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

Common Shares - Additional Information (Details)

v3.21.1
Common Shares - Additional Information (Details)
 1 Months Ended 12 Months Ended
Apr. 10, 2020
CNY (¥)
Apr. 10, 2020
USD ($)
Dec. 24, 2019
CNY (¥)
shares
May 31, 2020
USD ($)
$ / shares
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 $ 613,568    
ADS                
Common shares                
Authorized amount to repurchase (in dollars) | $       $ 1,000,000        
Repurchase of common share       450,337        
Average stock price | $ / shares       $ 1.2631        
Total cash consideration         ¥ 4,000,000 $ 600,000    
Shares used for settlement of vested share options and restricted shares vesting         749,253 749,253    
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 $ 1,200,000 ¥ 10,000,000       ¥ 61,700,000 $ 8,800,000