line Items]
Ordinary shares, par value	$ 0.00005	$ 0.00005
Ordinary shares, shares authorized	300,000,000	300,000,000
Ordinary shares, shares issued	74,400,299	74,400,299	74,400,299	84,999,159	96,634,529	262,197,451
Ordinary shares, shares outstanding	74,400,299	74,400,299

CONDENSED FINANCIAL INFORMATI_7

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY (Narrative) (Details) - Dec. 31, 2018 ¥ in Thousands, $ in Thousands	CNY (¥)	USD ($)
PRC Subsidiary and VIEs restricted amount	¥ 113,588	$ 16,521