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

COMMON SHARES (Details)

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COMMON SHARES (Details)
$ / shares in Units, ¥ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Apr. 10, 2020
USD ($)
Apr. 10, 2020
CNY (¥)
Dec. 24, 2019
USD ($)
shares
May 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2023
shares
Dec. 31, 2022
shares
Dec. 31, 2020
USD ($)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
CNY (¥)
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             $ 0.6 ¥ 4.0    
Shares used for settlement of vested share options and restricted shares vesting         1,124,626 1,080,549        
Private Placement                    
Common shares                    
Issuance of common shares upon private placement (in shares)     5,662,634              
Proceeds from issuance of common stock $ 1.2 ¥ 8.5 $ 10.0           $ 8.8 ¥ 61.7