Tuniu (TOUR) 20-F 17 Apr 15 2014 FY Annual report (foreign) Financial data

Document_and_Entity_Informatio

Document and Entity Information	12 Months Ended
	Dec. 31, 2014
Entity Registrant Name	Tuniu Corp
Entity Central Index Key	1597095
Document Type	20-F
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Class A ordinary shares
Entity Common Stock, Shares Outstanding	82,487,876
Class B ordinary shares
Entity Common Stock, Shares Outstanding	105,948,046

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
	USD ($)	CNY	USD ($)	CNY	CNY	CNY	Preferred A Shares	Preferred B Shares	Preferred C Shares	Preferred D Shares
							CNY	CNY	CNY	CNY
Current assets:
Cash and cash equivalents	$234,942,200	1,457,722,376	$67,595,467	419,402,835	299,237,536	332,100,808
Restricted cash	7,096,348	44,030,000		9,250,000
Short-term investments	75,519,776	468,570,000		327,000,000
Accounts receivable, net	1,393,237	8,644,481		1,651,087
Prepayments and other current assets	92,721,031	575,296,906		286,560,247
Total current assets	411,672,592	2,554,263,763		1,043,864,169
Non-current assets:
Property and equipment, net	11,654,303	72,310,290		24,851,303
Other non-current assets	2,972,517	18,443,279		6,657,304
Total non-current assets	14,626,820	90,753,569		31,508,607
Total assets	426,299,412	2,645,017,332		1,075,372,776
Current liabilities (including current liabilities of the Affiliated Entities without recourse to the Company amounting to RMB753,432,666 and RMB1,168,077,588 (US$188,259,934), as of December 31, 2013 and December 2014, respectively):
Accounts payable	61,680,741	382,704,323		288,964,931
Salary and welfare payable	12,690,481	78,739,361		47,388,096
Taxes payable	625,994	3,884,044		1,323,961
Advances from customers	102,960,351	638,827,791		396,737,968
Accrued expenses and other current liabilities	17,706,237	109,860,116		29,732,090
Total current liabilities	195,663,804	1,214,015,635		764,147,046
Non-current liabilities:	3,590,639	22,278,479		19,870,002
Total liabilities	199,254,443	1,236,294,114		784,017,048
Commitments and contingencies (Note 13)
Mezzanine equity:
Total mezzanine equity				716,441,243			9,360,443	48,890,116	290,255,691	367,934,993
Shareholders' equity/(deficit)
Ordinary shares (US$0.0001 par value; 126,999,531 shares authorized and 26,000,000 shares issued and outstanding as of December 31, 2013; 1,000,000,000 shares (including 780,000,000 Class A shares, 120,000,000 Class B shares and 100,000,000 shares to be designated by the Board of Directors) authorized and 188,435,922 shares (including 82,487,876 Class A shares and 105,948,046 Class B shares) issued and outstanding as of December 31, 2014)	19,513	121,068		17,757
Additional paid-in capital	370,487,483	2,298,726,639		200,000
Accumulated other comprehensive loss	-3,397,597	-21,080,728		-19,723,270
Accumulated deficit	-140,064,430	-869,043,761		-405,580,002
Total shareholder's equity/(deficit)	227,044,969	1,408,723,218		-425,085,515	-281,167,619	-173,915,375
Total liabilities, mezzanine equity and shareholders' equity/ (deficit)	$426,299,412	2,645,017,332		1,075,372,776

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical)(VIE)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
	USD ($)	CNY	CNY
Current liabilities (including current liabilities of the Affiliated Entities without recourse to the Company	$188,259,934	1,168,077,588	753,432,666

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY
Revenues:
Organized tours	$553,271,038	3,432,825,480	1,892,826,128	1,075,094,044
Self-guided tours	15,009,114	93,125,546	48,900,513	32,359,164
Others	4,634,682	28,756,346	20,744,092	12,874,316
Total revenues	572,914,834	3,554,707,372	1,962,470,733	1,120,327,524
Less: Business and related taxes	-3,186,054	-19,768,193	-12,783,319	-7,446,944
Net revenues	569,728,780	3,534,939,179	1,949,687,414	1,112,880,580
Cost of revenues	-533,281,887	-3,308,800,795	-1,829,665,386	-1,073,731,629
Gross profit	36,446,893	226,138,384	120,022,028	39,148,951
Operating expenses:
Research and product development	-16,903,835	-104,881,535	-38,994,362	-33,369,749
Sales and marketing	-69,978,901	-434,191,090	-110,070,612	-57,993,819
General and administrative	-26,913,523	-166,987,647	-69,678,933	-62,005,515
Other operating income	1,112,370	6,901,814	1,688,560	773,727
Total operating expenses	-112,683,889	-699,158,458	-217,055,347	-152,595,356
Loss from operations	-76,236,996	-473,020,074	-97,033,319	-113,446,405
Other income/(expense)
Interest income	5,042,000	31,283,593	16,163,339	7,431,724
Foreign exchange related gains / (losses), net	-859,627	-5,333,644	1,286,468	-740,678
Other loss, net	-126,958	-787,726	-48,567	-356,674
Loss before income tax expense	-72,181,581	-447,857,851	-79,632,079	-107,112,033
Income tax expense				-77,890
Net loss	-72,181,581	-447,857,851	-79,632,079	-107,189,923
Deemed dividends to preferred shareholders	-2,515,216	-15,605,908	-59,428,400
Net loss attributable to ordinary shareholders	-74,696,797	-463,463,759	-139,060,479	-107,189,923
Net loss	-72,181,581	-447,857,851	-79,632,079	-107,189,923
Other comprehensive loss:
Foreign currency translation adjustment, net of nil tax	-218,783	-1,357,458	-4,857,417	-62,321
Comprehensive loss	($72,400,364)	-449,215,309	-84,489,496	-107,252,244
Loss per share
Net loss per ordinary share attributable to ordinary shareholders-basic and diluted (in dollars per share)	($0.71)	-4.38	-5.35	-4.12
Weighted average number of ordinary shares used in computing basic and diluted loss per share (in shares)	105,746,313	105,746,313	26,000,000	26,000,000

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) (CNY)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Foreign currency translation adjustment, tax	0	0	0

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY/(DEFICIT)	Ordinary shares	Ordinary shares	Ordinary shares	Additional paid-in capital	Additional paid-in capital	Additional paid-in capital	Accumulated other comprehensive loss	Accumulated Deficit	Initial public offering	Private Placement	Total	Total
	Initial public offering	Private Placement	CNY	Initial public offering	Private Placement	CNY	CNY	CNY	CNY	CNY	USD ($)	CNY
	CNY	CNY		CNY	CNY
Balance at Dec. 31, 2011			17,757			200,000	-14,803,532	-159,329,600				-173,915,375
Balance (in shares) at Dec. 31, 2011			26,000,000
Changes Stockholders' Equity
Foreign currency translation adjustments							-62,321					-62,321
Net loss								-107,189,923				-107,189,923
Balance at Dec. 31, 2012			17,757			200,000	-14,865,853	-266,519,523				-281,167,619
Balance (in shares) at Dec. 31, 2012			26,000,000
Changes Stockholders' Equity
Foreign currency translation adjustments							-4,857,417					-4,857,417
Deemed dividend from modification of Series A Convertible Preferred Shares								-59,428,400				-59,428,400
Net loss								-79,632,079				-79,632,079
Balance at Dec. 31, 2013			17,757			200,000	-19,723,270	-405,580,002				-425,085,515
Balance (in shares) at Dec. 31, 2013			26,000,000
Changes Stockholders' Equity
Capital contribution from shareholders of VIE						70,000						70,000
Conversion of Series A,B,C and D Convertible Preferred Shares into ordinary shares upon the completion of initial public offering			56,277			731,990,874						732,047,151
Conversion of Series A,B,C and D Convertible Preferred Shares into ordinary shares upon the completion of initial public offering ( in shares)			85,852,919
Issuance of ordinary shares,net of issuance costs	23,059	22,529		632,448,980	891,490,644				632,472,039	891,513,173
Issuance of ordinary shares,net of issuance costs (in shares)	37,406,666	36,812,868
Issuance of ordinary shares pursuant to share incentive plan			1,446			3,353,463						3,354,909
Issuance of ordinary shares pursuant to share incentive plan ( in shares)			2,363,469
Share-based compensation expenses						39,172,678						39,172,678
Foreign currency translation adjustments							-1,357,458				-218,783	-1,357,458
Deemed dividend from modification of Series A Convertible Preferred Shares								-15,605,908			-2,515,216	-15,605,908
Net loss								-447,857,851			-72,181,581	-447,857,851
Balance at Dec. 31, 2014			121,068			2,298,726,639	-21,080,728	-869,043,761			$227,044,969	1,408,723,218
Balance (in shares) at Dec. 31, 2014			188,435,922

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY/(DEFICIT) (Parenthetical) (CNY)	12 Months Ended
	Dec. 31, 2014
Initial public offering
Issuance costs	22,731,781
Private Placement
Issuance costs	14,279,026

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY
Cash flows from operating activities:
Net loss	($72,181,581)	-447,857,851	-79,632,079	-107,189,923
Adjustments to reconcile net loss to net cash provided by/(used in) operating activities:
Depreciation of property and equipment	1,751,739	10,868,838	8,764,423	10,111,622
Amortization of intangible assets	158,580	983,925	481,638	609,756
Foreign exchange (gain)/loss	439,811	2,728,863	-1,286,468	740,678
Loss from disposal of property and equipment	9,980	61,922	113,968	356,341
Share-based compensation expenses	6,313,490	39,172,678
Changes in operating assets and liabilities:
Accounts receivable	-1,127,131	-6,993,394	4,574,361	-4,573,176
Prepayments and other current assets	-46,386,657	-287,810,649	-159,510,405	-70,415,277
Other non-current assets	-2,155,419	-13,373,511	-331,200	-810,531
Accounts payable	13,601,903	84,394,365	161,608,152	74,989,927
Taxes payable	412,610	2,560,083	725,130	-249,538
Advance from customers	39,017,797	242,089,823	152,524,356	86,294,831
Accrued expenses and other current liabilities	16,451,296	102,073,710	28,704,374	24,798,548
Net cash provided by /(used in) operating activities	-43,693,582	-271,101,198	116,736,250	14,663,258
Cash flows from investing activities:
Purchase of short-term investments	-88,253,070	-547,575,000	-451,800,000	-224,000,000
Proceeds from maturity of short-term investments	65,274,151	405,000,000	154,800,000	194,000,000
Changes in restricted cash	-5,605,518	-34,780,000	-2,375,000	4,655,000
Purchase of property and equipment and intangible assets	-8,158,830	-50,622,276	-4,842,892	-21,440,852
Proceeds from disposal of property and equipment	8,700	53,980
Net cash used in investing activities	-36,734,567	-227,923,296	-304,217,892	-46,785,852
Cash flows from financing activities:
Proceeds from issuance of Series D convertible preferred shares, net of issuance costs			306,360,473
Proceeds from the initial public offering, net of issuance cost	101,935,989	632,472,039
Proceeds from the private placement, net of issuance cost	145,954,527	905,589,458
Proceeds from employees exercising stock options	376,360	2,335,161
Net cash provided by financing activities	248,266,876	1,540,396,658	306,360,473
Effect of exchange rate changes on cash and cash equivalents	-491,994	-3,052,623	1,286,468	-740,678
Net increase/(decrease) in cash and cash equivalents	167,346,733	1,038,319,541	120,165,299	-32,863,272
Cash and cash equivalents at the beginning of year	67,595,467	419,402,835	299,237,536	332,100,808
Cash and cash equivalents at the end of year	234,942,200	1,457,722,376	419,402,835	299,237,536
Supplemental disclosure of non-cash investing and financing activities
Accrual related to purchase of property and equipment	1,506,145	9,345,027	116,758	-3,571,903
Deemed dividends to preferred shareholders	2,515,216	15,605,908	59,428,400
Accrued issuance cost related to private placement	2,268,685	14,076,285
Accrual related to deferred initial public offering costs			2,127,187
Receivables related to exercise of stock options	($164,354)	-1,019,748

Organization_and_Principal_Act

Organization and Principal Activities	12 Months Ended
	Dec. 31, 2014
Organization and Principal Activities
Organization and Principal Activities
	1. Organization and Principal Activities
	Tuniu Corporation (the “Company”), an exempted company with limited liability incorporated in the Cayman Islands, (i) its various equity-owned consolidated subsidiaries, (ii) its controlled affiliate Nanjing Tuniu Technology Co., Ltd. (“Nanjing Tuniu” or simply “VIE”), and (iii) the subsidiaries of its controlled affiliate are collectively referred to as the “Group”. The Group’s principal activity is the provision of travel-related services in the People’s Republic of China (“PRC”), primarily through Nanjing Tuniu and the subsidiaries thereof. Nanjing Tuniu and its wholly-owned subsidiaries are collectively referred to as the “Affiliated Entities”.
	As of December 31, 2014, the Company’s principal subsidiaries and consolidated Affiliated Entities are as follows:
	Name of subsidiaries and VIE		Date of establishment/acquisition		Place of		Percentage of
					incorporation		direct or indirect
							economic
							ownership
	Wholly owned subsidiaries of the Company:
	Tuniu (HK) Limited		Established on May 20, 2011		Hong Kong		100	%
	Tuniu (Nanjing) Information Technology Co., Ltd.		Established on August 24, 2011		PRC		100	%
	Beijing Tuniu Technology Co., Ltd. (“Beijing Tuniu”)		Established on September 8, 2008		PRC		100	%
	Variable Interest Entity (“VIE”)
	Nanjing Tuniu Technology Co., Ltd. (“Nanjing Tuniu”)		Established on December 18, 2006		PRC		100	%
	Subsidiaries of Variable Interest Entity (“VIE subsidiaries”)
	Shanghai Tuniu International Travel Service Co., Ltd.		Acquired on August 22, 2008		PRC		100	%
	Nanjing Tuniu International Travel Service Co., Ltd.		Acquired on December 22, 2008		PRC		100	%
	Beijing Tuniu International Travel Service Co., Ltd.		Acquired on November 18, 2009		PRC		100	%
	Nanjing Tuzhilv Tickets Sales Co., Ltd.		Established on April 19, 2011		PRC		100	%
	History of the Group and Basis of Presentation
	The Group commenced operations through Nanjing Tuniu, a PRC company formed in December 2006, which has become its consolidated affiliated entity through the contractual agreements described below.
	Nanjing Tuniu was the predecessor of the Group and operated substantially all of the businesses of the Group prior to September 17, 2008. It is wholly owned by Dunde Yu, the Company’s Chief Executive Officer, Haifeng Yan, the Company’s Chief Operating Officer, and several other PRC citizens.
	In order to facilitate international financing, Tuniu Corporation was incorporated in the Cayman Islands as an exempted company with limited liability in June 2008, and Beijing Tuniu Technology Co., Ltd, or “Beijing Tuniu”, a wholly foreign owned enterprise, was established in September 2008.
	To comply with PRC laws and regulations that limit direct foreign equity ownership of business entities providing value-added telecommunications services and companies involved in internet content, the Company operates its business mainly through Nanjing Tuniu and its subsidiaries. On September 17, 2008, Beijing Tuniu entered into a series of agreements with Nanjing Tuniu and its shareholders. Pursuant to these agreements, Beijing Tuniu has the ability to direct substantially all the activities of Nanjing Tuniu, and absorb substantially all of the risks and rewards of the Affiliated Entities. As a result, the Company is the primary beneficiary of Nanjing Tuniu, and has consolidated the Affiliated Entities.
	There are no other entities where the Company has a variable interest but is not the primary beneficiary.
	Contractual arrangements
	On September 17, 2008, Beijing Tuniu entered into a series of contractual agreements with Nanjing Tuniu and its shareholders. The following is a summary of the agreements which allow the Company to exercise effective control over Nanjing Tuniu:
	(1)Purchase Option Agreement.
	Under the purchase option agreement entered between Beijing Tuniu and the shareholders of Nanjing Tuniu on September 17, 2008, Beijing Tuniu has the irrevocable exclusive right to purchase, or have its designated person or persons to purchase all or part of the shareholders’ equity interests in Nanjing Tuniu at RMB1,800,000 which was increased to RMB2,430,000 in March 2014. The option term remains valid for a period of 10 years and can be extended indefinitely at Beijing Tuniu’s discretion. The purchase consideration was paid by Beijing Tuniu to the shareholders of Nanjing Tuniu shortly after the purchase option agreement was entered. On January 24, 2014, the Company amended and restated the purchase option agreement, and the effective term of the purchase option agreement has been changed to until all equity interests held in Nanjing Tuniu are transferred or assigned to Beijing Tuniu or its designated person or persons.
	(2)Equity Interest Pledge Agreement.
	Under the equity interest pledge agreement entered between Beijing Tuniu and the shareholders of Nanjing Tuniu on September 17, 2008, the shareholders pledged all of their equity interests in Nanjing Tuniu to guarantee their performance of their obligations under the purchase option agreement. If the shareholders of Nanjing Tuniu breach their contractual obligations under the purchase option agreement, Beijing Tuniu, as the pledgee, will have the right to either conclude an agreement with the pledgor to obtain the pledged equity or seek payments from the proceeds of the auction or sell-off of the pledged equity to any person pursuant to the PRC law. The shareholders of Nanjing Tuniu agreed that they will not dispose of the pledged equity interests or create or allow any encumbrance on the pledged equity interests. During the equity pledge period, Beijing Tuniu is entitled to all dividends and other distributions made by Nanjing Tuniu. The equity interest pledge agreement remains effective until the shareholders of Nanjing Tuniu discharge all their obligations under the purchase option agreement, or Beijing Tuniu enforces the equity interest pledge, whichever is earlier.
	(3)Shareholders’ Voting Rights Agreement.
	Under the shareholders’ voting rights agreement entered between Beijing Tuniu and the shareholders of Nanjing Tuniu on September 17, 2008, each of the shareholders of Nanjing Tuniu appointed Beijing Tuniu’s designated person as their attorney-in-fact to exercise all of their voting and related rights with respect to their equity interests in Nanjing Tuniu, including attending shareholders’ meetings, voting on all matters of Nanjing Tuniu, nominating and appointing directors, convene extraordinary shareholders’ meetings, and other voting rights pursuant to the then effective articles of association. The shareholders’ voting rights agreement will remain in force for anunlimited term, unless all the parties to the agreement mutually agree to terminate the agreement in writing or cease to be shareholders of Nanjing Tuniu.
	(4)Irrevocable Powers of Attorney.
	Under the powers of attorney issued by the shareholders of Nanjing Tuniu on September 17, 2008, the shareholders of Nanjing Tuniu each irrevocably appointed Mr. Tao Jiang, a person designated by Beijing Tuniu, as the attorney-in-fact to exercise all of their voting and related rights with respect to their equity interests in Nanjing Tuniu. Each power of attorney will remain in force until the shareholders’ voting rights agreement expires or is terminated. On January 24, 2014, the shareholders of Nanjing Tuniu issued powers of attorney to irrevocably appoint Beijing Tuniu as the attorney-in-fact to exercise all of their voting and related rights with respect to their equity interests in Nanjing Tuniu. These powers of attorney replaced the powers of attorney previously granted to Mr. Tao Jiang on September 17, 2008.
	(5)Cooperation Agreement.
	Under the cooperation agreement entered between Beijing Tuniu and Nanjing Tuniu, Beijing Tuniu has the exclusive right to provide Nanjing Tuniu technology consulting and services related to Nanjing Tuniu’s operations, which require certain licenses. Beijing Tuniu owns the exclusive intellectual property rights created as a result of the performance of this agreement. Nanjing Tuniu agrees to pay Beijing Tuniu a monthly service fee for services performed, and the monthly service fee shall not be lower than 100% of Nanjing Tuniu’s profits generated from such cooperation, which equal revenues generated from such cooperation, after deducting the expenses it incurred. This agreement remains effective for an unlimited term, unless the parties mutually agree to terminate the agreement, one of the parties is declared bankrupt or Beijing Tuniu is not able to provide consulting and services as agreed for more than three consecutive years because of force majeure. On January 24, 2014, the Company amended and restated the Cooperation Agreement. In the amended and restated agreement, the service fee has been changed to a quarterly payment which equals the profits of each of Nanjing Tuniu and its subsidiaries, and that Beijing Tuniu can adjust the service fee at its own discretion. Also in the amended and restated Cooperation Agreement, Beijing Tuniu has the unilateral right to terminate the agreement.
	In the years ended December 31, 2012, 2013 and 2014, the Company received service fees of RMB20,095,534, RMB22,586,880 and RMB20,535,068, respectively, from its consolidated affiliated entities.
	Risks in relation to the VIE structure
	As of December 31, 2014, the aggregate accumulated deficit of the Affiliated Entities was RMB297 million prior to intercompany elimination.
	The following financial statement amounts and balances of the Affiliated Entities were included in the accompanying consolidated financial statements as of December 31, 2013 and 2014 and for the years ended December 31, 2012, 2013 and 2014:
			As of December 31,
			2013		2014
							US$ (Note 2(c))
	ASSETS
	Current assets
	Cash and cash equivalents		80,941,498		102,355,892		16,496,775
	Restricted cash		9,250,000		44,030,000		7,096,348
	Short-term investments		227,000,000		100,000,000		16,117,074
	Accounts receivable, net		1,651,087		8,644,481		1,393,237
	Intercompany receivables		13,746,342		65,474,340		10,552,548
	Prepayments and other current assets		282,575,230		566,731,065		91,340,469
	Total current assets		615,164,157		887,235,778		142,996,451
	Non-current assets
	Property and equipment, net		6,022,935		22,600,370		3,642,518
	Other non-current assets		3,432,475		16,265,031		2,621,447
	Total non-current assets		9,455,410		38,865,401		6,263,965
	Total assets		624,619,567		926,101,179		149,260,416
	LIABILITIES
	Current liabilities
	Accounts payable		288,379,189		373,463,921		60,191,458
	Salary and welfare payable		43,247,478		66,074,540		10,649,283
	Taxes payable		979,842		2,078,879		335,054
	Advances from customers		396,737,968		638,802,791		102,956,321
Intercompany payables		37,678,689		52,114,075		8,399,264
Accrued expenses and other current liabilities		24,088,189		87,657,457		14,127,818
Total current liabilities		791,111,355		1,220,191,663		196,659,198
Total liabilities		791,111,355		1,220,191,663		196,659,198
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
Net revenues		1,115,480,429		1,937,485,065		3,736,473,491		602,210,214
Net loss		(42,581,564	)	(39,596,629	)	(128,298,694	)	(20,677,996	)
Net cash provided by/(used in) operating activities		92,391,338		161,148,389		(51,446,481	)	(8,291,668	)
Net cash provided by/(used in) investing activities		(29,022,592	)	(201,058,056	)	72,160,875		11,630,222
Net cash provided by financing activities		—		—		700,000		112,820
There were no pledges or collateralization of the Affiliated Entities’ assets. Currently there is no contractual arrangement that could require the Company to provide additional financial support to the Affiliated Entities. As the Company is conducting its business mainly through the Affiliated Entities, the Company may provide such support on a discretionary basis in the future, which could expose the Company to a loss.
Under the contractual arrangements with Nanjing Tuniu and through its equity interest in its subsidiaries, the Group has the power to direct the activities of the Affiliated Entities and direct the transfer of assets out of the Affiliated Entities. Therefore, the Group considers that there are no assets of the Affiliated Entities that can be used only to settle their obligations. As the consolidated Affiliated Entities are each incorporated as a limited liability company under the PRC Company Law, the creditors do not have recourse to the general credit of the Company for all of the liabilities of the consolidated Affiliated Entities.
The Group believes that each of the agreements and the powers of attorney under the contractual arrangements among Beijing Tuniu, Nanjing Tuniu and its shareholders is valid, binding and enforceable, and did not, does not and will not result in any violation of PRC laws or regulations currently in effect. The legal opinion of Jun He Law Offices, the Company’s PRC legal counsel, also supports this conclusion. The shareholders of Nanjing Tuniu are also shareholders, nominees of shareholders, or designated representatives of shareholders of the Company and therefore have no current interest in seeking to act contrary to the contractual arrangements. Based on the current facts and circumstances, management believes the likelihood of loss in respect of the Group’s current ownership structure or the contractual arrangements with its VIE is remote. However, uncertainties in the PRC legal system could limit the Company’s ability to enforce these contractual arrangements and if the shareholders of Nanjing Tuniu were to reduce their interest in the Company, their interests may diverge from that of the Company and that may potentially increase the risk that they would seek to act contrary to the contractual terms.
The Company’s ability to control Nanjing Tuniu also depends on the power of attorney Beijing Tuniu has to vote on all matters requiring shareholder approval in Nanjing Tuniu. As noted above, the Company believes this power of attorney is legally enforceable but it may not be as effective as direct equity ownership.
In addition, if the legal structure and contractual arrangements were found to be in violation of any existing PRC laws and regulations, the PRC government could:
	·		levying fines or confiscate the Group’s income;
	·		revoke the Group’s business or operating licenses;
	·		require the Group to discontinue, restrict or restructure its operations;
	·		shut down the Group’s servers or block the Group’s websites and mobile platform;
	·		restrict or prohibit the use of the Group’s financing proceeds to finance its business and operations in China; or
	·		take other regulatory or enforcement actions against the Group that could be harmful to the Group’s business
The imposition of any of these penalties may result in a material and adverse effect on the Group’s ability to conduct the Group’s business. In addition, the imposition of any of these penalties may cause the Group to lose the right to direct the activities of Nanjing Tuniu (through its equity interest in its subsidiaries) or the right to receive economic benefits from the Affiliated Entities. Therefore, a risk exists in that the Group would no longer be able to consolidate Nanjing Tuniu and its subsidiaries. On February 19, 2015, the PRC Ministry of Commerce (“MOFCOM”) published the draft Foreign Investment Law. If enacted as proposed, the Foreign Investment Law may cause the Group’s VIE to be deemed as entities with foreign investment and as a result the Group’s VIE and subsidiaries in which the VIE has direct or indirect equity ownership could become explicitly subject to the current restrictions on foreign investment that engaged in an industry on the negative list. If the enacted version of the foreign investment Law and the final negative list mandate further actions, such as MOFCOM market entry clearance or certain restructuring of corporate structure and operations to be completed by companies with existing VIE structure similar to the one described above, the Group will face substantial uncertainties as to whether these actions can be timely completed, or at all. As a result, the Group’s operating result and financial condition may be adversely affected.
Liquidity
The Group’s consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and liquidation of liabilities during the normal course of operations. The Group incurred net losses of approximately RMB107 million, RMB80 million and RMB448 million in the years ended December 31, 2012, 2013 and 2014, respectively. Net cash provided by / (used in) operating activities was approximately RMB15 million, RMB117 million and (RMB271 million) for the years ended December 31, 2012, 2013 and 2014, respectively. Accumulated deficit was RMB267 million, RMB406 million and RMB869 million as of December 31, 2012, 2013 and 2014, respectively. As of December 31, 2014, the Group had net current assets and management believes that the Group’s available cash, cash equivalents, short-term investments and cash generated from operations will be sufficient to meet working capital requirements and capital expenditures in the ordinary course of business for the next twelve months.

Principal_Accounting_Policies

Principal Accounting Policies	12 Months Ended
	Dec. 31, 2014
Principal Accounting Policies
Principal Accounting Policies
	2. Principal Accounting Policies
	(a) Principles of Consolidation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The consolidated financial statements include the financial statements of the Company, its subsidiaries, the Affiliated Entities for which the Company is the primary beneficiary. Subsidiaries are those entities in which the Company, directly or indirectly, controls more than one half of the voting power, has the power to appoint or remove the majority of the members of the board of directors, or to cast a majority of votes at the meeting of board of directors, or has the power to govern the financial and operating policies of the investee under a statute or agreement among the shareholders or equity holders.
	A VIE is an entity in which the Company, or its subsidiary, through contractual arrangements, bears the risks of, and enjoys the rewards normally associated with, ownership of the entity, and therefore the Company or its subsidiary is the primary beneficiary of the entity. All significant transactions and balances among the Company, its equity-owned subsidiaries, and the VIE and subsidiaries thereof have been eliminated in consolidation.
	(b) Use of Estimates
	The preparation of the Company’s consolidated financial statements in conformity with the U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities. Actual results could differ materially from those estimates. Significant accounting estimates reflected in the Company’s consolidated financial statements mainly include revenue recognition, estimating useful lives and impairment for property and equipment, losses due to committed tour reservations, the valuation allowance for deferred tax assets, the determination of uncertain tax positions.
	(c) Functional Currency and Foreign Currency Translation
	The Group uses Renminbi (“RMB”) as its reporting currency. The functional currency of the Company and its subsidiaries incorporated outside of PRC is the United States dollar (“US$”), while the functional currency of the PRC entities in the Group is RMB as determined based on ASC 830, Foreign Currency Matters.
	Transactions denominated in other than the functional currencies are re-measured into the functional currency of the entity at the exchange rates prevailing on the transaction dates. Foreign currency denominated financial assets and liabilities are re-measured at the balance sheet date exchange rate. The resulting exchange differences are included in the consolidated statements of comprehensive loss as foreign exchange related gains / loss.
	Assets and liabilities of the Company and its subsidiaries incorporated outside of PRC are translated into RMB at fiscal year-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the respective fiscal years. Translation adjustments arising from these are reported as foreign currency translation adjustments and are shown as a component of accumulated other comprehensive income or loss in the consolidated statement of changes in shareholders’ equity/(deficit).
	The unaudited United States dollar amounts disclosed in the accompanying financial statements are presented solely for the convenience of the readers. Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the rate of US$1.00 =MB6.2046 on December 31, 2014, as set forth in H.10 statistical release of the Federal Reserve Board. No representation is made that the RMB amounts could have been, or could be, converted into US$ at that rate on December 31, 2014, or at any other rate.
	(d) Fair Value Measurement
	Accounting guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and it considers assumptions that market participants would use when pricing the asset or liability.
	Accounting guidance establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. A three-tier value hierarchy prioritizes the inputs used in measuring fair value as follows:
	Level 1—Observable inputs that reflect quoted prices for identical assets or liabilities in active markets
	Level 2—Inputs other than the quoted prices in active markets observable either directly or indirectly
	Level 3—Unobservable inputs which are supported by little or no market data
	The Group’s financial instruments include cash and cash equivalents, short-term investments, accounts receivable, accounts payable, advances from customers, and certain accrued liabilities and other current liabilities. The carrying values of these financial instruments approximated their fair values due to the short-term maturity of these instruments.
	(e) Cash and Cash Equivalents
	Cash and cash equivalents represent cash on hand and demand deposits placed with banks or other financial institutions, which are unrestricted as to withdrawal or use.  The following table sets forth a breakdown of cash and cash equivalents by currency denomination and jurisdiction as of December 31, 2013 and 2014:
		RMB			RMB Equivalent (US$)			RMB Equivalent (HK$)			Total in RMB
		Overseas	China		Overseas	China		Overseas	China
			Non VIE	VIE		Non VIE	VIE		Non VIE	VIE
	December 31, 2013	294,051,240	14,280,676	80,573,735	29,047,618	953,126	367,763	128,677	—	—	419,402,835
	December 31, 2014	1,810,709	6,410,240	102,338,960	1,323,654,351	23,309,701	16,932	181,483	—	—	1,457,722,376
	(f) Restricted Cash
	Restricted cash represents cash that cannot be withdrawn without the permission of third parties. The Group’s restricted cash arises from cash deposits required by tourism administration departments as a pledge to secure travelers’ rights and interests, and those required by the Group’s business partners for business operations.
	(g) Short-term Investments
	Short-term investments are comprised of investments in financial products issued by banks or other financial institutions, which contain a fixed or variable interest rate. Such investments are generally not permitted to be redeemed early or are subject to penalties for redemption prior to maturity. The Group classifies these investments as held-to-maturity as it has both the positive intent and ability to hold them until maturity. Held-to-maturity securities are reported at amortized cost, and are subject to impairment tests. Given the short-term nature, the carrying value of short-term investments approximates their fair value. There was no other-than-temporary impairment of short-term investments in the years ended December 31, 2012, 2013 and 2014.
	(h) Accounts Receivable
	The Group’s accounts receivable mainly consist of amounts due from the corporate customers, insurance companies and travel boards or bureaus, which are carried at the original invoice amount less an allowance for doubtful accounts. The Group reviews the accounts receivable on a periodic basis and makes allowances when there is doubt as to the collectability of individual balances. The Group evaluates the collectability of accounts receivable considering many factors including reviewing accounts receivable balances, historical bad debt rates, payment patterns, counterparties’ credit worthiness and financial conditions, and industry trend analysis. No allowance for doubtful accounts was provided as of December 31, 2013 and 2014 as the Group believes that it is probable the accounts receivable will be fully collected.
	(i) Advances from Customers
	Customers pay in advance to purchase travel services. Cash proceeds received from customers are initially recorded as advances from customers and are recognized as revenues when revenue recognition criteria are met.
	(j) Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation and impairment if applicable. Property and equipment are depreciated over the estimated useful lives on a straight-line basis. The estimated useful lives are as follows:
	Category	Estimated useful life
	Computers and equipment	3 years
	Furniture and fixtures	3 - 5 years
	Software	5 years
	Leasehold improvements	Over the shorter of the lease term or the estimated useful life of the asset 1 – 9 years
	Gain or loss on the disposal of property and equipment is the difference between the net sales proceeds and the carrying amount of the relevant assets and is recognized in the consolidated statements of comprehensive loss.
	(k) Capitalized Software Development Cost
	The Company has capitalized certain costs related to internally developed software used for supplier management and customer purchase interface in accordance with ASC 350-40, Internal-use software, which requires the capitalization of costs relating to certain activities of developing internal-use software that occur during the application development stage. Capitalized internal-use software costs are stated at cost less accumulated amortization and the amount is included in “property and equipment, net” on the consolidated balance sheets, with an estimated useful life of five years. Software development cost capitalized amounted to nil, RMB980,187 and RMB6,836,756 for the years ended December 31, 2012, 2013 and 2014, respectively. Costs capitalized mainly include payroll and payroll-related costs for employees who are directly associated with and who devoted time to the internal-use software projects during the application development stage. The amortization expense for capitalized software costs amounted to nil, RMB73,833 and RMB727,073 for the year ended December 31, 2012, 2013 and 2014, respectively. The unamortized amount of capitalized internal use software development costs was RMB7,016,037 as of December 31, 2014.
	(l) Intangible Assets
	Intangible assets with definite lives are recorded at carrying value, which represents original cost less accumulated amortization and impairment if applicable, and are recorded in “other non-current assets”. The intangible assets are amortized on a straight-line basis over their estimated useful lives.
	(m) Impairment of long-lived assets
	The Group evaluates its long-lived assets and finite lived intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When these events occur, the Group measures impairment by comparing the carrying amount of the assets to future undiscounted net cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flows is less than the carrying amount of the assets, the Group recognizes an impairment loss equal to the difference between the carrying amount and fair value of these assets. No impairment of long-lived assets was recognized during the year ended December 31, 2012, 2013 and 2014.
	(n) Revenue Recognition
	The Group’s revenue is primarily derived from sales of organized tours and self-guided tours, and other service fees. Revenue is recognized when the following criteria are met: persuasive evidence of an arrangement exists, the sales price is fixed or determinable, service has been provided, and collectability is reasonably assured in accordance with ASC 605, Revenue Recognition.
	Organized tours: Substantially all of revenue from organized tours is recognized on a gross basis, as the Group is the primary obligor in the arrangement and bears the risks and rewards, including the customer’s acceptance of services delivered. Such commitments are made in the contract the Group enters with its customers. Even though the Group does not generally assume inventory risk of purchasing travel services before customers place an order, the Group is the party retained by and paid by its customers, and the Group is responsible for (and solely authorized to) refunding customers their payments in situations of customer disputes. Further, the Group independently selects travel service suppliers, and determines the prices charged to customers and paid to its travel suppliers. Revenue from organized tours is recognized when the tours end as service rendering is only considered completed upon conclusion of the entire organized tour.
	Self-guided tours: Revenue from self-guided tours is recognized on a net basis, representing the difference between what the Group receives from its customers and the amounts due to its travel suppliers. In the self-guided tour arrangements, the Group generally does not assume inventory risk, has limited involvement in determining the service, and provides limited additional services to customers. Suppliers are responsible for all aspects of providing the air transportation and hotel accommodation. As such, the Group concludes that it is an agent for the travel service providers in these transactions and revenues are reported on a net basis. Revenue from self-guided tours is recognized when the tours end as commissions are not earned until this time according to the contractual arrangements the Group entered into with its travel suppliers.
	Other revenues: Other revenues is primarily derived from the service fee received from insurance companies, visa processing services and the advertising services to domestic and foreign tourism boards and bureaus on its online platform.  Revenue is recognized when the services are rendered.
	The Company does not recognize revenue if customer refunds are warranted due to customer satisfaction issues or other reasons, which is generally known at the end of each tour when revenues are recognized. In the event of tour cancellation by customers, the liability associated with prepayments received from customers remains on the Group’s consolidated balance sheets until refunds are issued.
	Customer incentives
	From time to time customers are offered coupons, travel vouchers, membership points, or cash rewards as customer incentives. The Group accounts for these customer incentives in accordance with ASC 605-50, Customer Payments and Incentives. For coupons and travel vouchers offered where prior purchase is not required, the Group accounts for them as a reduction of revenue when revenue is recognized. The Group assessed coupons and vouchers offered to customers as part of a current purchase that give customers a right, but do not obligate customers to make future purchases, and concluded the discounts offered are insignificant; as such, no deferral of revenue is considered necessary.
	For membership points earned by customers as part of the customer reward program which provides travel awards upon point redemption, the Group estimates the incremental costs associated with the Group’s future obligation to its customer, and records them as sales and marketing expense in the consolidated statements of comprehensive loss.
	Unredeemed membership points are recorded in other current liabilities in the consolidated balance sheets. Cash rewards earned by customers are recorded as a reduction to revenue, with corresponding unclaimed amount recorded in other current liabilities. The Company adjusts the liability when the membership points and cash rewards remain unclaimed upon program expiration, which is typically two years from the day the membership points and cash rewards are awarded. As of December 31, 2013 and 2014, liabilities recorded related to membership points and cash rewards are, RMB5,760,470 and RMB14,763,617, respectively.
	Business and related taxes
	The Group is subject to business and related taxes on services provided in the PRC at applicable rates, which are recorded as a reduction of revenues.
	In November 2011, the Ministry of Finance released Circular Caishui [2011] No. 111 mandating Shanghai to be the first city to carry out a pilot program of tax reform. Effective January 1, 2012, any entity that carries out selected modern services in Shanghai is required to pay value-added tax (“VAT”) instead of business tax. The pilot program has been expanded to other regions, including Beijing from September 1, 2012 and Nanjing from October 1, 2012. Beijing Tuniu, Nanjing Tuniu and Tuniu (Nanjing) Information Technology Co., Ltd. have been subject to VAT at a rate of 6% and have since stopped paying the 5% business tax from the respective effective dates of the tax reform.
	(o) Cost of Revenues
	Cost of revenues mainly consists of costs to suppliers of organized tours, and salaries and other compensation-related expenses related to the Group’s tour advisors, customer services representatives, and other personnel related to tour transactions.
	Committed tour reservations
In order to secure availabilities of organized tours and self-guided tours during peak seasons such as holiday periods, the Group may enter into certain contractual commitments with suppliers to reserve tours for selected destinations. The Group is required to pay a deposit to ensure tour availabilities, and such prepayment is record in prepayments and other current assets on the consolidated balance sheets. Some of these contractual commitments are non-cancellable, and to the extent the reserved tours are not sold to customers, the Group would be liable to pay suppliers a pre-defined or negotiated penalty, thereby assuming inventory risks. Management estimates losses of the committed tour reservations on a periodic basis based on contractual terms and historical experience, and record such losses in the period the loss is considered probable. For the years ended December 31, 2012, 2013 and 2014, losses recorded in “cost of revenues” in the consolidated statements of comprehensive loss amounted to RMB1,567,087, RMB6,681,730 and RMB4,134,149, respectively.
(p) Advertising Expenses
Advertising expenses, which primarily consist of online marketing expense and brand marketing expenses through various other forms of media, are recorded in sales and marketing expenses as incurred.  Advertising expense were RMB52,112,680, RMB103,142,138 and RMB379,205,377 for the years ended December 31, 2012, 2013 and 2014, respectively.
(q) Research and Product Development Expenses
Research and product development expenses include salaries and other compensation-related expenses to the Group’s research and product development personnel, as well as office rental, depreciation and related expenses and travel-related expenses for the Group’s research and product development team. The Group recognizes software development costs in accordance with ASC 350-40 “Software—internal use software”. The Group expenses all costs that are incurred in connection with the planning and implementation phases of development, and costs that are associated with repair or maintenance of the existing websites or software for internal use. Certain costs associated with developing internal-use software are capitalized when such costs are incurred within the application development stage of software development. See 2(k) Capitalized Software Development Cost for additional information.
(r) Leases
A lease for which substantially all the benefits and risks incidental to ownership remain with the lessor is classified as an operating lease. All leases of the Group are currently classified as operating leases. When a lease contains rent holidays or requires fixed escalations of the minimum lease payments, the Group records the total rental expense on a straight-line basis over the lease term and the difference between the straight-line rental expense and cash payment under the lease is recorded as deferred rent liabilities. As of December 31, 2013 and 2014, deferred rent of nil and RMB4,243,520, were recorded as current liabilities and RMB19,870,002 and RMB22,278,479 were recorded as non-current liabilities, respectively.
(s) Share-based Compensation
The Company applies ASC 718, Compensation — Stock Compensation to account for its share-based compensation program. In accordance with the guidance, the Company determines whether a share-based award should be classified and accounted for as a liability award or equity award. All grants of share-based awards to employees classified as equity awards are recognized in the financial statements based on their grant date fair values which are calculated using the binominal option pricing model. Share-based compensation expenses are recorded net of an estimated forfeiture rate over the service period using the straight-line method.
The Company’s 2008 Incentive Compensation Plan allows the plan administrator to grant options and restricted shares to the Company’s employees, directors, and consultants. The plan administrator is the Company’s board of directors or a committee appointed and determined by the board. The board may also authorize one or more officers of the Company to grant awards under the plan. Under the 2008 Incentive Compensation Plan, options granted to employees vest upon satisfaction of a service condition, which is generally satisfied over four years. Additionally, the incentive plan provides an exercisability clause where employees can only exercise vested options upon the occurrence of the following events: (i) after the Company’s ordinary shares has become a listed security, (ii) in connection with or after a triggering event (defined as a sale, transfer, or disposition of all or substantially all of the Company’s assets, or a merger, consolidation, or other business combination transaction), or (iii) if the optionee obtains all necessary governmental approvals and consents required. Options for which the service condition has been satisfied are forfeited should employment terminate three months prior to the occurrence of an exercisable event, which substantially creates a performance condition. This performance condition was met upon completion of the Company’s initial public offering, and the associated share-based compensation expense for awards vested as of that date were recognized on May 9, 2014.
In April 2014, the Company adopted the 2014 Share Incentive Plan, which contains no such exercisability clause. For detail of the 2014 Share Incentive Plan, please refer to note 10 of the consolidated financial statements.
The Group recognized share-based compensation expense of RMB39,172,678 in the year ended December 31, 2014, which was classified as follows:
	For the Years Ended December 31,
	2012	2013	2014
				US$ (Note 2(c))
Cost of revenue	—	—	799,880	128,917
Research and product development	—	—	1,971,655	317,773
Sales and marketing	—	—	856,858	138,100
General and administrative	—	—	35,544,285	5,728,699
Total	—	—	39,172,678	6,313,489
(t) Income Taxes
Current income taxes are provided on the basis of net income for financial reporting purposes, adjusted for income and expense items which are not assessable or deductible for income tax purposes, in accordance with the regulations of the relevant tax jurisdictions. Deferred income taxes are provided using the liability method. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. The tax base of an asset or liability is the amount attributed to that asset or liability for tax purposes. The effect on deferred taxes of a change in tax rates is recognized in the interim condensed consolidated statements of comprehensive loss in the period of change. A valuation allowance is provided to reduce the amount of deferred tax assets if it is considered more likely than not that some portion of, or all of the deferred tax assets will not be realized.
Uncertain tax positions
The guidance prescribes a more likely than not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Guidance also provides for the derecognition of income tax assets and liabilities, classification of current and deferred income tax assets and liabilities, accounting for interest and penalties associated with tax positions, accounting for income taxes in interim periods, and income tax disclosures. Significant judgment is required in evaluating the Group’s uncertain tax positions and determining its provision for income taxes. As of December 31, 2013 and 2014, the Group did not have any significant unrecognized uncertain tax positions or any interest or penalties associated with tax positions.
In order to assess uncertain tax positions, the Group applies a more likely than not threshold and a two-step approach for the tax position measurement and financial statement recognition. Under the two-step approach, the first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon settlement.
(u) Employee Benefits
Full-time employees of the Group in the PRC are entitled to welfare benefits including pension, work-related injury benefits, maternity insurance, medical insurance, unemployment benefit and housing fund plans through a PRC government-mandated defined contribution plan. Chinese labor regulations require that the Group makes contributions to the government for these benefits based on certain percentages of employees’ salaries, up to a maximum amount specified by the local government. The Group has no legal obligation for the benefits beyond the contributions. The Group recorded employee benefit expenses of RMB21,287,847, RMB24,058,067 and RMB50,616,782 for the years ended December 31, 2012, 2013 and 2014, respectively.
(v) Government Subsidies
Government subsidies are cash subsidies received by the Group’s entities in the PRC from provincial and local government authorities. The government subsidies are granted from time to time at the discretion of the relevant government authorities. These subsidies are granted for general corporate purposes and to support the Group’s ongoing operations in the region. Cash subsidies are recorded in other operating income on the consolidated statements of comprehensive loss when received and when all conditions for their receipt have been satisfied. The Group recognized government subsidies of RMB773,727, RMB1,688,560 and RMB6,901,814 in the years ended December 31, 2012, 2013 and 2014, respectively.
(w) Earnings (Loss) Per Share
Basic earnings (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period using the two-class method. Under the two-class method, net income is allocated between ordinary shares and other participating securities based on their participating rights. Net loss is not allocated to other participating securities if based on their contractual terms they are not obligated to share in the losses. Diluted earnings (loss) per share is calculated by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary and dilutive ordinary equivalent shares outstanding during the period. Ordinary equivalent shares consist of shares issuable upon the conversion of the preferred shares using the if-converted method, and shares issuable upon the exercise of share options using the treasury stock method. Ordinary equivalent shares are not included in the denominator of the diluted loss per share calculation when inclusion of such shares would be anti-dilutive.
(x) Comprehensive Income (Loss)
Comprehensive income (loss) is defined as the change in equity of the Group during a period arising from transactions and other events and circumstances excluding transactions resulting from investments by shareholders and distributions to shareholders. Comprehensive income or loss is reported in the consolidated statements of comprehensive loss. Accumulated other comprehensive income (loss), as presented on the accompanying consolidated balance sheets, consists of accumulated foreign currency translation adjustments.
(y) Segment Reporting
In accordance with ASC 280, Segment Reporting, the Company’s chief operating decision maker, the Chief Executive Officer, reviews the consolidated results when making decisions about allocating resources and assessing performance of the Company as a whole and hence, the Company has only one reportable segment.
The Company does not distinguish between markets or segments for the purpose of internal reporting. The Company’s long-lived assets are substantially all located in the PRC and substantially all the Company’s revenues are derived from within the PRC, therefore, no geographical segments are presented.
(z) Deferred Offering Costs
Deferred offering costs consisted principally of legal, printing and registration costs in connection with the initial public offering (“IPO”) of Tuniu Corporation’s ordinary shares. Such costs were deferred until the closing of the offering, at which time the deferred costs were offset against the offering proceeds. In the event the offering was unsuccessful or aborted, the costs would be expensed. Deferred offering costs as of December 31, 2013 amounted to RMB2,127,187 were included in other non-current assets on the consolidated balance sheets. Such deferred offering costs were recorded as a reduction to the IPO proceeds upon completion of the Company’s IPO in May 2014.
(aa) Recently Issued Accounting Pronouncements
In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, “Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity”. This update changed the threshold for reporting discontinued operations and added new disclosures for disposals. Under the updated guidance, a discontinued operation is defined as a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2014. The Group is in the process of evaluating the impact of adopting this guidance.
In May 2014, the FASB and International Accounting Standards Board (“IASB”) issued their converged standard on revenue recognition. The objective of the revenue standard ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” is to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. The revenue standard contains principles that an entity will apply to determine the measurement of revenue and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. For public companies, the revenue standard is effective for the first interim period within annual reporting periods beginning after December 15, 2016 and early adoption is not permitted. The Group is in the process of evaluating the impact of adopting this guidance.
In August 2014, the FASB issued ASU 2014-15, which provides guidance on determining when and how reporting entities must disclose going-concern uncertainties in their financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements (or within one year after the date on which the financial statements are available to be issued, when applicable). Further, an entity must provide certain disclosures if there is “substantial doubt about the entity’s ability to continue as a going concern.” The ASU is effective for annual periods ending after December 15, 2016, and interim periods thereafter; early adoption is permitted. The Group is in the process of evaluating the impact of adopting this guidance.
In February 2015, the FASB issued ASU No. 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis” (“ASU 2015-02”). ASU 2015-02 focuses on the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. The ASU simplifies consolidation accounting by reducing the number of consolidation models from four to two. In addition, the new standard simplifies the FASB Accounting Standards Codification and improves current guidance by: (i) placing more emphasis on risk of loss when determining a controlling financial interest; (ii) reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a VIE; and (iii) changing consolidation conclusions for public and private companies in several industries that typically make use of limited partnerships or VIEs. The ASU will be effective for periods beginning after December 15, 2015, for public companies. Early adoption is permitted, including adoption in an interim period.  The Group is in the process of evaluating the impact of adopting this guidance.

Risks_and_Concentration

Risks and Concentration	12 Months Ended
	Dec. 31, 2014
Risks and Concentration
Risks and Concentration
	3. Risks and Concentration
	(a) Credit and Concentration Risks
	The Group’s credit risk arises from cash and cash equivalents, restricted cash, short-term investments, prepayments and other current assets, and accounts receivables. The carrying amounts of these financial instruments represent the maximum amount of loss due to credit risk.
	The Group expects that there is no significant credit risk associated with the cash and cash equivalents and short-term investments which are held by reputable financial institutions in the jurisdictions where the Company, its subsidiaries and the Affiliated Entities are located. The Group believes that it is not exposed to unusual risks as these financial institutions have high credit quality.
	The Group has no significant concentrations of credit risk with respect to its customers, as customers usually prepay for travel services. Accounts receivable are typically unsecured and are primarily derived from revenue earned from corporate customers, insurance companies and travel boards or bureaus. The risk with respect to accounts receivable is mitigated by credit evaluations performed on the corporate customers and insurance companies and ongoing monitoring processes on outstanding balances. No individual customer accounted for more than 10% of net revenues in the years ended December 31, 2012, 2013 and 2014.
	The following table summarized customers with greater than 10% of the accounts receivables:
		As of December 31,
		2013	2014
	Customer A	*	26.0	%
	*Less than 10%
	(b) Foreign Currency Risk
	The Group’s operating transactions and its assets and liabilities are mainly denominated in RMB. RMB is not freely convertible into foreign currencies. The value of RMB is subject to changes influenced by central government policies, and international economic and political developments. In the PRC, certain foreign exchange transactions are required by law to be transacted only by authorized financial institutions at exchange rates set by the People’s Bank of China (the “PBOC”). Remittances in currencies other than RMB by the Group in China must be processed through the PBOC or other China foreign exchange regulatory bodies which require certain supporting documentation in order to effect the remittance.

Prepayments_and_Other_Current_

Prepayments and Other Current Assets	12 Months Ended
	Dec. 31, 2014
Prepayments and Other Current Assets
Prepayments and Other Current Assets
	4. Prepayments and Other Current Assets
	The following is a summary of prepayments and other current assets:
		As of December 31,
		2013	2014
				US$ (Note 2(c))
	Prepayments to suppliers	274,418,870	498,298,101	80,311,076
	Interest income receivable	3,767,451	6,509,860	1,049,199
	Prepayment for advertising expenses	3,007,874	53,664,403	8,649,132
	Others	5,366,052	16,824,542	2,711,624
	Total	286,560,247	575,296,906	92,721,031

Property_and_Equipment_Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2014
Property and Equipment, net
Property and Equipment, net
	5. Property and Equipment, Net
	The following is a summary of property and equipment, net:
		As of December 31,
		2013		2014
						US$ (Note 2(c))
	Computers and equipment	25,307,217		43,961,251		7,085,268
	Leasehold improvements	19,649,572		43,684,247		7,040,623
	Furniture and fixtures	3,212,488		6,342,892		1,022,289
	Software	3,537,387		11,919,553		1,921,083
	Subtotal	51,706,664		105,907,943		17,069,262
	Less: Accumulated depreciation	(26,855,361	)	(36,542,052	)	(5,889,510	)
	Property and equipment subject to depreciation	24,851,303		69,365,891		11,179,752
	Construction in progress	—		2,944,399		474,551
	Total	24,851,303		72,310,290		11,654,303
	Depreciation and amortization expenses for the years ended December 31, 2012, 2013 and 2014 was RMB10,111,622, RMB8,764,423 and RMB10,868,838, respectively. The construction in progress balance as of December 31, 2014 is primarily comprised of leasehold improvements relating to the additional office space at the Group’s headquarter office which is still under construction.

Accrued_Expenses_and_Other_Cur

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2014
Accrued Expenses and Other Current Liabilities
Accrued Expenses and Other Current Liabilities
	6. Accrued Expenses and Other Current Liabilities
	The following is a summary of accrued expenses and other current liabilities:
		As of December 31,
		2013	2014
				US$ (Note 2(c))
	Deposits from customers	11,320,500	27,807,294	4,481,722
	Deposits from suppliers	210,000	5,920,160	954,157
	Accrued liabilities related to customers incentive program	5,760,470	14,763,617	2,379,463
	Accrued professional service fees	3,467,453	18,360,616	2,959,194
	Accrued sales and marketing expenses	3,029,033	12,455,256	2,007,423
	Funds collected on behalf of insurance companies	670,917	4,495,481	724,540
	Advanced payments received from banks	792,104	11,036,168	1,778,707
	Others	4,481,613	15,021,524	2,421,031
	Total	29,732,090	109,860,116	17,706,237
	Deposits from customers represent cash paid to the Group as a deposit for international tours, and such amount is refundable upon completion of the tours.
	Advanced payments received from banks represent cash received by the Company for promotional and marketing campaigns. Banks participating in these campaigns would reimburse the Group for tours sold to their credit card holders at a specified discount.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes
Income Taxes
	7. Income Taxes
	The Company is registered in the Cayman Islands. The Company generated substantially all of its income (loss) from its PRC operations for the years ended December 31, 2012, 2013 and 2014.
	Cayman Islands (“Cayman”)
	Under the current laws of the Cayman Islands, the Company is not subject to tax on income or capital gain. Additionally, upon payments of dividends to shareholders, no Cayman Islands withholding tax will be imposed.
	Hong Kong
	Entities incorporated in Hong Kong are subject to Hong Kong profits tax at a rate of 16.5% since January 1, 2010. The operations in Hong Kong have incurred net accumulated operating losses for income tax purposes.
	PRC
	On March 16, 2007, the National People’s Congress of the PRC enacted an Enterprise Income Tax Law (“EIT Law”), under which Foreign Investment Enterprises (“FIEs”) and domestic companies would be subject to EIT at a uniform rate of 25%. The EIT law became effective on January 1, 2008.
	The EIT Law also provides that an enterprise established under the laws of a foreign country or region but whose “de facto management body” is located in the PRC be treated as a resident Enterprise for PRC tax purposes and consequently be subject to the PRC income tax at the rate of 25% for its global income. The implementing Rules of the EIT Law merely define the location of the “de facto management body” as “the place where the exercising, in substance, of the overall management and control of the production and business operation, personnel, accounting, properties, etc., of a non-PRC company is located.”
	The EIT Law also imposes a withholding income tax of 10% on dividends distributed by a FIE to its immediate holding company outside of China, if such immediate holding company is considered as a non-resident enterprise without any establishment or place within China or if the received dividends have no connection with the establishment or place of such immediate holding company within China, unless such immediate holding company’s jurisdiction of incorporation has a tax treaty with China that provides for a different withholding arrangement. The Cayman Islands, where the Company incorporated, does not have such tax treaty with China. According to the arrangement between Mainland China and Hong Kong Special Administrative Region on the Avoidance of Double Taxation and Prevention of Fiscal Evasion in August 2006, dividends paid by a FIE in China to its immediate holding company in Hong Kong will be subject to withholding tax at a rate of no more than 5% if the immediate holding company in Hong Kong owns directly at least 25% of the shares of the FIE and could be recognized as a Beneficial Owner of the dividend from PRC tax perspective.
	Nanjing Tuniu obtained in 2010 its HNTE certificate with a valid period of three years and successfully renewed such certificate in December 2013 for additional three years. Therefore, Nanjing Tuniu is eligible to enjoy a preferential tax rate of 15% from 2013 to 2015 to the extent it has taxable income under the EIT Law, as long as it maintains the HNTE qualification and duly conducts relevant EIT filing procedures with the relevant tax authority. Nanjing Tuniu also obtained a software company certificate in 2012. Pursuant to such certificate, Nanjing Tuniu qualifies for a tax holiday during which it is entitled to an exemption from enterprise income tax for two years commencing from its first profit-making year of operation and a 50% reduction of enterprise income tax for the following three years. Nanjing Tuniu has entered into the first tax profitable year for the year ended December 31, 2014.
	A reconciliation between the effective income tax rate and the PRC statutory income tax rate is as follows:
		For the Years Ended December 31,
		2012		2013		2014
		%		%		%
	PRC Statutory income tax rates	25		25		25
	Change in valuation allowance	(19.9	)	(20.1	)	(22.4	)
	Permanent book — tax difference	(5.2	)	(4.9	)	(12.1	)
	Difference in EIT rates of certain subsidiaries	0		0		0
	Effect of tax holiday	—		—		9.5
	Total	(0.1	)	0		0
	The aggregate amount and per share effect of the tax holidays are as follows:
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Aggregate amount	—		—		(42,567,098	)	(6,860,571	)
	Basic net loss per share effect	—		—		(0.40	)	(0.06	)
	Diluted net loss per share effect	—		—		(0.40	)	(0.06	)
	The following table sets forth the significant components of deferred tax assets and liabilities:
		As of December 31,
		2013		2014
						US$ (Note 2(c))
	Current deferred tax assets:
	Accruals and others	3,726,090		16,299,132		2,626,943
	Less: valuation allowance	(3,726,090	)	(16,299,132	)	(2,626,943	)
	Total current deferred tax assets, net	—		—		—
	Non-current deferred tax assets:
	Net operating loss carry forwards	40,980,595		133,592,894		21,531,266
	Carryforwards of un-deducted advertising expenses	1,414,030		925,081		149,096
	Subtotal	42,394,625		134,517,975		21,680,362
	Less: valuation allowance	(42,394,625	)	(134,517,975	)	(21,680,362	)
	Total non-current deferred tax assets, net	—		—		—
	As of December 31, 2014, the Group had net operating loss carryforwards of RMB534,371,576 which can be carried forward to offset taxable income. The carryforwards period for net operating losses under the EIT Law is five years. The net operating loss carry forward of the Group will start to expire in 2015 for the amount of RMB7,990,793 if not utilized. The remaining net operating loss carryforwards will expire in varying amounts between 2016 and 2019. There is no expiration for the advertising expenses carryforwards. Other than the expiration, there are no other limitations or restrictions upon the Group’s ability to use these operating loss carryforwards.
	A valuation allowance is provided against deferred tax assets when the Group determines that it is more likely than not that the deferred tax assets will not be utilized in the future. In making such determination, the Group evaluates a variety of factors including the Group’s operating history, accumulated deficit, existence of taxable temporary differences and reversal periods.
	As of December 31, 2013 and 2014, valuation allowances of RMB46,120,715 and RMB150,817,107 were provided because it was more likely than not that the Group will not be able to utilize certain tax losses carry forwards and other deferred tax assets generated by its subsidiaries and Affiliated Entities. If events occur in the future that allow the Group to realize more of its deferred tax assets than the presently recorded amount, an adjustment to the valuation allowances will increase income when those events occur.
	Movement of valuation allowance
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Balance as the beginning of the year	23,627,054		34,315,042		46,120,715		7,433,310
	Additions	10,687,988		11,805,673		112,421,222		18,119,012
	Utilization of previously unrecognized tax losses and un-deductible advertising expenses	—		—		(7,724,830	)	(1,245,017	)
	Balance as the end of the year	34,315,042		46,120,715		150,817,107		24,307,305

Convertible_Preferred_Shares

Convertible Preferred Shares	12 Months Ended
	Dec. 31, 2014
Convertible Preferred Shares
Convertible Preferred Shares
	8. Convertible Preferred Shares
	In August 2008, the Company entered into an agreement with Gobi Fund II L.P. (“Gobi”) and issued 20,000,000 Series A Convertible Preferred Shares (“Series A Preferred Shares”) at the purchase price of US$0.10 (RMB0.68) per share for a total consideration of US$2,000,000 (RMB13,660,360) in cash.
	In December 2009, the Company entered into a series of agreements with DCM V, L.P., DCM Affiliates Fund V, L.P. ( “DCM”) and Gobi and issued 21,564,115 Series B Convertible Preferred Shares (“Series B Preferred Shares”) at the purchase price of US$0.3478 (RMB2.37) per share for a total consideration of US$7,500,000 (RMB51,211,500) in cash.
	In March 2011, the Company entered into a series of agreements with four institutional investors and issued 25,782,056 Series C Convertible Preferred Shares (“Series C Preferred Shares”) at the purchase price of US$1.7454 (RMB11.45) per share for a total consideration of US$45,000,000 (RMB295,183,500) in cash.
	In August 2013, the Company entered into an agreement with Esta Investments Pte Ltd (“Esta”) and issued 18,142,893 Series D Convertible Preferred Shares (“Series D Preferred Shares”) at the purchase price of US$2.7559 (RMB16.99) per share for a total consideration of US$50,000,000 (RMB308,328,500) in cash. Series A Preferred Shares, Series B Preferred Shares, Series C Preferred Shares and Series D Preferred Shares are collectively referred to as “Convertible Preferred Shares.”
	Accounting for Convertible Preferred Shares
	The Convertible Preferred Shares are redeemable upon a liquidation event, including a deemed liquidation event (e.g., change in control), and as such are presented as mezzanine equity on the consolidated balance sheets. In accordance with ASC 480-10-S99, each issuance of the Convertible Preferred Shares should be recognized at the respective issue price at the date of issuance net of issuance costs. The issuance costs for Series A, Series B, Series C, and Series D Preferred Shares were US$26,755 (RMB182,576), US$340,000 (RMB2,321,384), US$755,000 (RMB4,927,809), and US$335,123 (RMB2,059,507), respectively. Since the Convertible Preferred Shares are not redeemable until the occurrence of a liquidation event, no subsequent accretion to the respective redemption values is necessary until it is probable a liquidation event is to occur. To-date, no liquidation or deemed liquidation events have occurred or are probable. Accordingly there have been no accretive costs to the convertible preferred shares have been recorded for the periods presented.
	The preferred shareholders have the ability to convert the Convertible Preferred Shares into the Company’s ordinary shares at any time, at the option of the holder, on a one to one share basis. Upon the occurrence of certain events, the conversion ratio may be subsequently adjusted. The Company evaluated the embedded conversion option in the Convertible Preferred Shares to determine if there were any embedded derivatives requiring bifurcation. The conversion options of the Convertible Preferred Shares do not qualify for bifurcation accounting because the underlying ordinary shares are not publicly traded nor are they readily convertible into cash. There are no other embedded derivatives that are required to be bifurcated. As the Convertible Preferred Shares are convertible at any time at the option of the holder and the embedded conversion options are not bifurcated, the Convertible Preferred Shares were further evaluated to determine if there were any Beneficial Conversion Features (“BCF”). BCFs exist when the accounting conversion price of the Convertible Preferred Shares is lower than the fair value of the Company’s ordinary shares at the commitment date. The Company has determined that there was no BCF attributable to any of the Convertible Preferred Shares because the initial accounting conversion prices were higher than the fair value of the Company’s ordinary shares determined. The fair value of the Company’s ordinary shares on the commitment date was estimated by the Company with the assistance of an independent valuation firm. The Company will continue to assess any potential BCF which could result from potential changes in conversion price upon the occurrence of certain events. There have been no events that would trigger an adjustment to the conversion prices of the Convertible Preferred Shares.
	The Company assesses whether an amendment to the terms of its convertible preferred shares is an extinguishment or a modification using the fair value model. When convertible preferred shares are extinguished, the difference between the fair value of the consideration transferred to the convertible preferred shareholders and the carrying amount of the convertible preferred shares (net of issuance costs) is treated as deemed dividends to the preferred shareholders. The Company considers that a significant change in fair value after the change of the terms to be substantive and thus triggers extinguishment. A change in fair value which is not significant immediately after the change of the terms is considered non-substantive and thus is subject to modification accounting.
	Repurchases and Redesignations of Series A Preferred Shares
	In March 2011, the Company repurchased 2,864,673 Series A Preferred Shares from Gobi at US$1.7454 (RMB11.45) per share for an aggregate price of US$5,000,000 (RMB32,809,002) (“Repurchase”). The Company accounted for the Repurchase as an extinguishment of the Series A Preferred Shares repurchased and recorded an increase of accumulated deficit based on the difference between the US$5,000,000 (RMB32,809,002) paid and the carrying amount of such Series A Preferred Shares of RMB1,879,741.
	In August 2013, the Company negotiated with Esta for the issuance of 18,142,893 Series D preferred shares for a total consideration of US$50,000,000 (RMB308,328,500), of which the fair value per share was US$2.7559 (RMB16.99). The Company also noted it needed to complete certain legal administrative procedures related to the cancellation of the Series A Preferred Shares from the Repurchase in 2011. Consequently, the Company decided to fulfill the requirement in conjunction with the issuance of Series D through the following transactions entered at the same time and in contemplation of each other: (1) the Company issued 15,278,220 Series D Preferred Shares directly to Esta for US$45,000,000 (RMB277,605,000); (2) the Company reissued 2,864,673 Series A Preferred Shares repurchased from Gobi and redesignated such shares into Series D Preferred Shares on a one-for-one basis for US$5,000,000 (RMB30,723,500); (3) Gobi then sold these Series D Preferred Shares to Esta for US$5,000,000 (RMB30,723,500); and ; (4) Gobi paid the US$5,000,000 (RMB30,723,500) received from Esta to the Company. The value of the redesignation described in transaction 2 was compensated by Esta through the premium from issuance described in transaction 1.
	Even though the Company and Gobi exchanged Series A Preferred Shares and cash, such exchange was based on terms identical to those from the 2011 Repurchase, and by design, neither the Company nor Gobi gave away or received any additional value in these transactions. In substance, the transactions were entered to issue a total of 18,142,893 Series D preferred shares to Esta for US$50,000,000 (RMB308,328,500), and the Company received the full fair value of all Series D Preferred Shares issued to Esta. Consequently, the Company had accounted for the transactions as such.
	Also in August 2013, the Company redesignated 3,628,579 Series A Preferred Shares held by Gobi into Series D Preferred Shares, and Gobi then transferred 1,297,765 Series D Preferred Shares, 31,666 Series D Preferred Shares and 2,299,148 Series D Preferred Shares to DCM V, L.P., DCM Affiliates Fund V, L.P. and DCM Hybrid RMB Fund, L.P., respectively, at the purchase price of US$2.7559 (RMB16.99) per share for a total consideration of US$10,000,000 (RMB61,666,000) in cash. The Company did not receive any proceeds for the transfer between Gobi and DCM, nor did the Company receive any consideration for the redesignation for the shares transferred between Gobi and DCM. Such redesignation, in substance, is the same as a repurchase of Series A Preferred Shares from Gobi and a separate issuance of Series D Preferred Shares to DCM and DCM Hybrid RMB Fund, L.P.. The Company accounted for such redesignation as an extinguishment of 3,628,579 Series A Preferred Shares repurchased and recorded an increase in accumulated deficit based on the difference between the fair value of the consideration transferred to Gobi (i.e., fair value of Series D Preferred Shares) and the carrying amount of such Series A Preferred Shares.
	The difference between the Series A Preferred Shares and the Series D Preferred Shares amount is recorded as deemed dividends and an increase to accumulated deficit in the year ended December 31, 2013, as this redesignation is accounted for as an extinguishment of Series A Preferred Shares.
	Terms of the Convertible Preferred Shares
	Key terms of the Convertible Preferred Shares are summarized as follows:
	a. Dividends
	The holders of the Series B, Series C and Series D Preferred Shares are entitled to receive dividends at the rate of 8% of the original Preferred Share issue price per annum, when and if declared by the Board of Directors of the Company, prior and in preference to the Series A Preferred Shares holders, ordinary shareholders or any other class of shareholders on an as-converted basis. The dividend of the Convertible Preferred Shares shall be non-cumulative.
	The holders of the Convertible Preferred Shares are also entitled to receive any other dividend, when and if declared by the Board on an as-converted basis.
	b. Liquidation preference
	Upon the occurrence of any liquidation or deemed liquidation, the holders of the Series A, Series B, Series C, and Series D Preferred Shares shall be entitled to receive, before any distribution or payment to the holders of the ordinary shares of the Company, an amount equal to 150% of their original issue price for Series A Preferred Shares, 100% of their original issue price for Series B Preferred Shares, 100% of their original issue price for Series C Preferred Shares and 100% of their original issue price for Series D Preferred Shares, respectively, as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions, plus all declared and unpaid dividends.
	If the assets and funds distributed among the holders are insufficient to permit the payment of the full preferential amounts, then the holders of Series D Preferred Shares shall be entitled to be paid first out of the assets of the Company available for distribution among the Shareholders, prior and in preference to any payment on all other series of preferred shares and ordinary shares, followed in sequence by Series C Preferred Shares, Series B Preferred Shares, and Series A Preferred Shares.
	After payment of the full preferential amounts, the remaining assets of the Company available for distribution shall be distributed ratably among the holders of Series A, Series B, Series C and Series D Preferred Shares and ordinary shares in proportion to the number of outstanding shares held by each such holder on an as converted basis.
	The liquidation preference described above ceased to exist upon the completion of the Company’s IPO on May 9, 2014.
	c. Redemption
	All Convertible Preferred Shares are redeemable only upon a liquidation event or deemed liquidation events (e.g., change in control), as defined in the Memorandum and Articles of Association.
	d. Conversion
	The Convertible Preferred Shares are convertible, at the option of the holders, into the Company’s ordinary shares at an initial conversion ratio of 1:1 at any time after the original issuance date. In the event that the Company issues additional ordinary shares at a price lower than the then-applicable conversion price for the Preferred Shares, the conversion price of the Convertible Preferred Shares shall be adjusted. The conversion prices are also subject to adjustments upon certain dilution events. In addition, the Convertible Preferred Shares are automatically convertible into such number of ordinary shares of the Company as shall be determined by reference to the then effective and applicable conversion ratio upon the earlier of (i) the closing of a Qualified Initial Public Offering as defined in the Memorandum and Articles of Association, or (ii) the date specified by written consent or agreement of holders of a majority of the outstanding Series A, a majority of the outstanding Series B, 80% of the outstanding Series C and a majority of the outstanding Series D Preferred Shares, each voting as a separate class.
	On April 28, 2014, the Company’s board and shareholders resolved that the Qualified Initial Public Offering (“QIPO”) requirements as stated in the Company’s Memorandum and Articles of Association were waived; and in the event that the public offering price per ADS is below US$10.00, immediately prior to completion of the Company’s initial public offering, all of the Company’s outstanding Series D preferred shares will be automatically converted into and designated as Class B ordinary shares as calculated as follows: US$60,000,000 (RMB363,222,000) divided by 80% of the initial public offering price per ADS, and then multiplied by the ADS-to-Class-A-ordinary-share ratio (each ADS represents three Class A ordinary shares). This was a modification to the existing conversion rights of Series D preferred shares, where the initial conversion ratio from preferred shares to ordinary shares was 1:1 upon the closing of a QIPO.
	Upon the completion of the Group’s IPO on May 9, 2014, Series A, B and C Preferred Shares were converted into Class B ordinary shares on a one-to-one basis, while 21,771,472 shares of Series D Preferred Shares were converted into 25,000,000 shares of Class B ordinary shares. Concurrently, RMB15,605,908 (US$2,506,168) was recorded as deemed dividends to the Series D preferred shareholders.
	e. Voting rights
	The Convertible Preferred Shares have voting rights equivalent to the number of ordinary shares into which they are convertible to. The holders of the Convertible Preferred Shares also have certain veto rights including, but not limited to, any increase or decrease in the total number of directors and change of board composition, appointment or removal of senior management, approval of business plan and operating budget, dividend declaration, any merger, split, reorganization or consolidation.

Ordinary_Shares

Ordinary Shares	12 Months Ended
	Dec. 31, 2014
Ordinary Shares.
Ordinary Shares
	9. Ordinary Shares
	On February 13, 2014, the Board has approved that all of the Company’s existing ordinary shares would be redesignated as Class B ordinary shares and all of the Company’s outstanding preferred shares would be redesignated or automatically converted into Class B ordinary shares immediately prior to the completion of the Company’s initial public offering (“IPO”). All options, regardless of grant dates, will entitle holders to the equivalent number of Class A ordinary shares once the vesting and exercising conditions on such share-based compensation awards are met. Holders of Class A ordinary shares will be entitled to one vote per share, while holders of Class B ordinary shares will be entitled to ten votes per share on all matters subject to shareholders’ vote. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder. Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances. Upon any transfer of Class B ordinary shares by a holder to any person or entity which is not an affiliate of such holder, such Class B ordinary shares will be automatically and immediately converted into the equivalent number of Class A ordinary shares.
	On May 9, 2014, concurrently with the completion of the Company’s IPO, the Company issued 5,000,000, 1,666,666 and 5,000,000 shares of Class A ordinary shares at a price per share equal to the IPO price to DCM Hybrid RMB Fund, L.P., the Company’s existing shareholder, Qihoo 360 Technology Co. Ltd. and Ctrip Investment Holding Ltd., respectively.
	On December 15, 2014, the Company entered into a share subscription agreement with Unicorn Riches Limited, JD.com E-commerce (Investment) Hong Kong Corporation Limited, Ctrip Investment Holding Ltd. and the respective personal holding companies of the Group’s chief executive officer and chief operating officer, pursuant to which the Company issued 36,812,868 numbers of Class A ordinary shares for a total proceeds of RMB905,792,199 (US$148 million), net of issuance cost of RMB14,279,026. The transaction was closed on December 31, 2014.

Sharebased_Compensation_Expens

Share-based Compensation Expenses	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Expenses
Share-based Compensation Expenses
	10. Share-based Compensation Expenses
	The Company’s 2008 Incentive Compensation Plan (the “2008 Plan”) allows the plan administrator to grant options and restricted shares to the Company’s employees, directors, and consultants, up to a maximum of 11,500,000 ordinary shares. In December 2012, the Board of Directors approved an increase in the number of shares available for issuance under the plan to 18,375,140 ordinary shares. In April 2014 the Company adopted the 2014 Share Incentive Plan (the “2014 Plan”). The maximum aggregate number of shares which may be issued pursuant to all awards under the 2014 Plan was initially 5,500,000 ordinary shares as of the date of its approval. The number of shares reserved for future issuances under the 2014 Plan will be increased automatically if and whenever the ordinary shares reserved under the 2014 Plan account for less than 1% of the total then-issued and outstanding ordinary shares on an as-converted basis, as a result of which increase the ordinary shares reserved under the 2014 Plan immediately after each such increase shall equal 5% of the then-issued and outstanding ordinary shares on an as-converted basis.
	The options granted under the 2008 plan have a contractual term of six years, and ones under 2014 plan have a contractual term of ten years. The incentive awards under both 2008 plan and 2014 plan vest over a period of four years of continuous service, one fourth (1/4) of which vest upon the first anniversary of the stated vesting commencement date and the remaining vest ratably over the following 36 months. Under the 2008 plan, incentive awards are only exercisable upon occurrence of certain defined exercisable events. The Group did not recognize any share-based compensation expense for the awards granted until the completion of the Company’s IPO on May 9, 2014 upon which the performance condition was satisfied. Share-based compensation expense of RMB39,172,678 was recognized for the year ended December 31, 2014.
	Share options
	The following table summarizes the Company’s option activities:
		Number of		Weighted	Weighted	Aggregate Intrinsic	Weighted
		Options		Average	Average	Value	Average
				Exercise	Remaining		Grant Date
				Price	Contractual Life		Fair Value
				US$	In Years	US$
	Outstanding at January 1, 2014	17,631,953		0.37	3.67	28,284,725	0.49
	Granted	6,477,000		3.08	—	—	3.57
	Exercised	(2,332,851	)	0.24	—	—	0.13
	Forfeited	(510,256	)	2.16	—	—	1.49
	Outstanding at December 31, 2014	21,265,846		1.17	4.88	60,164,810	1.44
	Vested and expected to vest at December 31, 2014	20,614,680		1.15	4.82	58,822,488	1.41
	Exercisable at December 31, 2014	10,127,642		0.31	2.67	37,387,103	0.38
	The aggregate intrinsic value is calculated as the difference between the exercise price of the options and the estimated fair value of the underlying shares at each reporting date.
	The total intrinsic value of options exercised for the year ended December 31, 2014 was RMB68,093,688 (US$10,974,710). No options were exercised in the years ended December 31, 2012 and 2013.
	The total fair value of share options vested during the year ended December 31, 2012, 2013, and 2014 was RMB5,507,749, RMB8,340,955, and RMB23,849,260 (US$3,843,803), respectively.
	The grant date fair value of each option is calculated using a binomial option pricing model with the following assumptions:
		2012		2013	2014
	Expected volatility	55%		50-52%	50-51.1%
	Risk-free interest rate	1.52%		1.08-1.75%	1.99-2.6%
	Exercise multiple	2.2-2.8		2.2-2.8	2.2-2.8
	Expected dividend yield	0%		0%	0%
	Expected term (in years)	6		6	10-Jun
	Expected forfeiture rate (post-vesting)	0-20%		0-20%	0-20%
	Fair value of the common share on the date of option grant	US$0.76		US$0.91-1.98	US$3.33-6.98
		RMB4.78		RMB5.63-12.26	RMB20.66-43.31
	The Company estimated the expected volatility at the date of grant date and each option valuation date based on the annualized standard deviation of the daily return embedded in historical share prices of comparable companies. Risk free interest rate was estimated based on the yield to maturity of US treasury bonds denominated in US$ at the option valuation date. The exercise multiple is estimated as the ratio of fair value of underlying shares over the exercise price as at the time the option is exercised, based on a consideration of research study regarding exercise pattern based on empirical studies on the actual exercise behavior of employees. The Company has never declared or paid any cash dividends on its capital stock, and the Company does not anticipate any dividend payments on its ordinary shares in the foreseeable future. Expected term is the contract life of the option, and estimated forfeiture rates are determined based on historical employee turnover rate.
	On May 15, 2014, the Company modified the exercise price of 576,000 share options granted on April 1, 2014 from US$5.00 to US$3.00. The incremental compensation expense of RMB1,698,213 (US$275,505) was equal to the excess of the fair value of the modified award immediately after the modification over the fair value of the original award immediately before the modification. The incremental compensation expense will be recognized over the remaining service period.
	On October 8, 2014, the Company extended the contract life of 2,159,812 share options granted under 2008 plan from six years to ten years. The incremental compensation expense was immaterial and was recognized immediately since the options were fully vested.
	As of December 31, 2014, there was RMB144,918,404(US$23,356,607) in total unrecognized compensation expense related to unvested options, which is expected to be recognized over a weighted-average period of 3.52 years.
	Restricted shares
	The fair value of restricted shares with service conditions or performance conditions is based on the fair market value of the underlying ordinary shares on the date of grant.
	The following table summarizes the Company’s restricted shares activity under the option plans:
		Numbers of		Weighted
		restricted		average grant
		shares		date fair value
	Outstanding as of December 31, 2013	—		—
	Grant	210,000		3.36
	Vested	(30,618	)	3.36
	Forfeited	—		—
	Outstanding as of December 31, 2014	179,382		3.36
	Vested and expected to vest at December 31, 2014	179,382		3.36
	As of December 31, 2014, there was RMB3,666,690 (US$590,963) in total unrecognized compensation expense related to restricted shares, which is expected to be recognized over a weighted-average period of 3.35 years.

Loss_Per_Share

Loss Per Share	12 Months Ended
	Dec. 31, 2014
Loss Per Share
Loss Per Share
	11. Loss Per Share
	The following table sets forth the computation of basic and diluted loss per share for the periods indicated:
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Numerator:
	Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Deemed dividends upon redesignation of Series A Preferred Shares	—		(59,428,400	)	—		—
	Deemed dividends upon modification of Series D Preferred Shares	—		—		(15,605,908	)	(2,515,216	)
	Numerator for basic and diluted net loss per share	(107,189,923	)	(139,060,479	)	(463,463,759	)	(74,696,797	)
	Denominator:
	Weighted average number of ordinary shares outstanding-basic and diluted	26,000,000		26,000,000		105,746,313		105,746,313
	Loss per share-basic and diluted	(4.12	)	(5.35	)	(4.38	)	(0.71	)
	For the years ended December 31, 2012, 2013 and 2014, the Company had securities which could potentially dilute basic loss per share in the future, which were excluded from the computation of diluted loss per share as their effects would have been anti-dilutive. Such outstanding securities consist of the following:
		2012		2013		2014
	Series A Preferred Shares	13,506,748		13,506,748		—
	Series B Preferred Shares	21,564,115		21,564,115		—
	Series C Preferred Shares	25,782,056		25,782,056		—
	Series D Preferred Shares	21,771,472		21,771,472		—
	Options and restricted shares	10,587,771		17,631,953		21,445,228
	Total	93,212,162		100,256,344		21,445,228

Restricted_Net_Assets

Restricted Net Assets	12 Months Ended
	Dec. 31, 2014
Restricted Net Assets
Restricted Net Assets
	12. Restricted Net Assets
	Pursuant to laws applicable to entities incorporated in the PRC, the Group’s subsidiaries and Affiliated Entities in the PRC must make appropriations from after-tax profit to non-distributable reserve funds. These reserve funds include one or more of the following: (i) a general reserve, (ii) an enterprise expansion fund and (iii) a staff bonus and welfare fund. Subject to certain cumulative limits, the general reserve fund requires an annual appropriation of 10% of after tax profit (as determined under accounting principles generally accepted in the PRC at each year-end) until the accumulative amount of such reserve fund reaches 50% of a company’s registered capital; the other fund appropriations are at the subsidiaries’ discretion. These reserve funds can only be used for specific purposes of enterprise expansion and staff bonus and welfare and are not distributable as cash dividends. In addition, due to restrictions on the distribution of share capital from the Group’s PRC subsidiaries and Affiliated Entities and also as a result of these entities’ unreserved accumulated losses, total restrictions placed on the distribution of the Group’s PRC subsidiaries and Affiliated Entities’ net assets was RMB721 million, or 51% of the Group’s total consolidated net assets as of December 31, 2014.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies.
Commitments and Contingencies
	13. Commitments and Contingencies
	(a) Operating Lease Commitments
	The Group leases its facilities and offices under non-cancelable operating lease agreements. Certain of these arrangements contain free or escalating rent clauses. The Group recognizes rental expense under such arrangements on a straight-line basis over the lease term. Rental expenses amounting to RMB13,815,974, RMB12,582,318 and RMB15,969,051 during the years ended December 31, 2012, 2013 and 2014, respectively, were charged to the statement of comprehensive loss when incurred.
	As of December 31, 2014, future minimum commitments under non-cancelable agreements were as follows:
	Years Ending December 31,	RMB	US$
	2015	22,501,858	3,626,641
	2016	21,450,605	3,457,210
	2017	18,894,220	3,045,196
	2018	13,235,800	2,133,224
	2019	13,162,292	2,121,376
	Thereafter	19,611,943	3,160,871
	Total	108,856,718	17,544,518
	(b) Capital Commitments
	As of December 31, 2014, capital commitments relating to leasehold improvement and purchase of equipment were approximately RMB1,438,502.
	(c) Contingencies
	From time to time, the Group is involved in claims and legal proceedings that arise in the ordinary course of business. Based on currently available information, management does not believe that the ultimate outcome of these unresolved matters, individually and in the aggregate, is likely to have a material adverse effect on the Group’s financial position, results of operations or cash flows. However, litigation is subject to inherent uncertainties and the Group’s view of these matters may change in the future. If an unfavorable outcome were to occur, there exists the possibility of a material adverse impact on the Group’s financial position and results of operations for the periods in which the unfavorable outcome occurs.

Related_Party_Transactions_and

Related Party Transactions and Balances	12 Months Ended
	Dec. 31, 2014
Related Party Transactions and Balances
Related Party Transactions and Balances
	14. Related Party Transactions and Balances
	Ctrip Investment Holding Ltd.(“Ctrip” ) has one director in common with the Company. Ctrip has purchased 3,731,034 of Class A ordinary shares for a total proceeds of US$15 million through the private placement transaction in December 2014. Ctrip also acted as service provider to the Group, and the associated commission fee was immaterial.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events.
Subsequent Events
	15. Subsequent Events
	In March 2015, the Group entered into agreements to acquire the majority of shares of two travel agencies, each of which has a license to sell and operate Taiwan tours in mainland China. The acquisitions closed on April 1, 2015. Total cash considerations are approximately RMB56 million subject to closing conditions and adjustments which are expected to complete in the second quarter of 2015.

CONDENSED_FINANCIAL_INFORMATIO

CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY	12 Months Ended
	Dec. 31, 2014
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
	ADDITIONAL FINANCIAL INFORMATION - FINANCIAL STATEMENT SCHEDULE
	TUNIU CORPORATION
	CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
	CONDENSED BALANCE SHEETS
	(RMB, except share data and per share data, or otherwise noted)
		December 31,
		2013		2014
						US$ (Note 2(c))
	ASSETS
	Current assets
	Cash and cash equivalents	301,976,515		1,323,279,666		213,273,969
	Amounts due from subsidiaries	17,860,046		17,999,974		2,901,069
	Prepayments and other current assets	1,247,811		1,561,058		251,597
	Total current assets	321,084,372		1,342,840,698		216,426,635
	Other non-current assets	2,127,187		—		—
	Total assets	323,211,559		1,342,840,698		216,426,635
	LIABILITIES, MEZZANINE EQUITY AND SHAREHOLDERS’ EQUITY/(DEFICIT)
	Current liabilities
	Accrued expenses and other current liabilities	4,722,120		16,722,535		2,695,184
	Total current liabilities	4,722,120		16,722,535		2,695,184
	Non-current liabilities
	Investments (deficit) in subsidiaries and VIE	27,133,711		(82,605,055	)	(13,313,518	)
	Total non-current liabilities	27,133,711		(82,605,055	)	(13,313,518	)
	Total liabilities	31,855,831		(65,882,520	)	(10,618,334	)
	Mezzanine equity
	Series A Convertible Preferred Shares (US$0.0001 par value; 20,000,000 and nil shares authorized as of December 31, 2013 and December 31, 2014, respectively, 13,506,748 and nil shares issued and outstanding as of December 31, 2013 and December 31, 2014 respectively)	9,360,443		—		—
	Series B Convertible Preferred Shares (US$0.0001 par value; 21,564,115 and nil shares authorized, issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	48,890,116		—		—
	Series C Convertible Preferred Shares (US$0.0001 par value; 25,782,056 and nil shares authorized,  issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	290,255,691		—		—
	Series D Convertible Preferred Shares (US$0.0001 par value; 21,771,472 and nil shares authorized,  issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	367,934,993		—		—
	Total mezzanine equity	716,441,243		—		—
	Shareholders’ equity/(deficit)
	Ordinary shares (US$0.0001 par value; 126,999,531 authorized and 26,000,000 shares issued and outstanding as of December 31, 2013; 1,000,000,000 shares (including 780,000,000 Class A shares, 120,000,000 Class B shares and 100,000,000 shares to be designated by the Board of Directors) authorized and 188,435,922 shares (including 82,487,876 Class A shares and 105,948,046 Class B shares) issued and outstanding as of December 31, 2014)	17,757		121,068		19,513
	Additional paid-in capital	200,000		2,298,726,639		370,487,483
	Accumulated other comprehensive loss	(19,723,270	)	(21,080,728	)	(3,397,597	)
	Accumulated deficit	(405,580,002	)	(869,043,761	)	(140,064,430	)
	Total shareholders’ equity/(deficit)	(425,085,515	)	1,408,723,218		227,044,969
	Total liabilities, mezzanine equity and shareholders’ equity/(deficit)	323,211,559		1,342,840,698		216,426,635
	ADDITIONAL FINANCIAL INFORMATION - FINANCIAL STATEMENT SCHEDULE
	TUNIU CORPORATION
	CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
	CONDENSED STATEMENTS OF COMPREHENSIVE LOSS
	(RMB, except share data and per share data, or otherwise noted)
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Revenues	—		—		—		—
	Cost of revenues	—		—		—		—
	Gross profit	—		—		—		—
	Operating expenses
	Research and product development	—		—		—		—
	Sales and marketing	—		—		—		—
	General and administrative	(2,090,100	)	(4,026,494	)	(5,617,466	)	(905,371	)
	Share of loss of subsidiaries and affiliated entities	(108,975,736	)	(77,414,051	)	(446,158,957	)	(71,907,771	)
	Other operating income	—		—		415,259		66,928
	Total operating expenses	(111,065,836	)	(81,440,545	)	(451,361,164	)	(72,746,214	)
	Loss from operations	(111,065,836	)	(81,440,545	)	(451,361,164	)	(72,746,214	)
	Other income/(expenses)
	Interest income	4,356,806		1,737,572		6,618,634		1,066,730
	Foreign exchange related gains/(losses),net	(480,893	)	70,894		(3,115,321	)	(502,097	)
	Loss before income tax expense	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Income tax expense	—		—		—		—
	Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Deemed dividends to preferred shareholders	—		(59,428,400	)	(15,605,908	)	(2,515,216	)
Net loss attributable to ordinary shareholders	(107,189,923	)	(139,060,479	)	(463,463,759	)	(74,696,797	)
Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
Other comprehensive loss
Foreign currency translation adjustment, net of nil tax	(237,281	)	(5,331,216	)	(1,357,458	)	(218,783	)
Comprehensive loss	(107,427,204	)	(84,963,295	)	(449,215,309	)	(72,400,364	)
ADDITIONAL FINANCIAL INFORMATION - FINANCIAL STATEMENT SCHEDULE
TUNIU CORPORATION
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
CONDENSED STATEMENTS OF CASH FLOWS
(RMB, except share data and per share data, or otherwise noted)
	For the Years Ended December 31,
	2012		2013		2014
							US$ (Note 2(c))
Cash provided by (used in) operating activities	(489,138	)	(3,057,858	)	2,636,388		424,908
Cash used in investing activities	(148,778,745	)	(93,595,112	)	(518,689,918	)	(83,597,640	)
Cash provided by financing activities	—		306,360,473		1,540,396,658		248,266,876
Effect of exchange rate changes on cash and cash equivalents	(717,845	)	(5,250,519	)	(3,039,977	)	(489,955	)
Net increase /(decrease) in cash and cash equivalents	(149,985,728	)	204,456,984		1,021,303,151		164,604,189
Cash and cash equivalents at the beginning of year	247,505,259		97,519,531		301,976,515		48,669,780
Cash and cash equivalents at the end of year	97,519,531		301,976,515		1,323,279,666		213,273,969
Supplemental disclosure of non-cash investing and financing activities
Deemed dividends to preferred shareholders	—		59,428,400		15,605,908		2,515,216
Accrued issuance cost related to private placement	—		—		14,076,285		2,268,685
Accrual related to deferred initial public offering costs	—		2,127,187		—		—
Receivables related to exercise of stock option	—		—		(1,019,748	)	(164,354	)
ADDITIONAL FINANCIAL INFORMATION - FINANCIAL STATEMENT SCHEDULE
TUNIU CORPORATION
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
Note to Financial Statement Schedule
Schedule I has been provided pursuant to the requirements of Rule 12-04(a) and 5-04-(c) of Regulation S-X, which require condensed financial information as to the financial position, change in financial position and results of operations of a parent company as of the same dates and for the same periods for which audited consolidated financial statements have been presented when the restricted net assets of consolidated subsidiaries exceed 25 percent of consolidated net assets as of the end of the most recently completed fiscal year.
The condensed financial information has been prepared using the same accounting policies as set out in the accompanying consolidated financial statements except that the equity method has been used to account for investments in its subsidiaries and VIE. Such investments in subsidiaries are presented on the balance sheets as investment (deficit)in subsidiaries and VIE and the loss of the subsidiaries is presented as share of loss of subsidiaries and VIE.
Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. The footnote disclosures contain supplemental information relating to the operations of the Company and, as such, these statements should be read in conjunction with the notes to the accompanying consolidated financial statements.
As of December 31, 2014, the Company had no significant capital and other commitments, long-term obligations, or guarantee, except for those which have separately disclosed in the consolidated financial statements.

Principal_Accounting_Policies_

Principal Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Principal Accounting Policies
Principles of Consolidation
	(a) Principles of Consolidation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The consolidated financial statements include the financial statements of the Company, its subsidiaries, the Affiliated Entities for which the Company is the primary beneficiary. Subsidiaries are those entities in which the Company, directly or indirectly, controls more than one half of the voting power, has the power to appoint or remove the majority of the members of the board of directors, or to cast a majority of votes at the meeting of board of directors, or has the power to govern the financial and operating policies of the investee under a statute or agreement among the shareholders or equity holders.
	A VIE is an entity in which the Company, or its subsidiary, through contractual arrangements, bears the risks of, and enjoys the rewards normally associated with, ownership of the entity, and therefore the Company or its subsidiary is the primary beneficiary of the entity. All significant transactions and balances among the Company, its equity-owned subsidiaries, and the VIE and subsidiaries thereof have been eliminated in consolidation.
Use of Estimates
	(b) Use of Estimates
	The preparation of the Company’s consolidated financial statements in conformity with the U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities. Actual results could differ materially from those estimates. Significant accounting estimates reflected in the Company’s consolidated financial statements mainly include revenue recognition, estimating useful lives and impairment for property and equipment, losses due to committed tour reservations, the valuation allowance for deferred tax assets, the determination of uncertain tax positions.
Functional Currency and Foreign Currency Translation
	(c) Functional Currency and Foreign Currency Translation
	The Group uses Renminbi (“RMB”) as its reporting currency. The functional currency of the Company and its subsidiaries incorporated outside of PRC is the United States dollar (“US$”), while the functional currency of the PRC entities in the Group is RMB as determined based on ASC 830, Foreign Currency Matters.
	Transactions denominated in other than the functional currencies are re-measured into the functional currency of the entity at the exchange rates prevailing on the transaction dates. Foreign currency denominated financial assets and liabilities are re-measured at the balance sheet date exchange rate. The resulting exchange differences are included in the consolidated statements of comprehensive loss as foreign exchange related gains / loss.
	Assets and liabilities of the Company and its subsidiaries incorporated outside of PRC are translated into RMB at fiscal year-end exchange rates. Income and expense items are translated at average exchange rates prevailing during the respective fiscal years. Translation adjustments arising from these are reported as foreign currency translation adjustments and are shown as a component of accumulated other comprehensive income or loss in the consolidated statement of changes in shareholders’ equity/(deficit).
	The unaudited United States dollar amounts disclosed in the accompanying financial statements are presented solely for the convenience of the readers. Translations of amounts from RMB into US$ for the convenience of the reader were calculated at the rate of US$1.00 =MB6.2046 on December 31, 2014, as set forth in H.10 statistical release of the Federal Reserve Board. No representation is made that the RMB amounts could have been, or could be, converted into US$ at that rate on December 31, 2014, or at any other rate.
Fair Value Measurement
	(d) Fair Value Measurement
	Accounting guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and it considers assumptions that market participants would use when pricing the asset or liability.
	Accounting guidance establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. A three-tier value hierarchy prioritizes the inputs used in measuring fair value as follows:
	Level 1—Observable inputs that reflect quoted prices for identical assets or liabilities in active markets
	Level 2—Inputs other than the quoted prices in active markets observable either directly or indirectly
	Level 3—Unobservable inputs which are supported by little or no market data
	The Group’s financial instruments include cash and cash equivalents, short-term investments, accounts receivable, accounts payable, advances from customers, and certain accrued liabilities and other current liabilities. The carrying values of these financial instruments approximated their fair values due to the short-term maturity of these instruments.
Cash and Cash Equivalents
	(e) Cash and Cash Equivalents
	Cash and cash equivalents represent cash on hand and demand deposits placed with banks or other financial institutions, which are unrestricted as to withdrawal or use.  The following table sets forth a breakdown of cash and cash equivalents by currency denomination and jurisdiction as of December 31, 2013 and 2014:
		RMB			RMB Equivalent (US$)			RMB Equivalent (HK$)			Total in RMB
		Overseas	China		Overseas	China		Overseas	China
			Non VIE	VIE		Non VIE	VIE		Non VIE	VIE
	December 31, 2013	294,051,240	14,280,676	80,573,735	29,047,618	953,126	367,763	128,677	—	—	419,402,835
	December 31, 2014	1,810,709	6,410,240	102,338,960	1,323,654,351	23,309,701	16,932	181,483	—	—	1,457,722,376
Restricted Cash
	(f) Restricted Cash
	Restricted cash represents cash that cannot be withdrawn without the permission of third parties. The Group’s restricted cash arises from cash deposits required by tourism administration departments as a pledge to secure travelers’ rights and interests, and those required by the Group’s business partners for business operations.
Short-term Investments
	(g) Short-term Investments
	Short-term investments are comprised of investments in financial products issued by banks or other financial institutions, which contain a fixed or variable interest rate. Such investments are generally not permitted to be redeemed early or are subject to penalties for redemption prior to maturity. The Group classifies these investments as held-to-maturity as it has both the positive intent and ability to hold them until maturity. Held-to-maturity securities are reported at amortized cost, and are subject to impairment tests. Given the short-term nature, the carrying value of short-term investments approximates their fair value. There was no other-than-temporary impairment of short-term investments in the years ended December 31, 2012, 2013 and 2014.
Accounts Receivable
	(h) Accounts Receivable
	The Group’s accounts receivable mainly consist of amounts due from the corporate customers, insurance companies and travel boards or bureaus, which are carried at the original invoice amount less an allowance for doubtful accounts. The Group reviews the accounts receivable on a periodic basis and makes allowances when there is doubt as to the collectability of individual balances. The Group evaluates the collectability of accounts receivable considering many factors including reviewing accounts receivable balances, historical bad debt rates, payment patterns, counterparties’ credit worthiness and financial conditions, and industry trend analysis. No allowance for doubtful accounts was provided as of December 31, 2013 and 2014 as the Group believes that it is probable the accounts receivable will be fully collected.
Advances from Customers
	(i) Advances from Customers
	Customers pay in advance to purchase travel services. Cash proceeds received from customers are initially recorded as advances from customers and are recognized as revenues when revenue recognition criteria are met.
Property and Equipment
	(j) Property and Equipment
	Property and equipment are stated at cost less accumulated depreciation and impairment if applicable. Property and equipment are depreciated over the estimated useful lives on a straight-line basis. The estimated useful lives are as follows:
	Category	Estimated useful life
	Computers and equipment	3 years
	Furniture and fixtures	3 - 5 years
	Software	5 years
	Leasehold improvements	Over the shorter of the lease term or the estimated useful life of the asset 1 – 9 years
	Gain or loss on the disposal of property and equipment is the difference between the net sales proceeds and the carrying amount of the relevant assets and is recognized in the consolidated statements of comprehensive loss.
Capitalized Software Development Cost
	(k) Capitalized Software Development Cost
	The Company has capitalized certain costs related to internally developed software used for supplier management and customer purchase interface in accordance with ASC 350-40, Internal-use software, which requires the capitalization of costs relating to certain activities of developing internal-use software that occur during the application development stage. Capitalized internal-use software costs are stated at cost less accumulated amortization and the amount is included in “property and equipment, net” on the consolidated balance sheets, with an estimated useful life of five years. Software development cost capitalized amounted to nil, RMB980,187 and RMB6,836,756 for the years ended December 31, 2012, 2013 and 2014, respectively. Costs capitalized mainly include payroll and payroll-related costs for employees who are directly associated with and who devoted time to the internal-use software projects during the application development stage. The amortization expense for capitalized software costs amounted to nil, RMB73,833 and RMB727,073 for the year ended December 31, 2012, 2013 and 2014, respectively. The unamortized amount of capitalized internal use software development costs was RMB7,016,037 as of December 31, 2014.
Intangible Assets
	(l) Intangible Assets
	Intangible assets with definite lives are recorded at carrying value, which represents original cost less accumulated amortization and impairment if applicable, and are recorded in “other non-current assets”. The intangible assets are amortized on a straight-line basis over their estimated useful lives.
Impairment of long-lived assets
	(m) Impairment of long-lived assets
	The Group evaluates its long-lived assets and finite lived intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When these events occur, the Group measures impairment by comparing the carrying amount of the assets to future undiscounted net cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flows is less than the carrying amount of the assets, the Group recognizes an impairment loss equal to the difference between the carrying amount and fair value of these assets. No impairment of long-lived assets was recognized during the year ended December 31, 2012, 2013 and 2014.
Revenue Recognition
	(n) Revenue Recognition
	The Group’s revenue is primarily derived from sales of organized tours and self-guided tours, and other service fees. Revenue is recognized when the following criteria are met: persuasive evidence of an arrangement exists, the sales price is fixed or determinable, service has been provided, and collectability is reasonably assured in accordance with ASC 605, Revenue Recognition.
	Organized tours: Substantially all of revenue from organized tours is recognized on a gross basis, as the Group is the primary obligor in the arrangement and bears the risks and rewards, including the customer’s acceptance of services delivered. Such commitments are made in the contract the Group enters with its customers. Even though the Group does not generally assume inventory risk of purchasing travel services before customers place an order, the Group is the party retained by and paid by its customers, and the Group is responsible for (and solely authorized to) refunding customers their payments in situations of customer disputes. Further, the Group independently selects travel service suppliers, and determines the prices charged to customers and paid to its travel suppliers. Revenue from organized tours is recognized when the tours end as service rendering is only considered completed upon conclusion of the entire organized tour.
	Self-guided tours: Revenue from self-guided tours is recognized on a net basis, representing the difference between what the Group receives from its customers and the amounts due to its travel suppliers. In the self-guided tour arrangements, the Group generally does not assume inventory risk, has limited involvement in determining the service, and provides limited additional services to customers. Suppliers are responsible for all aspects of providing the air transportation and hotel accommodation. As such, the Group concludes that it is an agent for the travel service providers in these transactions and revenues are reported on a net basis. Revenue from self-guided tours is recognized when the tours end as commissions are not earned until this time according to the contractual arrangements the Group entered into with its travel suppliers.
	Other revenues: Other revenues is primarily derived from the service fee received from insurance companies, visa processing services and the advertising services to domestic and foreign tourism boards and bureaus on its online platform.  Revenue is recognized when the services are rendered.
	The Company does not recognize revenue if customer refunds are warranted due to customer satisfaction issues or other reasons, which is generally known at the end of each tour when revenues are recognized. In the event of tour cancellation by customers, the liability associated with prepayments received from customers remains on the Group’s consolidated balance sheets until refunds are issued.
	Customer incentives
	From time to time customers are offered coupons, travel vouchers, membership points, or cash rewards as customer incentives. The Group accounts for these customer incentives in accordance with ASC 605-50, Customer Payments and Incentives. For coupons and travel vouchers offered where prior purchase is not required, the Group accounts for them as a reduction of revenue when revenue is recognized. The Group assessed coupons and vouchers offered to customers as part of a current purchase that give customers a right, but do not obligate customers to make future purchases, and concluded the discounts offered are insignificant; as such, no deferral of revenue is considered necessary.
	For membership points earned by customers as part of the customer reward program which provides travel awards upon point redemption, the Group estimates the incremental costs associated with the Group’s future obligation to its customer, and records them as sales and marketing expense in the consolidated statements of comprehensive loss.
	Unredeemed membership points are recorded in other current liabilities in the consolidated balance sheets. Cash rewards earned by customers are recorded as a reduction to revenue, with corresponding unclaimed amount recorded in other current liabilities. The Company adjusts the liability when the membership points and cash rewards remain unclaimed upon program expiration, which is typically two years from the day the membership points and cash rewards are awarded. As of December 31, 2013 and 2014, liabilities recorded related to membership points and cash rewards are, RMB5,760,470 and RMB14,763,617, respectively.
	Business and related taxes
	The Group is subject to business and related taxes on services provided in the PRC at applicable rates, which are recorded as a reduction of revenues.
	In November 2011, the Ministry of Finance released Circular Caishui [2011] No. 111 mandating Shanghai to be the first city to carry out a pilot program of tax reform. Effective January 1, 2012, any entity that carries out selected modern services in Shanghai is required to pay value-added tax (“VAT”) instead of business tax. The pilot program has been expanded to other regions, including Beijing from September 1, 2012 and Nanjing from October 1, 2012. Beijing Tuniu, Nanjing Tuniu and Tuniu (Nanjing) Information Technology Co., Ltd. have been subject to VAT at a rate of 6% and have since stopped paying the 5% business tax from the respective effective dates of the tax reform.
Cost of Revenues
	(o) Cost of Revenues
	Cost of revenues mainly consists of costs to suppliers of organized tours, and salaries and other compensation-related expenses related to the Group’s tour advisors, customer services representatives, and other personnel related to tour transactions.
	Committed tour reservations
	In order to secure availabilities of organized tours and self-guided tours during peak seasons such as holiday periods, the Group may enter into certain contractual commitments with suppliers to reserve tours for selected destinations. The Group is required to pay a deposit to ensure tour availabilities, and such prepayment is record in prepayments and other current assets on the consolidated balance sheets. Some of these contractual commitments are non-cancellable, and to the extent the reserved tours are not sold to customers, the Group would be liable to pay suppliers a pre-defined or negotiated penalty, thereby assuming inventory risks. Management estimates losses of the committed tour reservations on a periodic basis based on contractual terms and historical experience, and record such losses in the period the loss is considered probable. For the years ended December 31, 2012, 2013 and 2014, losses recorded in “cost of revenues” in the consolidated statements of comprehensive loss amounted to RMB1,567,087, RMB6,681,730 and RMB4,134,149, respectively.
Advertising Expenses
	(p) Advertising Expenses
	Advertising expenses, which primarily consist of online marketing expense and brand marketing expenses through various other forms of media, are recorded in sales and marketing expenses as incurred.  Advertising expense were RMB52,112,680, RMB103,142,138 and RMB379,205,377 for the years ended December 31, 2012, 2013 and 2014, respectively.
Research and Product Development Expenses
	(q) Research and Product Development Expenses
	Research and product development expenses include salaries and other compensation-related expenses to the Group’s research and product development personnel, as well as office rental, depreciation and related expenses and travel-related expenses for the Group’s research and product development team. The Group recognizes software development costs in accordance with ASC 350-40 “Software—internal use software”. The Group expenses all costs that are incurred in connection with the planning and implementation phases of development, and costs that are associated with repair or maintenance of the existing websites or software for internal use. Certain costs associated with developing internal-use software are capitalized when such costs are incurred within the application development stage of software development. See 2(k) Capitalized Software Development Cost for additional information.
Leases
	(r) Leases
	A lease for which substantially all the benefits and risks incidental to ownership remain with the lessor is classified as an operating lease. All leases of the Group are currently classified as operating leases. When a lease contains rent holidays or requires fixed escalations of the minimum lease payments, the Group records the total rental expense on a straight-line basis over the lease term and the difference between the straight-line rental expense and cash payment under the lease is recorded as deferred rent liabilities. As of December 31, 2013 and 2014, deferred rent of nil and RMB4,243,520, were recorded as current liabilities and RMB19,870,002 and RMB22,278,479 were recorded as non-current liabilities, respectively.
Share-based Compensation
	(s) Share-based Compensation
	The Company applies ASC 718, Compensation — Stock Compensation to account for its share-based compensation program. In accordance with the guidance, the Company determines whether a share-based award should be classified and accounted for as a liability award or equity award. All grants of share-based awards to employees classified as equity awards are recognized in the financial statements based on their grant date fair values which are calculated using the binominal option pricing model. Share-based compensation expenses are recorded net of an estimated forfeiture rate over the service period using the straight-line method.
	The Company’s 2008 Incentive Compensation Plan allows the plan administrator to grant options and restricted shares to the Company’s employees, directors, and consultants. The plan administrator is the Company’s board of directors or a committee appointed and determined by the board. The board may also authorize one or more officers of the Company to grant awards under the plan. Under the 2008 Incentive Compensation Plan, options granted to employees vest upon satisfaction of a service condition, which is generally satisfied over four years. Additionally, the incentive plan provides an exercisability clause where employees can only exercise vested options upon the occurrence of the following events: (i) after the Company’s ordinary shares has become a listed security, (ii) in connection with or after a triggering event (defined as a sale, transfer, or disposition of all or substantially all of the Company’s assets, or a merger, consolidation, or other business combination transaction), or (iii) if the optionee obtains all necessary governmental approvals and consents required. Options for which the service condition has been satisfied are forfeited should employment terminate three months prior to the occurrence of an exercisable event, which substantially creates a performance condition. This performance condition was met upon completion of the Company’s initial public offering, and the associated share-based compensation expense for awards vested as of that date were recognized on May 9, 2014.
	In April 2014, the Company adopted the 2014 Share Incentive Plan, which contains no such exercisability clause. For detail of the 2014 Share Incentive Plan, please refer to note 10 of the consolidated financial statements.
	The Group recognized share-based compensation expense of RMB39,172,678 in the year ended December 31, 2014, which was classified as follows:
		For the Years Ended December 31,
		2012	2013	2014
					US$ (Note 2(c))
	Cost of revenue	—	—	799,880	128,917
	Research and product development	—	—	1,971,655	317,773
	Sales and marketing	—	—	856,858	138,100
	General and administrative	—	—	35,544,285	5,728,699
	Total	—	—	39,172,678	6,313,489
Income Taxes
	(t) Income Taxes
	Current income taxes are provided on the basis of net income for financial reporting purposes, adjusted for income and expense items which are not assessable or deductible for income tax purposes, in accordance with the regulations of the relevant tax jurisdictions. Deferred income taxes are provided using the liability method. Under this method, deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. The tax base of an asset or liability is the amount attributed to that asset or liability for tax purposes. The effect on deferred taxes of a change in tax rates is recognized in the interim condensed consolidated statements of comprehensive loss in the period of change. A valuation allowance is provided to reduce the amount of deferred tax assets if it is considered more likely than not that some portion of, or all of the deferred tax assets will not be realized.
	Uncertain tax positions
	The guidance prescribes a more likely than not threshold for financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Guidance also provides for the derecognition of income tax assets and liabilities, classification of current and deferred income tax assets and liabilities, accounting for interest and penalties associated with tax positions, accounting for income taxes in interim periods, and income tax disclosures. Significant judgment is required in evaluating the Group’s uncertain tax positions and determining its provision for income taxes. As of December 31, 2013 and 2014, the Group did not have any significant unrecognized uncertain tax positions or any interest or penalties associated with tax positions.
	In order to assess uncertain tax positions, the Group applies a more likely than not threshold and a two-step approach for the tax position measurement and financial statement recognition. Under the two-step approach, the first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon settlement.
Employee Benefits
	(u) Employee Benefits
	Full-time employees of the Group in the PRC are entitled to welfare benefits including pension, work-related injury benefits, maternity insurance, medical insurance, unemployment benefit and housing fund plans through a PRC government-mandated defined contribution plan. Chinese labor regulations require that the Group makes contributions to the government for these benefits based on certain percentages of employees’ salaries, up to a maximum amount specified by the local government. The Group has no legal obligation for the benefits beyond the contributions. The Group recorded employee benefit expenses of RMB21,287,847, RMB24,058,067 and RMB50,616,782 for the years ended December 31, 2012, 2013 and 2014, respectively.
Government Subsidies
	(v) Government Subsidies
	Government subsidies are cash subsidies received by the Group’s entities in the PRC from provincial and local government authorities. The government subsidies are granted from time to time at the discretion of the relevant government authorities. These subsidies are granted for general corporate purposes and to support the Group’s ongoing operations in the region. Cash subsidies are recorded in other operating income on the consolidated statements of comprehensive loss when received and when all conditions for their receipt have been satisfied. The Group recognized government subsidies of RMB773,727, RMB1,688,560 and RMB6,901,814 in the years ended December 31, 2012, 2013 and 2014, respectively.
Earnings (Loss) Per Share
	(w) Earnings (Loss) Per Share
	Basic earnings (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period using the two-class method. Under the two-class method, net income is allocated between ordinary shares and other participating securities based on their participating rights. Net loss is not allocated to other participating securities if based on their contractual terms they are not obligated to share in the losses. Diluted earnings (loss) per share is calculated by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary and dilutive ordinary equivalent shares outstanding during the period. Ordinary equivalent shares consist of shares issuable upon the conversion of the preferred shares using the if-converted method, and shares issuable upon the exercise of share options using the treasury stock method. Ordinary equivalent shares are not included in the denominator of the diluted loss per share calculation when inclusion of such shares would be anti-dilutive.
Comprehensive Income (Loss)
	(x) Comprehensive Income (Loss)
	Comprehensive income (loss) is defined as the change in equity of the Group during a period arising from transactions and other events and circumstances excluding transactions resulting from investments by shareholders and distributions to shareholders. Comprehensive income or loss is reported in the consolidated statements of comprehensive loss. Accumulated other comprehensive income (loss), as presented on the accompanying consolidated balance sheets, consists of accumulated foreign currency translation adjustments.
Segment Reporting
	(y) Segment Reporting
	In accordance with ASC 280, Segment Reporting, the Company’s chief operating decision maker, the Chief Executive Officer, reviews the consolidated results when making decisions about allocating resources and assessing performance of the Company as a whole and hence, the Company has only one reportable segment.
	The Company does not distinguish between markets or segments for the purpose of internal reporting. The Company’s long-lived assets are substantially all located in the PRC and substantially all the Company’s revenues are derived from within the PRC, therefore, no geographical segments are presented.
Deferred offering costs
	(z) Deferred Offering Costs
	Deferred offering costs consisted principally of legal, printing and registration costs in connection with the initial public offering (“IPO”) of Tuniu Corporation’s ordinary shares. Such costs were deferred until the closing of the offering, at which time the deferred costs were offset against the offering proceeds. In the event the offering was unsuccessful or aborted, the costs would be expensed. Deferred offering costs as of December 31, 2013 amounted to RMB2,127,187 were included in other non-current assets on the consolidated balance sheets. Such deferred offering costs were recorded as a reduction to the IPO proceeds upon completion of the Company’s IPO in May 2014.
Recently Issued Accounting Pronouncements
	(aa) Recently Issued Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-08, “Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity”. This update changed the threshold for reporting discontinued operations and added new disclosures for disposals. Under the updated guidance, a discontinued operation is defined as a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2014. The Group is in the process of evaluating the impact of adopting this guidance.
	In May 2014, the FASB and International Accounting Standards Board (“IASB”) issued their converged standard on revenue recognition. The objective of the revenue standard ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” is to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. The revenue standard contains principles that an entity will apply to determine the measurement of revenue and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. For public companies, the revenue standard is effective for the first interim period within annual reporting periods beginning after December 15, 2016 and early adoption is not permitted. The Group is in the process of evaluating the impact of adopting this guidance.
	In August 2014, the FASB issued ASU 2014-15, which provides guidance on determining when and how reporting entities must disclose going-concern uncertainties in their financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements (or within one year after the date on which the financial statements are available to be issued, when applicable). Further, an entity must provide certain disclosures if there is “substantial doubt about the entity’s ability to continue as a going concern.” The ASU is effective for annual periods ending after December 15, 2016, and interim periods thereafter; early adoption is permitted. The Group is in the process of evaluating the impact of adopting this guidance.
	In February 2015, the FASB issued ASU No. 2015-02, “Consolidation (Topic 810): Amendments to the Consolidation Analysis” (“ASU 2015-02”). ASU 2015-02 focuses on the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. The ASU simplifies consolidation accounting by reducing the number of consolidation models from four to two. In addition, the new standard simplifies the FASB Accounting Standards Codification and improves current guidance by: (i) placing more emphasis on risk of loss when determining a controlling financial interest; (ii) reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a VIE; and (iii) changing consolidation conclusions for public and private companies in several industries that typically make use of limited partnerships or VIEs. The ASU will be effective for periods beginning after December 15, 2015, for public companies. Early adoption is permitted, including adoption in an interim period.  The Group is in the process of evaluating the impact of adopting this guidance.

Organization_and_Principal_Act1

Organization and Principal Activities (Tables)	12 Months Ended
	Dec. 31, 2014
Schedule of Investments
Schedule of percentage of legal ownership in principal subsidiaries and consolidated Affiliated Entities
	As of December 31, 2014, the Company’s principal subsidiaries and consolidated Affiliated Entities are as follows:
	Name of subsidiaries and VIE	Date of establishment/acquisition		Place of		Percentage of
				incorporation		direct or indirect
						economic
						ownership
	Wholly owned subsidiaries of the Company:
	Tuniu (HK) Limited	Established on May 20, 2011		Hong Kong		100	%
	Tuniu (Nanjing) Information Technology Co., Ltd.	Established on August 24, 2011		PRC		100	%
	Beijing Tuniu Technology Co., Ltd. (“Beijing Tuniu”)	Established on September 8, 2008		PRC		100	%
	Variable Interest Entity (“VIE”)
	Nanjing Tuniu Technology Co., Ltd. (“Nanjing Tuniu”)	Established on December 18, 2006		PRC		100	%
	Subsidiaries of Variable Interest Entity (“VIE subsidiaries”)
	Shanghai Tuniu International Travel Service Co., Ltd.	Acquired on August 22, 2008		PRC		100	%
	Nanjing Tuniu International Travel Service Co., Ltd.	Acquired on December 22, 2008		PRC		100	%
	Beijing Tuniu International Travel Service Co., Ltd.	Acquired on November 18, 2009		PRC		100	%
	Nanjing Tuzhilv Tickets Sales Co., Ltd.	Established on April 19, 2011		PRC		100	%
The Affiliated Entities
Schedule of Investments
Schedule of consolidated financial information
		As of December 31,
		2013		2014
						US$ (Note 2(c))
	ASSETS
	Current assets
	Cash and cash equivalents	80,941,498		102,355,892		16,496,775
	Restricted cash	9,250,000		44,030,000		7,096,348
	Short-term investments	227,000,000		100,000,000		16,117,074
	Accounts receivable, net	1,651,087		8,644,481		1,393,237
	Intercompany receivables	13,746,342		65,474,340		10,552,548
	Prepayments and other current assets	282,575,230		566,731,065		91,340,469
	Total current assets	615,164,157		887,235,778		142,996,451
	Non-current assets
	Property and equipment, net	6,022,935		22,600,370		3,642,518
	Other non-current assets	3,432,475		16,265,031		2,621,447
	Total non-current assets	9,455,410		38,865,401		6,263,965
	Total assets	624,619,567		926,101,179		149,260,416
	LIABILITIES
	Current liabilities
	Accounts payable	288,379,189		373,463,921		60,191,458
	Salary and welfare payable	43,247,478		66,074,540		10,649,283
	Taxes payable	979,842		2,078,879		335,054
	Advances from customers	396,737,968		638,802,791		102,956,321
	Intercompany payables	37,678,689		52,114,075		8,399,264
	Accrued expenses and other current liabilities	24,088,189		87,657,457		14,127,818
	Total current liabilities	791,111,355		1,220,191,663		196,659,198
	Total liabilities	791,111,355		1,220,191,663		196,659,198
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Net revenues	1,115,480,429		1,937,485,065		3,736,473,491		602,210,214
	Net loss	(42,581,564	)	(39,596,629	)	(128,298,694	)	(20,677,996	)
	Net cash provided by/(used in) operating activities	92,391,338		161,148,389		(51,446,481	)	(8,291,668	)
	Net cash provided by/(used in) investing activities	(29,022,592	)	(201,058,056	)	72,160,875		11,630,222
	Net cash provided by financing activities	—		—		700,000		112,820

Principal_Accounting_Policies_1

Principal Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Principal Accounting Policies
Cash and Cash Equivalents
		RMB			RMB Equivalent (US$)			RMB Equivalent (HK$)			Total in RMB
		Overseas	China		Overseas	China		Overseas	China
			Non VIE	VIE		Non VIE	VIE		Non VIE	VIE
	December 31, 2013	294,051,240	14,280,676	80,573,735	29,047,618	953,126	367,763	128,677	—	—	419,402,835
	December 31, 2014	1,810,709	6,410,240	102,338,960	1,323,654,351	23,309,701	16,932	181,483	—	—	1,457,722,376
Schedule of estimated useful lives of property and equipment
	Category	Estimated useful life
	Computers and equipment	3 years
	Furniture and fixtures	3 - 5 years
	Software	5 years
	Leasehold improvements	Over the shorter of the lease term or the estimated useful life of the asset 1 – 9 years
Schedule of classification of share-based compensation expense
		For the Years Ended December 31,
		2012	2013	2014
					US$ (Note 2(c))
	Cost of revenue	—	—	799,880	128,917
	Research and product development	—	—	1,971,655	317,773
	Sales and marketing	—	—	856,858	138,100
	General and administrative	—	—	35,544,285	5,728,699
	Total	—	—	39,172,678	6,313,489

Risks_and_Concentration_Tables

Risks and Concentration (Tables)	12 Months Ended
	Dec. 31, 2014
Risks and Concentration
Summary of customers with greater than 10% of the accounts receivables
		As of December 31,
		2013	2014
	Customer A	*	26.0	%
	*Less than 10%

Prepayments_and_Other_Current_1

Prepayments and Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Prepayments and Other Current Assets
Summary of prepayments and other current assets
		As of December 31,
		2013	2014
				US$ (Note 2(c))
	Prepayments to suppliers	274,418,870	498,298,101	80,311,076
	Interest income receivable	3,767,451	6,509,860	1,049,199
	Prepayment for advertising expenses	3,007,874	53,664,403	8,649,132
	Others	5,366,052	16,824,542	2,711,624
	Total	286,560,247	575,296,906	92,721,031

Property_and_Equipment_Net_Tab

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2014
Property and Equipment, net
Schedule of property and equipment, net
		As of December 31,
		2013		2014
						US$ (Note 2(c))
	Computers and equipment	25,307,217		43,961,251		7,085,268
	Leasehold improvements	19,649,572		43,684,247		7,040,623
	Furniture and fixtures	3,212,488		6,342,892		1,022,289
	Software	3,537,387		11,919,553		1,921,083
	Subtotal	51,706,664		105,907,943		17,069,262
	Less: Accumulated depreciation	(26,855,361	)	(36,542,052	)	(5,889,510	)
	Property and equipment subject to depreciation	24,851,303		69,365,891		11,179,752
	Construction in progress	—		2,944,399		474,551
	Total	24,851,303		72,310,290		11,654,303

Accrued_Expenses_and_Other_Cur1

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Accrued Expenses and Other Current Liabilities
Summary of accrued expenses and other current liabilities
		As of December 31,
		2013	2014
				US$ (Note 2(c))
	Deposits from customers	11,320,500	27,807,294	4,481,722
	Deposits from suppliers	210,000	5,920,160	954,157
	Accrued liabilities related to customers incentive program	5,760,470	14,763,617	2,379,463
	Accrued professional service fees	3,467,453	18,360,616	2,959,194
	Accrued sales and marketing expenses	3,029,033	12,455,256	2,007,423
	Funds collected on behalf of insurance companies	670,917	4,495,481	724,540
	Advanced payments received from banks	792,104	11,036,168	1,778,707
	Others	4,481,613	15,021,524	2,421,031
	Total	29,732,090	109,860,116	17,706,237

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Taxes
Schedule of reconciliation between the effective income tax rate and the PRC statutory income tax rate
		For the Years Ended December 31,
		2012		2013		2014
		%		%		%
	PRC Statutory income tax rates	25		25		25
	Change in valuation allowance	(19.9	)	(20.1	)	(22.4	)
	Permanent book — tax difference	(5.2	)	(4.9	)	(12.1	)
	Difference in EIT rates of certain subsidiaries	0		0		0
	Effect of tax holiday	—		—		9.5
	Total	(0.1	)	0		0
Schedule of aggregate amount and per share effect of the tax holidays
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Aggregate amount	—		—		(42,567,098	)	(6,860,571	)
	Basic net loss per share effect	—		—		(0.40	)	(0.06	)
	Diluted net loss per share effect	—		—		(0.40	)	(0.06	)
Schedule of significant components of deferred tax assets and liabilities
		As of December 31,
		2013		2014
						US$ (Note 2(c))
	Current deferred tax assets:
	Accruals and others	3,726,090		16,299,132		2,626,943
	Less: valuation allowance	(3,726,090	)	(16,299,132	)	(2,626,943	)
	Total current deferred tax assets, net	—		—		—
	Non-current deferred tax assets:
	Net operating loss carry forwards	40,980,595		133,592,894		21,531,266
	Carryforwards of un-deducted advertising expenses	1,414,030		925,081		149,096
	Subtotal	42,394,625		134,517,975		21,680,362
	Less: valuation allowance	(42,394,625	)	(134,517,975	)	(21,680,362	)
	Total non-current deferred tax assets, net	—		—		—
Schedule of movement of valuation allowance
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Balance as the beginning of the year	23,627,054		34,315,042		46,120,715		7,433,310
	Additions	10,687,988		11,805,673		112,421,222		18,119,012
	Utilization of previously unrecognized tax losses and un-deductible advertising expenses	—		—		(7,724,830	)	(1,245,017	)
	Balance as the end of the year	34,315,042		46,120,715		150,817,107		24,307,305

Sharebased_Compensation_Expens1

Share-based Compensation Expenses (Tables)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Expenses
Summary the Company's option activity under the 2008 plan
		Number of		Weighted	Weighted	Aggregate Intrinsic	Weighted
		Options		Average	Average	Value	Average
				Exercise	Remaining		Grant Date
				Price	Contractual Life		Fair Value
				US$	In Years	US$
	Outstanding at January 1, 2014	17,631,953		0.37	3.67	28,284,725	0.49
	Granted	6,477,000		3.08	—	—	3.57
	Exercised	(2,332,851	)	0.24	—	—	0.13
	Forfeited	(510,256	)	2.16	—	—	1.49
	Outstanding at December 31, 2014	21,265,846		1.17	4.88	60,164,810	1.44
	Vested and expected to vest at December 31, 2014	20,614,680		1.15	4.82	58,822,488	1.41
	Exercisable at December 31, 2014	10,127,642		0.31	2.67	37,387,103	0.38
Schedule of assumptions used to estimate the fair value of option grant on the date of grant
		2012		2013	2014
	Expected volatility	55%		50-52%	50-51.1%
	Risk-free interest rate	1.52%		1.08-1.75%	1.99-2.6%
	Exercise multiple	2.2-2.8		2.2-2.8	2.2-2.8
	Expected dividend yield	0%		0%	0%
	Expected term (in years)	6		6	10-Jun
	Expected forfeiture rate (post-vesting)	0-20%		0-20%	0-20%
	Fair value of the common share on the date of option grant	US$0.76		US$0.91-1.98	US$3.33-6.98
		RMB4.78		RMB5.63-12.26	RMB20.66-43.31
Summary of restricted shares activity
		Numbers of		Weighted
		restricted		average grant
		shares		date fair value
	Outstanding as of December 31, 2013	—		—
	Grant	210,000		3.36
	Vested	(30,618	)	3.36
	Forfeited	—		—
	Outstanding as of December 31, 2014	179,382		3.36
	Vested and expected to vest at December 31, 2014	179,382		3.36

Loss_Per_Share_Tables

Loss Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Loss Per Share
Schedule of computation of basic and diluted net loss per share
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Numerator:
	Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Deemed dividends upon redesignation of Series A Preferred Shares	—		(59,428,400	)	—		—
	Deemed dividends upon modification of Series D Preferred Shares	—		—		(15,605,908	)	(2,515,216	)
	Numerator for basic and diluted net loss per share	(107,189,923	)	(139,060,479	)	(463,463,759	)	(74,696,797	)
	Denominator:
	Weighted average number of ordinary shares outstanding-basic and diluted	26,000,000		26,000,000		105,746,313		105,746,313
	Loss per share-basic and diluted	(4.12	)	(5.35	)	(4.38	)	(0.71	)
Schedule of anti-dilutive securities which could potentially dilute basic loss per share in the future
		2012		2013		2014
	Series A Preferred Shares	13,506,748		13,506,748		—
	Series B Preferred Shares	21,564,115		21,564,115		—
	Series C Preferred Shares	25,782,056		25,782,056		—
	Series D Preferred Shares	21,771,472		21,771,472		—
	Options and restricted shares	10,587,771		17,631,953		21,445,228
	Total	93,212,162		100,256,344		21,445,228

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies.
Schedule of future minimum payments under non-cancelable operating leases	As of December 31, 2014, future minimum commitments under non-cancelable agreements were as follows:
	Years Ending December 31,	RMB	US$
	2015	22,501,858	3,626,641
	2016	21,450,605	3,457,210
	2017	18,894,220	3,045,196
	2018	13,235,800	2,133,224
	2019	13,162,292	2,121,376
	Thereafter	19,611,943	3,160,871
	Total	108,856,718	17,544,518

Recovered_Sheet1

Condensed Financial Information of the Parent Company (Tables)	12 Months Ended
	Dec. 31, 2014
CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY
Schedule of balance sheets
	CONDENSED BALANCE SHEETS
	(RMB, except share data and per share data, or otherwise noted)
		December 31,
		2013		2014
						US$ (Note 2(c))
	ASSETS
	Current assets
	Cash and cash equivalents	301,976,515		1,323,279,666		213,273,969
	Amounts due from subsidiaries	17,860,046		17,999,974		2,901,069
	Prepayments and other current assets	1,247,811		1,561,058		251,597
	Total current assets	321,084,372		1,342,840,698		216,426,635
	Other non-current assets	2,127,187		—		—
	Total assets	323,211,559		1,342,840,698		216,426,635
	LIABILITIES, MEZZANINE EQUITY AND SHAREHOLDERS’ EQUITY/(DEFICIT)
	Current liabilities
	Accrued expenses and other current liabilities	4,722,120		16,722,535		2,695,184
	Total current liabilities	4,722,120		16,722,535		2,695,184
	Non-current liabilities
	Investments (deficit) in subsidiaries and VIE	27,133,711		(82,605,055	)	(13,313,518	)
	Total non-current liabilities	27,133,711		(82,605,055	)	(13,313,518	)
	Total liabilities	31,855,831		(65,882,520	)	(10,618,334	)
	Mezzanine equity
	Series A Convertible Preferred Shares (US$0.0001 par value; 20,000,000 and nil shares authorized as of December 31, 2013 and December 31, 2014, respectively, 13,506,748 and nil shares issued and outstanding as of December 31, 2013 and December 31, 2014 respectively)	9,360,443		—		—
	Series B Convertible Preferred Shares (US$0.0001 par value; 21,564,115 and nil shares authorized, issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	48,890,116		—		—
	Series C Convertible Preferred Shares (US$0.0001 par value; 25,782,056 and nil shares authorized,  issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	290,255,691		—		—
	Series D Convertible Preferred Shares (US$0.0001 par value; 21,771,472 and nil shares authorized,  issued and outstanding as of December 31, 2013 and December 31, 2014, respectively)	367,934,993		—		—
	Total mezzanine equity	716,441,243		—		—
	Shareholders’ equity/(deficit)
	Ordinary shares (US$0.0001 par value; 126,999,531 authorized and 26,000,000 shares issued and outstanding as of December 31, 2013; 1,000,000,000 shares (including 780,000,000 Class A shares, 120,000,000 Class B shares and 100,000,000 shares to be designated by the Board of Directors) authorized and 188,435,922 shares (including 82,487,876 Class A shares and 105,948,046 Class B shares) issued and outstanding as of December 31, 2014)	17,757		121,068		19,513
	Additional paid-in capital	200,000		2,298,726,639		370,487,483
	Accumulated other comprehensive loss	(19,723,270	)	(21,080,728	)	(3,397,597	)
	Accumulated deficit	(405,580,002	)	(869,043,761	)	(140,064,430	)
	Total shareholders’ equity/(deficit)	(425,085,515	)	1,408,723,218		227,044,969
	Total liabilities, mezzanine equity and shareholders’ equity/(deficit)	323,211,559		1,342,840,698		216,426,635
Schedule of statements of comprehensive loss
	CONDENSED STATEMENTS OF COMPREHENSIVE LOSS
	(RMB, except share data and per share data, or otherwise noted)
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Revenues	—		—		—		—
	Cost of revenues	—		—		—		—
	Gross profit	—		—		—		—
	Operating expenses
	Research and product development	—		—		—		—
	Sales and marketing	—		—		—		—
	General and administrative	(2,090,100	)	(4,026,494	)	(5,617,466	)	(905,371	)
	Share of loss of subsidiaries and affiliated entities	(108,975,736	)	(77,414,051	)	(446,158,957	)	(71,907,771	)
	Other operating income	—		—		415,259		66,928
	Total operating expenses	(111,065,836	)	(81,440,545	)	(451,361,164	)	(72,746,214	)
	Loss from operations	(111,065,836	)	(81,440,545	)	(451,361,164	)	(72,746,214	)
	Other income/(expenses)
	Interest income	4,356,806		1,737,572		6,618,634		1,066,730
	Foreign exchange related gains/(losses),net	(480,893	)	70,894		(3,115,321	)	(502,097	)
	Loss before income tax expense	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Income tax expense	—		—		—		—
	Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Deemed dividends to preferred shareholders	—		(59,428,400	)	(15,605,908	)	(2,515,216	)
	Net loss attributable to ordinary shareholders	(107,189,923	)	(139,060,479	)	(463,463,759	)	(74,696,797	)
	Net loss	(107,189,923	)	(79,632,079	)	(447,857,851	)	(72,181,581	)
	Other comprehensive loss
	Foreign currency translation adjustment, net of nil tax	(237,281	)	(5,331,216	)	(1,357,458	)	(218,783	)
	Comprehensive loss	(107,427,204	)	(84,963,295	)	(449,215,309	)	(72,400,364	)
Schedule of statements of cash flows
	CONDENSED STATEMENTS OF CASH FLOWS
	(RMB, except share data and per share data, or otherwise noted)
		For the Years Ended December 31,
		2012		2013		2014
								US$ (Note 2(c))
	Cash provided by (used in) operating activities	(489,138	)	(3,057,858	)	2,636,388		424,908
	Cash used in investing activities	(148,778,745	)	(93,595,112	)	(518,689,918	)	(83,597,640	)
	Cash provided by financing activities	—		306,360,473		1,540,396,658		248,266,876
	Effect of exchange rate changes on cash and cash equivalents	(717,845	)	(5,250,519	)	(3,039,977	)	(489,955	)
	Net increase /(decrease) in cash and cash equivalents	(149,985,728	)	204,456,984		1,021,303,151		164,604,189
	Cash and cash equivalents at the beginning of year	247,505,259		97,519,531		301,976,515		48,669,780
	Cash and cash equivalents at the end of year	97,519,531		301,976,515		1,323,279,666		213,273,969
	Supplemental disclosure of non-cash investing and financing activities
	Deemed dividends to preferred shareholders	—		59,428,400		15,605,908		2,515,216
	Accrued issuance cost related to private placement	—		—		14,076,285		2,268,685
	Accrual related to deferred initial public offering costs	—		2,127,187		—		—
	Receivables related to exercise of stock option	—		—		(1,019,748	)	(164,354	)

Organization_and_Principal_Act2

Organization and Principal Activities (Details)	12 Months Ended
	Dec. 31, 2014
Nanjing Tuniu
Principal subsidiaries and consolidated Affiliated Entities
Economic interest held (as a percent)	100.00%
Shanghai Tuniu International Travel Service Co., Ltd.
Principal subsidiaries and consolidated Affiliated Entities
Economic interest held (as a percent)	100.00%
Nanjing Tuniu International Travel Service Co., Ltd.
Principal subsidiaries and consolidated Affiliated Entities
Economic interest held (as a percent)	100.00%
Beijing Tuniu International Travel Service Co., Ltd.
Principal subsidiaries and consolidated Affiliated Entities
Economic interest held (as a percent)	100.00%
Nanjing Tuzhilv Tickets Sales Co., Ltd.
Principal subsidiaries and consolidated Affiliated Entities
Economic interest held (as a percent)	100.00%
Tuniu (HK) Limited
Principal subsidiaries and consolidated Affiliated Entities
Equity interest held (as a percent)	100.00%
Tuniu (Nanjing) Information Technology Co., Ltd.
Principal subsidiaries and consolidated Affiliated Entities
Equity interest held (as a percent)	100.00%
Beijing Tuniu
Principal subsidiaries and consolidated Affiliated Entities
Equity interest held (as a percent)	100.00%

Organization_and_Principal_Act3

Organization and Principal Activities (Details 2) (CNY)	0 Months Ended	1 Months Ended	12 Months Ended
	Sep. 17, 2008	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nanjing Tuniu | Purchase Option Agreement | Beijing Tuniu
Principal subsidiaries and consolidated Affiliated Entities
Value of equity interest	1,800,000	2,430,000
Equity interest purchase option term	10 years
Nanjing Tuniu | Cooperation Agreement | Beijing Tuniu
Principal subsidiaries and consolidated Affiliated Entities
Monthly service fees as percentage of profits from agreement			100.00%
Number of consecutive years of not able to provide technology consulting and services as the agreement	3 years
Consolidated affiliated entities | Cooperation Agreement
Principal subsidiaries and consolidated Affiliated Entities
Technology consulting and service fees received			20,535,068	22,586,880	20,095,534

Organization_and_Principal_Act4

Organization and Principal Activities (Details 3)	12 Months Ended						12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY	USD ($)	CNY	The Affiliated Entities	The Affiliated Entities	The Affiliated Entities	The Affiliated Entities	Group	Group	Group	Group	Group	Group
							USD ($)	CNY	CNY	CNY	CNY	CNY	CNY	USD ($)	USD ($)	USD ($)
Principal subsidiaries and consolidated Affiliated Entities
Accumulated deficit	($140,064,430)	-869,043,761	-405,580,002					297,000,000						$869,000,000	$406,000,000	$267,000,000
Current assets:
Cash and cash equivalents	234,942,200	1,457,722,376	419,402,835	299,237,536	67,595,467	332,100,808	16,496,775	102,355,892	80,941,498
Restricted cash	7,096,348	44,030,000	9,250,000				7,096,348	44,030,000	9,250,000
Short-term investments	75,519,776	468,570,000	327,000,000				16,117,074	100,000,000	227,000,000
Accounts receivable, net	1,393,237	8,644,481	1,651,087				1,393,237	8,644,481	1,651,087
Intercompany receivable							10,552,548	65,474,340	13,746,342
Prepayments and other current assets	92,721,031	575,296,906	286,560,247				91,340,469	566,731,065	282,575,230
Total current assets	411,672,592	2,554,263,763	1,043,864,169				142,996,451	887,235,778	615,164,157
Non-current assets:
Property and equipment, net	11,654,303	72,310,290	24,851,303				3,642,518	22,600,370	6,022,935
Other non-current assets	2,972,517	18,443,279	6,657,304				2,621,447	16,265,031	3,432,475
Total non-current assets	14,626,820	90,753,569	31,508,607				6,263,965	38,865,401	9,455,410
Total assets	426,299,412	2,645,017,332	1,075,372,776				149,260,416	926,101,179	624,619,567
Current liabilities (including current liabilities of the Affiliated Entities without recourse to the Company amounting to RMB753,432,666 and RMB1,168,077,588 (US$188,259,934), as of December 31, 2013 and December 2014, respectively):
Accounts payable	61,680,741	382,704,323	288,964,931				60,191,458	373,463,921	288,379,189
Salary and welfare payable	12,690,481	78,739,361	47,388,096				10,649,283	66,074,540	43,247,478
Taxes payable	625,994	3,884,044	1,323,961				335,054	2,078,879	979,842
Advances from customers	102,960,351	638,827,791	396,737,968				102,956,321	638,802,791	396,737,968
Intercompany payables							8,399,264	52,114,075	37,678,689
Accrued expenses and other current liabilities	17,706,237	109,860,116	29,732,090				14,127,818	87,657,457	24,088,189
Total current liabilities	195,663,804	1,214,015,635	764,147,046				196,659,198	1,220,191,663	791,111,355
Total liabilities	199,254,443	1,236,294,114	784,017,048				196,659,198	1,220,191,663	791,111,355
Net revenues	569,728,780	3,534,939,179	1,949,687,414	1,112,880,580			602,210,214	3,736,473,491	1,937,485,065	1,115,480,429
Net loss	-72,181,581	-447,857,851	-79,632,079	-107,189,923			-20,677,996	-128,298,694	-39,596,629	-42,581,564	-448,000,000	-80,000,000	-107,000,000
Net cash provided by/(used in) operating activities	-43,693,582	-271,101,198	116,736,250	14,663,258			-8,291,668	-51,446,481	161,148,389	92,391,338	271,000,000	117,000,000	15,000,000
Net cash provided by/(used in) investing activities	-36,734,567	-227,923,296	-304,217,892	-46,785,852			-11,630,222	72,160,875	-201,058,056	-29,022,592
Net cash provided by financing activities	$248,266,876	1,540,396,658	306,360,473				$112,820	700,000

Principal_Accounting_Policies_2

Principal Accounting Policies (Details)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

CNY

CNY

CNY

USD ($)

USD ($)

CNY

RMB Reporting currency and RMB functional currency

RMB Reporting currency and RMB functional currency

RMB Reporting currency and RMB functional currency

RMB Reporting currency and RMB functional currency

RMB Reporting currency and RMB functional currency

RMB Reporting currency and RMB functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and US Dollar functional currency

RMB Reporting currency and HK Dollar functional currency

RMB Reporting currency and HK Dollar functional currency

Overseas

Overseas

PRC

PRC

PRC

PRC

Overseas

Overseas

PRC

PRC

PRC

PRC

Overseas

Overseas

CNY

CNY

Consolidated affiliated entities

Consolidated affiliated entities

Non VIE

Non VIE

CNY

CNY

Consolidated affiliated entities

Consolidated affiliated entities

Non VIE

Non VIE

CNY

CNY

CNY

CNY

CNY

CNY

CNY

CNY

CNY

CNY

Functional Currency and Foreign Currency Translation

Exchange rate

6.2046

Cash and Cash Equivalents

Cash and cash equivalents

1,457,722,376

419,402,835

299,237,536

$234,942,200

$67,595,467

332,100,808

1,810,709

294,051,240

102,338,960

80,573,735

6,410,240

14,280,676

1,323,654,351

29,047,618

16,932

367,763

23,309,701

953,126

181,483

128,677

Short-term Investments

Other-than-temporary impairment of short-term investments

0

0

0

Accounts Receivable

Allowance for doubtful accounts

0

0

Principal_Accounting_Policies_3

Principal Accounting Policies (Details 2)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2014
	USD ($)	CNY	CNY	Computers and equipment	Furniture and fixtures	Furniture and fixtures	Software	Software	Software	Leasehold improvements	Leasehold improvements
					Minimum	Maximum	CNY	CNY	CNY	Minimum	Maximum
Property and Equipment
Estimated useful life				3 years	3 years	5 years	5 years			1 year	9 years
Cost capitalized							6,836,756	980,187	0
Amortization expense							727,073	73,833	0
Unamortized amount	$11,654,303	72,310,290	24,851,303				7,016,037

Principal_Accounting_Policies_4

Principal Accounting Policies (Details 3)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

USD ($)

CNY

CNY

CNY

2008 Plan

Cost of Revenues

Cost of Revenues

Research and product development

Research and product development

Sales and marketing

Sales and marketing

General and administrative

General and administrative

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

Share-based compensation

Award service period

4 years

Terminate period prior to the occurrence of an exercisable event

3 months

Share-based compensation expense

$6,313,489

39,172,678

$128,917

799,880

$317,773

1,971,655

$138,100

856,858

$5,728,699

35,544,285

Revenue Recognition

Term of customer reward program

2 years

2 years

Liabilities recorded related to membership points and cash rewards

2,379,463

14,763,617

5,760,470

VAT tax rate, currently applicable (as a percent)

6.00%

6.00%

Business tax rate, no longer applicable (as a percent)

5.00%

5.00%

Intangible Assets

Impairment charges

0

0

0

Cost of Revenues

Losses of committed tour reservations

4,134,149

6,681,730

1,567,087

Advertising Expenses

Advertising expense

379,205,377

103,142,138

52,112,680

Leases

Deferred rent ,current liabilities

4,243,520

0

Deferred rent ,non-current liabilities

22,278,479

19,870,002

4,243,520

Principal_Accounting_Policies_5

Principal Accounting Policies (Details 4) (CNY)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	item
Employee Benefits
Employee benefit expenses	50,616,782	24,058,067	21,287,847
Government Subsidies
Government subsidies	6,901,814	1,688,560	773,727
Segment Reporting
Number of reportable segments	1
Deferred offering costs
Deferred offering costs		2,127,187

Risks_and_Concentration_Detail

Risks and Concentration (Details) (Accounts receivable, Customer Concentration Risk, Customer A)	12 Months Ended
	Dec. 31, 2014
Accounts receivable | Customer Concentration Risk | Customer A
Credit and Concentration Risks
Percentage of revenue by major customer	26.00%

Prepayments_and_Other_Current_2

Prepayments and Other Current Assets (Details)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
	USD ($)	CNY	CNY
Prepayments and Other Current Assets
Prepayments to suppliers	$80,311,076	498,298,101	274,418,870
Interest income receivable	1,049,199	6,509,860	3,767,451
Prepayment for advertising expenses	8,649,132	53,664,403	3,007,874
Others	2,711,624	16,824,542	5,366,052
Total	$92,721,031	575,296,906	286,560,247

Property_and_Equipment_Net_Det

Property and Equipment, Net (Details)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

USD ($)

CNY

CNY

CNY

Computers and equipment

Computers and equipment

Computers and equipment

Leasehold improvements

Leasehold improvements

Leasehold improvements

Furniture and fixtures

Furniture and fixtures

Furniture and fixtures

Software

Software

Software

USD ($)

CNY

CNY

USD ($)

CNY

CNY

USD ($)

CNY

CNY

USD ($)

CNY

CNY

Property and equipment, net

Property and equipment, gross

$17,069,262

105,907,943

51,706,664

$7,085,268

43,961,251

25,307,217

$7,040,623

43,684,247

19,649,572

$1,022,289

6,342,892

3,212,488

$1,921,083

11,919,553

3,537,387

Less: Accumulated depreciation

-5,889,510

-36,542,052

-26,855,361

Property and equipment subject to depreciation

11,179,752

69,365,891

24,851,303

Construction in progress

474,551

2,944,399

Property and equipment, net

11,654,303

72,310,290

24,851,303

7,016,037

Depreciation expenses

$1,751,739

10,868,838

8,764,423

10,111,622

Accrued_Expenses_and_Other_Cur2

Accrued Expenses and Other Current Liabilities (Details)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
	USD ($)	CNY	CNY
Accrued Expenses and Other Current Liabilities
Deposits from customers	$4,481,722	27,807,294	11,320,500
Deposits from suppliers	954,157	5,920,160	210,000
Accrued liabilities related to customer incentive programs	2,379,463	14,763,617	5,760,470
Accrued professional service fees	2,959,194	18,360,616	3,467,453
Accrued sales and marketing expenses	2,007,423	12,455,256	3,029,033
Funds collected on behalf of insurance companies	724,540	4,495,481	670,917
Advanced payments received from banks	1,778,707	11,036,168	792,104
Others	2,421,031	15,021,524	4,481,613
Total	$17,706,237	109,860,116	29,732,090

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended			60 Months Ended	0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jan. 01, 2008
Income taxes
Income tax rate (as a percent)	25.00%	25.00%	25.00%
Cayman
Income taxes
Withholding income tax	0			0
Hong Kong
Income taxes
Income tax rate (as a percent)				16.50%
PRC
Income taxes
Withholding tax rate (as a percent)					25.00%
Withholding tax rate on dividends distributed by a FIE (as a percent)					10.00%
Maximum withholding tax rate, if 25% or more shares of the FIE in a PRC-resident enterprise is held by the immediate holding entity, Hong Kong tax resident (as a percent)	5.00%
Minimum percentage of equity interest in a PRC-resident enterprise to be held by a qualified Hong Kong tax resident for reduced withholding tax rate	25.00%
PRC | Nanjing Tuniu
Income taxes
HNTE certificate valid period after awarded	3 years
Preferential tax rate (as a percent)	15.00%
Tax exemption period followings the first profitable year	2 years
Reduction in tax rate for three years following the exemptions period (as a percent)	50.00%
Period for reduction in tax percentage	3 years

Income_Taxes_Details_2

Income Taxes (Details 2)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
	USD ($)	CNY	CNY		PRC
Reconciliation between the statutory EIT rate and the effective tax rate
PRC statutory income tax rate (as a percent)	25.00%	25.00%	25.00%	25.00%
Change in valuation allowance (as a percent)	-22.40%	-22.40%	-20.10%	-19.90%
Permanent book - tax difference (as a percent)	-12.10%	-12.10%	-4.90%	-5.20%
Difference in EIT rates of certain subsidiaries( as a percent)	0.00%	0.00%	0.00%	0.00%
Effect of tax holiday (as a percent)	9.50%	9.50%
Effective tax rate (as a percent)	0.00%	0.00%	0.00%	-0.10%
Aggregate amount and per share effect of the tax holidays
Aggregate amount	($6,860,571)	-42,567,098
Basic net loss per share effect	($0.06)	-0.4
Diluted net loss per share effect	($0.06)	-0.4
Current Deferred tax assets:
Accruals and others	2,626,943	16,299,132	3,726,090
Less: valuation allowance	-2,626,943	-16,299,132	-3,726,090
Non-current Deferred tax assets:
Net operating loss carryforwards	21,531,266	133,592,894	40,980,595
Carryforwards of un-deducted advertising expenses	149,096	925,081	1,414,030
Subtotal	21,680,362	134,517,975	42,394,625
Less: valuation allowance	-21,680,362	-134,517,975	-42,394,625
Income taxes
Net operating loss carryforwards		534,371,576
Carryforward period for net operating losses					5 years
Net operating loss carryforwards will start to expire in 2015		7,990,793

Income_Taxes_Details_3

Income Taxes (Details 3)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY
Movement of valuation allowance
Balance at beginning of the year	$7,433,310	46,120,715	34,315,042	23,627,054
Additions	18,119,012	112,421,222	11,805,673	10,687,988
Utilization of previously unrecognized tax losses and un-deductible advertising expenses	-1,245,017	-7,724,830
Balance at the end of the year	$24,307,305	150,817,107	46,120,715	34,315,042

Convertible_Preferred_Shares_D

Convertible Preferred Shares (Details)

Dec. 31, 2013

Dec. 31, 2014

Mar. 31, 2011

Mar. 31, 2011

Aug. 31, 2008

Aug. 31, 2008

Dec. 31, 2009

Dec. 31, 2009

Mar. 31, 2011

Mar. 31, 2011

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

Aug. 31, 2013

CNY

Convertible Preferred Stock

Series A Preferred Shares

Series A Preferred Shares

Series A Preferred Shares

Series A Preferred Shares

Series B Preferred Shares

Series B Preferred Shares

Series C Preferred Shares

Series C Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2011

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Redesignation of Series A Preferred Shares to Series D Preferred Shares in 2013

Gobi

Gobi

Gobi

Gobi

DCM and Gobi

DCM and Gobi

Institutional investors

Institutional investors

Esta

Esta

Gobi

Gobi

Series A Preferred Shares

Series A Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Gobi

Series A Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

Gobi

Gobi

Gobi

Gobi

Esta

Esta

Gobi

Gobi

Gobi

Gobi

Gobi

Gobi

item

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

DCM V, L.P., DCM Affiliates Fund V, L.P. and DCM Hybrid RMB Fund, L.P.

DCM V, L.P., DCM Affiliates Fund V, L.P. and DCM Hybrid RMB Fund, L.P.

DCM V, L.P.

DCM Affiliates Fund V, L.P.

DCM Hybrid RMB Fund, L.P.

USD ($)

CNY

Convertible Preferred Shares

Number of shares issued

20,000,000

20,000,000

21,564,115

21,564,115

25,782,056

25,782,056

18,142,893

18,142,893

2,864,673

2,864,673

15,278,220

15,278,220

Purchase price of shares issued (in dollars per share)

$0.10

0.68

$0.35

2.37

$1.75

11.45

$2.76

16.99

$2.76

16.99

Consideration received in cash on issuance of shares

$2,000,000

13,660,360

$7,500,000

51,211,500

$45,000,000

295,183,500

$50,000,000

308,328,500

$45,000,000

277,605,000

$10,000,000

61,666,000

Number of institutional investors

4

4

Conversion ratio for convertible preferred shares

1

Number of preferred shares repurchased

2,864,673

2,864,673

Number of shares repurchased

3,628,579

Repurchase price (in dollars per share)

$1.75

11.45

Aggregate repurchase price

5,000,000

32,809,002

Carrying value of shares

716,441,243

1,879,741

Redesignation ratio of shares

1

1

Price at which shares are redesignated

5,000,000

30,723,500

Consideration paid to the company on issuance of shares by shareholder, pursuant to certain transaction agreement

5,000,000

30,723,500

Redesignation of Preferred Shares

3,628,579

Value of redesignated preferred shares

$5,000,000

30,723,500

Number of shares transferred pursuant to certain transaction agreement

1,297,765

31,666

2,299,148

Convertible_Preferred_Shares_D1

Convertible Preferred Shares (Details 2)

12 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Apr. 28, 2014

29-May-14

Apr. 28, 2014

Apr. 28, 2014

Apr. 28, 2014

Apr. 28, 2014

29-May-14

29-May-14

29-May-14

29-May-14

USD ($)

CNY

CNY

Convertible Preferred Stock

Series A Preferred Shares

Series B Preferred Shares

Series C Preferred Shares

Series D Preferred Shares

Class A ordinary shares

Class B ordinary shares

QIPO

QIPO

QIPO

QIPO

Initial public offering

Initial public offering

Initial public offering

Initial public offering

item

USD ($)

CNY

Maximum

Series D Preferred Shares

Series D Preferred Shares

Series D Preferred Shares

ADS

USD ($)

CNY

USD ($)

Convertible Preferred Shares

Shares

21,771,472

Dividends rate (as a percent)

8.00%

8.00%

8.00%

Liquidation rate (as a percent)

150.00%

100.00%

100.00%

100.00%

Conversion ratio for convertible preferred shares

1

1

1

Percentage of shareholders required for automatic conversion at the date specified by written consent or agreement of shareholders

80.00%

Offering price per ADS (in dollars or RMB per share)

$10

Number of ordinary shares per ADS

3

Conversion amount

$60,000,000

363,222,000

Divided factor of initial public offering price per ADS (as a percent)

80.00%

80.00%

Deemed dividends

$2,515,216

15,605,908

59,428,400

$2,506,168

15,605,908

Conversion of Series D Convertible Preferred Shares into ordinary shares upon the completion of initial public offering ( in shares)

25,000,000

Ordinary_Shares_Details

Ordinary Shares (Details)

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

Feb. 13, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Feb. 13, 2014

Dec. 31, 2014

Feb. 13, 2014

Dec. 31, 2014

Dec. 31, 2014

9-May-14

9-May-14

9-May-14

Dec. 31, 2014

Dec. 15, 2014

Dec. 15, 2014

Dec. 31, 2014

USD ($)

CNY

Preferred A Shares

Preferred A Shares

Preferred B Shares

Preferred B Shares

Preferred C Shares

Preferred C Shares

Preferred D Shares

Preferred D Shares

Class A ordinary shares

Class A ordinary shares

Class B ordinary shares

Class B ordinary shares

Initial public offering

Initial public offering

Initial public offering

Initial public offering

Private Placement

Private Placement

Private Placement

Private Placement

item

item

CNY

DCM Hybrid RMB Fund, L.P.

Qihoo 360 Technology Co. Ltd.

Ctrip

CNY

Class A ordinary shares

Class A ordinary shares

Ctrip

Class A ordinary shares

Class A ordinary shares

Class A ordinary shares

USD ($)

CNY

Class A ordinary shares

USD ($)

Class of Stock

Number of voting rights to holders of each share of common stock

1

10

Conversion ratio for convertible preferred shares

1

Ordinary shares, shares issued

188,435,922

188,435,922

26,000,000

82,487,876

105,948,046

5,000,000

1,666,666

5,000,000

Issuance of ordinary shares,net of issuance costs (in shares)

36,812,868

36,812,868

3,731,034

Proceeds from the private placement, net of issuance cost

$145,954,527

905,589,458

$148,000,000

905,792,199

$15,000,000

Issuance costs

22,731,781

14,279,026

14,279,026

Common stock, shares authorized

126,999,531

780,000,000

Preferred shares, shares authorized

0

20,000,000

0

21,564,115

0

25,782,056

0

21,771,472

Sharebased_Compensation_Expens2

Share-based Compensation Expenses (Details)

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

15-May-14

15-May-14

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2012

Dec. 31, 2014

Oct. 08, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Oct. 08, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Oct. 08, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

USD ($)

CNY

Minimum

Minimum

Minimum

Minimum

Maximum

Maximum

Maximum

Maximum

Stock options

Stock options

Employees share options

Employees share options

Restricted shares

Restricted shares

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2008 Plan

2014 Plan

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

CNY

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

Stock options

item

USD ($)

CNY

CNY

CNY

USD ($)

Minimum

Minimum

Minimum

Minimum

Maximum

Maximum

Maximum

Maximum

Share-based Compensation Expenses

Maximum number of shares to be granted

11,500,000

Additional number of shares available for issuance under the plan

18,375,140

Contractual term

6 years

10 years

Vesting period

4 years

6 years

10 years

4 years

Vesting percentage which vest upon first anniversary of the date of grant

25.00%

Number of equal monthly installments for remaining vest

36

Terminate period prior to the occurrence of an exercisable event

3 months

Share-based compensation expense recognized if an exercisable event ocurred

39,172,678

Threshold percentage of ordinary shares reserved under the Plan falls below the total then-issued and outstanding ordinary shares, then automatically increases the number of ordinary shares reserved for future issuances

1.00%

Increase percent in ordinary shares reserved for future issuances to total outstanding shares

5.00%

Incremental compensation expense

275,505

1,698,213

Unrecognized compensation expense

23,356,607

144,918,404

Unrecognized compensation expense other than options

590,963

3,666,690

Recognition period for unrecognized compensation cost

3 years 6 months 7 days

3 years 6 months 7 days

3 years 4 months 6 days

Number of Options

Outstanding as of beginning of the period (in shares)

17,631,953

17,631,953

Granted (in shares)

576,000

576,000

2,159,812

6,477,000

6,477,000

Exercised (in shares)

-2,332,851

-2,332,851

Forfeited (in shares)

-510,256

-510,256

Outstanding as of end of the period (in shares)

21,265,846

21,265,846

Vested and expected to vest at end of the period (in shares)

20,614,680

20,614,680

Exercisable at the end of the period (in shares)

10,127,642

10,127,642

Weighted Average Exercise Price

Outstanding as of beginning of the period (in dollars or RMB per share)

$0.37

Granted (in dollars per share)

$5

$3.08

Exercised (in dollars per share)

$0.24

Forfeited (in dollars per share)

$2.16

Outstanding as of end of the period (in dollars per share)

$1.17

Vested and expected to vest at end of the period (in dollars per share)

$1.15

Exercisable at the end of the period (in dollars per shares)

$0.31

Weighted Average Remaining Contractual Life

Outstanding as of end of the period

4 years 10 months 17 days

4 years 10 months 17 days

3 years 8 months 1 day

Vested and expected to vest at end of the period

4 years 9 months 26 days

4 years 9 months 26 days

Exercisable at the end of the period

2 years 8 months 1 day

2 years 8 months 1 day

Aggregate Intrinsic Value

Outstanding as of end of the period

60,164,810

28,284,725

Vested and expected to vest at end of the period

58,822,488

Exercisable at the end of the period (in shares)

37,387,103

37,387,103

Weighted Average Grant Date Fair Value

Outstanding as of beginning of the period (in dollars or RMB per share)

$0.49

Granted (in dollars per share)

$3

$3.57

Exercised (in dollars per share)

$0.13

Forfeited (in dollars per share)

$1.49

Outstanding as of end of the period (in dollars per share)

$1.44

Vested and expected to vest at end of the period (in dollars or RMB per share)

$1.41

Exercisable at the end of the period (in dollars per shares)

$0.38

Total intrinsic value of options exercised

10,974,710

68,093,688

0

0

Total fair value of share options vested

$3,843,803

23,849,260

8,340,955

5,507,749

Assumptions used to estimate the fair value of option grant on the date of grant

Expected volatility (as a percent)

55.00%

50.00%

50.00%

51.10%

52.00%

Risk-free interest rate (per annum) (as a percent)

1.52%

1.99%

1.08%

2.60%

1.75%

Exercise multiple

2.2

2.2

2.2

2.8

2.8

2.8

Expected dividend yield

0.00%

0.00%

0.00%

0.00%

Expected term (in years)

6 years

6 years

6 years

10 years

Expected forfeiture rate (post-vesting) (as a percent)

0.00%

0.00%

0.00%

20.00%

20.00%

20.00%

Fair value of the common share on the date of option grant

$0.76

4.78

$3.33

20.66

$0.91

5.63

$6.98

43.31

$1.98

12.26

Summary of restricted shares activity

Grant (in shares)

210,000

Exercise (in shares)

-30,618

Outstanding balance at the end of the period (in shares)

179,382

Vested and expected to vest at end of the period

179,382

Weighted-Average Grant-Date Fair value

Grant (in dollars per share)

$3.36

Exercise (in dollars per share)

$3.36

Outstanding at the end of the period (in dollars per share)

$3.36

Vested and expected to vest at end of the period (in dollars per share)

$3.36

Loss_Per_Share_Details

Loss Per Share (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY	Preferred A Shares	Preferred D Shares	Preferred D Shares	Parent Company	Parent Company	Parent Company	Parent Company
					CNY	USD ($)	CNY	USD ($)	CNY	CNY	CNY
Numerator:
Net loss	($72,181,581)	-447,857,851	-79,632,079	-107,189,923				($72,181,581)	-447,857,851	-79,632,079	-107,189,923
Deemed dividends upon redesignation/modification	-2,515,216	-15,605,908	-59,428,400		-59,428,400	-2,515,216	-15,605,908	-2,515,216	-15,605,908	-59,428,400
Net loss attributable to ordinary shareholders	($74,696,797)	-463,463,759	-139,060,479	-107,189,923				($74,696,797)	-463,463,759	-139,060,479	-107,189,923
Denominator:
Weighted average number of ordinary shares outstanding - basic and diluted (in shares)	105,746,313	105,746,313	26,000,000	26,000,000
Basic and diluted net loss per share attributable to the Company's ordinary shareholders (in dollars per share)	($0.71)	-4.38	-5.35	-4.12

Loss_Per_Share_Details_2

Loss Per Share (Details 2)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)	21,445,228	100,256,344	93,212,162
Options and restricted shares
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)	21,445,228	17,631,953	10,587,771
Preferred A Shares
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)		13,506,748	13,506,748
Preferred B Shares
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)		21,564,115	21,564,115
Preferred C Shares
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)		25,782,056	25,782,056
Preferred D Shares
Anti-dilutive securities
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)		21,771,472	21,771,472

Restricted_Net_Assets_Details

Restricted Net Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Restricted Net Assets
Percentage of after-tax profit required to be appropriated to general reserve	10.00%
General reserve as a percentage of registered capital up to which after-tax profit of PRC subsidiaries and VIE's shall be transferred	50.00%
Amount of restricted net assets of the Group's PRC subsidiaries and the Affiliated PRC Entities	$721,000,000
Percentage on total consolidated net assets	51.00%

Commitments_and_Contingencies_1

Commitments and Contingencies (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
	CNY	CNY	CNY	USD ($)
Commitments and Contingencies.
Rental expenses	15,969,051	12,582,318	13,815,974
Capital commitments	1,438,502
Minimum lease payments
2015	22,501,858			3,626,641
2016	21,450,605			3,457,210
2017	18,894,220			3,045,196
2018	13,235,800			2,133,224
2019	13,162,292			2,121,376
Thereafter	19,611,943			3,160,871
Total	108,856,718			$17,544,518

Related_Party_Transactions_and1

Related Party Transactions and Balances	12 Months Ended		0 Months Ended		1 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 15, 2014	Dec. 15, 2014	Dec. 31, 2014
	USD ($)	CNY	Class A ordinary shares	Class A ordinary shares	Ctrip
			Private Placement	Private Placement	Class A ordinary shares
			USD ($)	CNY	Private Placement
					USD ($)
					director
Related Party Transaction [Line Items]
Number of directors					1
Number of shares issued			36,812,868	36,812,868	3,731,034
Total proceeds from the private placement	$145,954,527	905,589,458	$148,000,000	905,792,199	$15,000,000

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent events, CNY)	0 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Apr. 01, 2015	Mar. 31, 2015
		item
Subsequent events
Subsequent events
Number of travel agencies acquired		2
Cash consideration payable	56

Condensed_Financial_Informatio1

Condensed Financial Information of the Parent Company (Details)	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014
	USD ($)	CNY	USD ($)	CNY	CNY	CNY	Board of Directors Chairman	Preferred A Shares	Preferred A Shares	Preferred B Shares	Preferred B Shares	Preferred C Shares	Preferred C Shares	Preferred D Shares	Preferred D Shares	Class A ordinary shares	Class B ordinary shares	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company	Parent Company
									CNY		CNY		CNY		CNY			USD ($)	CNY	USD ($)	CNY	CNY	CNY	Board of Directors Chairman	Preferred A Shares	Preferred A Shares	Preferred A Shares	Preferred B Shares	Preferred B Shares	Preferred B Shares	Preferred C Shares	Preferred C Shares	Preferred C Shares	Preferred D Shares	Preferred D Shares	Preferred D Shares	Class A ordinary shares	Class B ordinary shares
																									USD ($)	USD ($)	CNY	USD ($)	USD ($)	CNY	USD ($)	USD ($)	CNY	USD ($)	USD ($)	CNY
Current assets:
Cash and cash equivalents	$234,942,200	1,457,722,376	$67,595,467	419,402,835	299,237,536	332,100,808												$213,273,969	1,323,279,666	$48,669,780	301,976,515	97,519,531	247,505,259
Amounts due from subsidiaries																		2,901,069	17,999,974		17,860,046
Prepayments and other current assets	92,721,031	575,296,906		286,560,247														251,597	1,561,058		1,247,811
Total current assets	411,672,592	2,554,263,763		1,043,864,169														216,426,635	1,342,840,698		321,084,372
Other non-current assets	2,972,517	18,443,279		6,657,304																	2,127,187
Total assets	426,299,412	2,645,017,332		1,075,372,776														216,426,635	1,342,840,698		323,211,559
Current liabilities (including current liabilities of the Affiliated Entities without recourse to the Company amounting to RMB753,432,666 and RMB1,168,077,588 (US$188,259,934), as of December 31, 2013 and December 2014, respectively):
Accrued expenses and other current liabilities	17,706,237	109,860,116		29,732,090														2,695,184	16,722,535		4,722,120
Total current liabilities	195,663,804	1,214,015,635		764,147,046														2,695,184	16,722,535		4,722,120
Non-current liabilities:
Investments (deficit) in subsidiaries and affiliated entities																		-13,313,518	-82,605,055		27,133,711
Total non-current liabilities	3,590,639	22,278,479		19,870,002														-13,313,518	-82,605,055		27,133,711
Total liabilities	199,254,443	1,236,294,114		784,017,048														-10,618,334	-65,882,520		31,855,831
Commitments and contingencies (Note 13)
Mezzanine equity:
Total mezzanine equity				716,441,243					9,360,443		48,890,116		290,255,691		367,934,993						716,441,243						9,360,443			48,890,116			290,255,691			367,934,993
Convertible preferred shares, par value (in dollars per share)																									$0.00	$0.00		$0.00	$0.00		$0.00	$0.00		$0.00	$0.00
Convertible preferred shares, shares authorized								0	20,000,000	0	21,564,115	0	25,782,056	0	21,771,472										0	20,000,000	20,000,000	0	21,564,115	21,564,115	0	25,782,056	25,782,056	0	21,771,472	21,771,472
Convertible preferred shares, shares issued	0	0						0	13,506,748	0	21,564,115	0	25,782,056	0	21,771,472										0	13,506,748	13,506,748	0	21,564,115	21,564,115	0	25,782,056	25,782,056		21,771,472	21,771,472
Convertible preferred shares, shares outstanding								0	13,506,748	0	21,564,115	0	25,782,056	0	21,771,472										0	13,506,748	13,506,748	0	21,564,115	21,564,115	0	25,782,056	25,782,056	0	21,771,472	21,771,472
Shareholders' equity/(deficit)
Ordinary shares (US$0.0001 par value; 126,999,531 shares authorized and 26,000,000 shares issued and outstanding as of December 31, 2013; 1,000,000,000 shares (including 780,000,000 Class A shares, 120,000,000 Class B shares and 100,000,000 shares to be designated by the Board of Directors) authorized and 188,435,922 shares (including 82,487,876 Class A shares and 105,948,046 Class B shares) issued and outstanding as of December 31, 2014)	19,513	121,068		17,757														19,513	121,068		17,757
Ordinary shares, par value (in dollars per share)																		$0.00		$0.00
Ordinary shares, shares authorized			126,999,531	126,999,531			100,000,000									780,000,000		1,000,000,000	1,000,000,000	126,999,531	126,999,531			100,000,000													780,000,000	120,000,000
Ordinary shares, shares issued	188,435,922	188,435,922	26,000,000	26,000,000												82,487,876	105,948,046	188,435,922	188,435,922	26,000,000	26,000,000																82,487,876	105,948,046
Ordinary shares, shares outstanding	188,435,922	188,435,922	26,000,000	26,000,000														26,000,000	26,000,000																			188,435,922
Additional paid-in capital	370,487,483	2,298,726,639		200,000														370,487,483	2,298,726,639		200,000
Accumulated other comprehensive loss	-3,397,597	-21,080,728		-19,723,270														-3,397,597	-21,080,728		-19,723,270
Accumulated deficit	-140,064,430	-869,043,761		-405,580,002														-140,064,430	-869,043,761		-405,580,002
Total shareholder's equity/(deficit)	227,044,969	1,408,723,218		-425,085,515	-281,167,619	-173,915,375												227,044,969	1,408,723,218		-425,085,515
Total liabilities, mezzanine equity and shareholders' equity/ (deficit)	$426,299,412	2,645,017,332		1,075,372,776														$216,426,635	1,342,840,698		323,211,559

Condensed_Financial_Informatio2

Condensed Financial Information of the Parent Company (Details 2)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY	Parent Company	Parent Company	Parent Company	Parent Company
					USD ($)	CNY	CNY	CNY
STATEMENTS OF COMPREHENSIVE LOSS
Revenues	$569,728,780	3,534,939,179	1,949,687,414	1,112,880,580
Cost of revenues	-533,281,887	-3,308,800,795	-1,829,665,386	-1,073,731,629
Gross profit	36,446,893	226,138,384	120,022,028	39,148,951
Operating expenses:
Research and product development	-16,903,835	-104,881,535	-38,994,362	-33,369,749
Sales and marketing	-69,978,901	-434,191,090	-110,070,612	-57,993,819
General and administrative	-26,913,523	-166,987,647	-69,678,933	-62,005,515	-905,371	-5,617,466	-4,026,494	-2,090,100
Share of loss of subsidiaries and affiliated entities					-71,907,771	-446,158,957	-77,414,051	-108,975,736
Other operating income	1,112,370	6,901,814	1,688,560	773,727	66,928	415,259
Total operating expenses	-112,683,889	-699,158,458	-217,055,347	-152,595,356	-72,746,214	-451,361,164	-81,440,545	-111,065,836
Loss from operations	-76,236,996	-473,020,074	-97,033,319	-113,446,405	-72,746,214	-451,361,164	-81,440,545	-111,065,836
Other income/(expense)
Interest income	5,042,000	31,283,593	16,163,339	7,431,724	1,066,730	6,618,634	1,737,572	4,356,806
Foreign exchange related gains / (losses), net	-859,627	-5,333,644	1,286,468	-740,678	-502,097	-3,115,321	70,894	-480,893
Other income, net	-126,958	-787,726	-48,567	-356,674
Loss before income tax expense	-72,181,581	-447,857,851	-79,632,079	-107,112,033	-72,181,581	-447,857,851	-79,632,079	-107,189,923
Income tax expense				-77,890
Net loss	-72,181,581	-447,857,851	-79,632,079	-107,189,923	-72,181,581	-447,857,851	-79,632,079	-107,189,923
Deemed dividends to preferred shareholders	-2,515,216	-15,605,908	-59,428,400		-2,515,216	-15,605,908	-59,428,400
Net loss attributable to ordinary shareholders	-74,696,797	-463,463,759	-139,060,479	-107,189,923	-74,696,797	-463,463,759	-139,060,479	-107,189,923
Other comprehensive loss:
Foreign currency translation adjustment, net of nil tax	-218,783	-1,357,458	-4,857,417	-62,321	-218,783	-1,357,458	-5,331,216	-237,281
Comprehensive loss	($72,400,364)	-449,215,309	-84,489,496	-107,252,244	($72,400,364)	-449,215,309	-84,963,295	-107,427,204

Condensed_Financial_Informatio3

Condensed Financial Information of the Parent Company (Details 3)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	CNY	CNY	CNY	Parent Company	Parent Company	Parent Company	Parent Company
					USD ($)	CNY	CNY	CNY
STATEMENTS OF CASH FLOWS
Cash flows used in operating activities	($43,693,582)	-271,101,198	116,736,250	14,663,258	$424,908	2,636,388	-3,057,858	-489,138
Cash flows used in investing activities	-36,734,567	-227,923,296	-304,217,892	-46,785,852	-83,597,640	-518,689,918	-93,595,112	-148,778,745
Cash flows from financing activities					248,266,876	1,540,396,658	306,360,473
Effect of exchange rate changes on cash	-491,994	-3,052,623	1,286,468	-740,678	-489,955	-3,039,977	-5,250,519	-717,845
Net increase/(decrease) in cash and cash equivalents	167,346,733	1,038,319,541	120,165,299	-32,863,272	164,604,189	1,021,303,151	204,456,984	-149,985,728
Cash and cash equivalents at the beginning of year	67,595,467	419,402,835	299,237,536	332,100,808	48,669,780	301,976,515	97,519,531	247,505,259
Cash and cash equivalents at the end of year	234,942,200	1,457,722,376	419,402,835	299,237,536	213,273,969	1,323,279,666	301,976,515	97,519,531
Supplemental disclosure of non-cash investing and financing activities
Deemed dividends to preferred shareholders	2,515,216	15,605,908	59,428,400		2,515,216	15,605,908	59,428,400
Accrued issuance cost related to private placement	2,268,685	14,076,285			2,268,685	14,076,285
Accrual related to deferred initial public offering costs			2,127,187				2,127,187
Receivables related to exercise of stock options	($164,354)	-1,019,748			($164,354)	-1,019,748