| Cover | Apr. 19, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On April 20, 2022, Greencity Acquisition Corporation (“Greencity” or the Company”) filed a report on Form 8-K under Items 5.03, 5.07 and 7.01 to report that at an Extraordinary General Meeting of Shareholders held on April 18, 2022, its shareholders had approved an amendment to its Amended and Restated Memorandum and Articles of Association extending the term of the Company from April 28, 2022 to October 28, 2022. Pursuant to this Amendment No. 1 on Form 8-K/A to Form 8-K, dated April 20, 2022, Item 7.01 is hereby amended. |
| Document Period End Date | Apr. 19, 2022 |
| Entity File Number | 001-39404 |
| Entity Registrant Name | Greencity Acquisition Corporation |
| Entity Central Index Key | 0001768910 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 505 Eshan Road, Floor 6 |
| Entity Address, Address Line Two | Pudong New District |
| Entity Address, City or Town | Shanghai |
| Entity Address, Country | CN |
| Entity Address, Postal Zip Code | 200120 |
| City Area Code | 86 |
| Local Phone Number | 21-20257919 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one ordinary share. par value U.S. $0.0001 and one redeemable warrant to purchase one-half ordinary share |
| Trading Symbol | GRCYU |
| Security Exchange Name | NASDAQ |
| Ordinary Shares, par value U.S. $0.0001 | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary Shares, par value U.S. $0.0001 |
| Trading Symbol | GRCY |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable Warrants, each warrant exercisable for one half ordinary share |
| Trading Symbol | GRNVW |
| Security Exchange Name | NASDAQ |
