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CONSOLIDATED BALANCE SHEETS
¥ in Thousands, $ in Thousands
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Current assets:      
Cash and cash equivalents ¥ 90,552 $ 14,210 ¥ 356,115
Restricted cash 164,030 25,740 115
Derivative Asset, Current 5,989 940 100
Short-term investments 30,000 4,708 80,000
Accounts and notes receivable, net of allowances of RMB43,820 and RMB37,690 (US$5,914) as of December 31, 2020 and 2021, respectively 43,860 6,883 44,886
Prepayments and other current assets 46,670 7,323 49,013
Amounts due from related parties 35 5
Total current assets 381,136 59,809 530,229
Non-current assets:      
Property and equipment, net 62,179 9,757 73,522
Intangible assets, net 5,398 847 9,519
Long-term investments 141,926 22,271 168,526
Other non-current assets 4,898 769 5,631
Total non-current assets 214,401 33,644 257,198
Total assets 595,537 93,453 787,427
Current liabilities:      
Short-term loan 150,000 23,538  
Accounts payable (including accounts payable of the variable interest entity ("VIE") without recourse to the Company of RMB16,564 and RMB17,529 (US$2,751) as of December 31, 2020 and 2021, respectively) 18,292 2,870 16,592
Deferred revenue and customer deposits (including deferred revenue and customer deposits of the VIE without recourse to the Company of RMB104,681 and RMB115,900(US$18,187) as of December 31, 2020 and 2021, respectively) 119,991 18,829 109,182
Accrued liabilities and other current liabilities (including accrued liabilities and other current liabilities of the VIE without recourse to the Company of RMB66,772 and RMB64,527 (US$10,126) as of December 31, 2020 and 2021, respectively) 85,305 13,388 109,136
Amounts due to related parties (including amount due to related parties of the VIE without recourse to the Company of nil and RMB54 (US$8) as of December 31, 2020 and 2021, respectively) 54 8
Convertible notes     225,229
Total current liabilities 373,642 58,633 460,139
Non-current liabilities:      
Other non-current liabilities (including other non-current liabilities of the VIE without recourse to the Company of nil and RMB560 (US$88) as of December 31, 2020 and 2021, respectively) 2,607 409  
Deferred revenue (including non-current deferred revenue of the VIE without recourse to the Company of RMB561 and RMB569 (US$89) as of December 31, 2020 and 2021, respectively) 3,845 603 6,049
Total non-current liabilities 6,452 1,012 6,049
Total liabilities 380,094 59,645 466,188
Commitments and contingencies    
Shareholders' equity      
Additional paid-in capital 1,021,961 160,368 988,812
Accumulated deficit (819,018) (128,522) (678,434)
Accumulated other comprehensive income 12,451 1,954 10,813
Total shareholders' equity 215,443 33,808 321,239
Total liabilities and shareholders' equity 595,537 93,453 787,427
Class A Common Shares      
Shareholders' equity      
Common shares 38 6 37
Class B Common Shares      
Shareholders' equity      
Common shares ¥ 11 $ 2 ¥ 11