Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Common Shares - Additional Information (Details)

v3.23.1
Common Shares - Additional Information (Details)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Apr. 10, 2020
CNY (¥)
Apr. 10, 2020
USD ($)
Dec. 24, 2019
USD ($)
shares
May 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2021
shares
Dec. 31, 2020
CNY (¥)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Common shares                  
Total cash consideration | ¥           ¥ 4,003,530      
ADS                  
Common shares                  
Authorized amount to repurchase (in dollars) | $       $ 1.0          
Repurchase of common share       450,337          
Average stock price | $ / shares       $ 1.2631          
Total cash consideration           ¥ 4,000,000 $ 0.6    
Shares used for settlement of vested share options and restricted shares vesting         1,080,549 957,186 957,186    
Private Placement                  
Common shares                  
Issuance of common shares upon private placement (in shares)     5,662,634            
Proceeds from issuance of common stock ¥ 8,500,000 $ 1.2 $ 10.0         ¥ 61,700,000 $ 8.8