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

Common Shares - Additional Information (Details)

v3.20.1
Common Shares - Additional Information (Details) - Private Placement
¥ in Millions, $ in Millions
12 Months Ended
Apr. 10, 2020
CNY (¥)
Apr. 10, 2020
USD ($)
Dec. 24, 2019
CNY (¥)
shares
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Common shares          
Issuance of common shares upon private placement (in shares)     5,662,634    
Proceeds from issuance of common stock     ¥ 10.0 ¥ 61.7 $ 8.8
Subsequent Events          
Common shares          
Proceeds from issuance of common stock ¥ 8.5 $ 1.2