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UNAUDITED INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)
¥ in Thousands, $ in Thousands
Jun. 30, 2021
CNY (¥)
shares
Jun. 30, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
CNY (¥)
shares
Dec. 31, 2020
$ / shares
Allowance For Doubtful Accounts And Financing Receivable Current ¥ 39,420 $ 6,105 ¥ 43,820  
Accounts payable 13,659 2,116 16,592  
Deferred revenue and customer deposits 70,166 10,867 71,141  
Accrued liabilities and other current liabilities 90,573 14,027 ¥ 109,136  
Other non-current liabilities ¥ 2,554 $ 396    
Class A Common Shares        
Common shares, par value per share | $ / shares   $ 0.0001   $ 0.0001
Common shares, shares authorized 4,920,000,000 4,920,000,000 4,920,000,000  
Common shares, shares issued 61,882,851 61,882,851 61,392,170  
Common shares, shares outstanding 61,882,851 61,882,851 61,392,170  
Class B Common Shares        
Common shares, par value per share | $ / shares   $ 0.0001   $ 0.0001
Common shares, shares authorized 30,000,000 30,000,000 30,000,000  
Common shares, shares issued 17,000,189 17,000,189 17,000,189  
Common shares, shares outstanding 17,000,189 17,000,189 17,000,189  
VIE        
Accounts payable ¥ 13,268 $ 2,055 ¥ 16,564  
Deferred revenue and customer deposits 102,198 15,828 104,681  
Accrued liabilities and other current liabilities 64,150 9,936 66,772  
Other non-current liabilities ¥ 693 $ 107 ¥ 0