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CONSOLIDATED STATEMENTS OF CASH FLOWS
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Cash flows from operating activities:        
Net loss ¥ (108,450) $ (15,724) ¥ (140,584) ¥ (225,075)
Adjustments to reconcile net loss to net cash used in operating activities:        
Depreciation of property and equipment 24,362 3,532 27,337 37,704
Amortization of intangible assets 6,043 876 4,481 4,366
Lease expense to reduce right-of-use assets 9,002 1,305    
Unrealized exchange gain (90)
Deferred tax benefits (481) (70)    
Allowance for doubtful accounts 2,895 420 (246) 18,732
Interest expenses, net 807 117 2,857 7,931
Impairment of long-term investments 6,726 975 25,370 38,739
Impairment of property and equipment 22,400 3,248   10,952
Impairment of amount due from related companies       479
Impairment of loans 705 102 528 4,500
Loss/ (gain) on disposal of property and equipment 14 2 (821) 23
Change in fair value of structured deposits (59) (9) (20) (1,233)
Change in fair value of foreign currency swap contract (838) (121) (6,060)  
Share-based compensation expenses 15,515 2,249 30,212 28,858
Changes in operating assets and liabilities,        
Accounts and notes receivable 12,528 1,816 1,271 71,799
Prepayments and other current assets 17,447 2,531 13,572 43,281
Amounts due from related parties (220) (32) (35) 43
Derivative assets 7,214 1,046    
Operating lease right-of-use assets (26,214) (3,801)    
Other non-current assets 133 19 370 11
Accounts payable (1,064) (154) 1,699 (3,403)
Deferred revenue and customer deposits 12,023 1,743 8,605 29,520
Tax payable (371) (54) (81) (115)
Accrued interest related to convertible notes     (21,049)  
Accrued liabilities and other current liabilities (25,797) (3,738) (25,596) 8,908
Amounts due to related parties (54) (8) 54 (56)
Operating lease liabilities 5,941 861    
Other non-current liabilities 2,317 336 1,486 (64)
Net cash provided by /(used in) operating activities (17,476) (2,533) (76,650) 75,810
Cash flows from investing activities:        
Purchase of short-term investments (41,000) (5,944)   (470,169)
Proceeds from maturities of short-term investments 71,000 10,294 50,000 391,964
Purchase of long-term investments (2,690) (390)   (36,012)
Payment for acquisitions, net of cash acquired 58 8    
Proceed from disposal of long-term investments 585 85    
Investment in loans granted to other companies (1,000) (145) (2,000) (8,000)
Proceed from maturities of loans granted to other companies 1,000 145    
Investment in convertible loans     (4,859)  
Purchase of property and equipment (632) (92) (16,291) (19,685)
Proceeds from disposal of property and equipment 24 3 2,238 133
Purchase of intangible assets (492) (71) (2,646) (2,646)
Net cash (used in) /provided by investing activities 26,853 3,893 26,442 (144,415)
Cash flows from financing activities:        
Proceeds from short-term bank loans 43,000 6,234 150,000  
Repayment of short-term bank loans (188,000) (27,257)    
Proceeds from issuance of common shares 1   1  
Repurchase of ordinary shares (1,689) (245)    
Prepayment for stock issuance cost (1,525) (221)    
Repayment of convertible notes     (207,459)  
Proceeds from exercise of share options 173 25 2,938 315
Net cash provided by /(used in) financing activities (148,040) (21,464) (54,520) 315
Effect of exchange rate on cash and cash equivalents and restricted cash 341 49 3,080 (7,054)
Net (decrease)/ increase in cash and cash equivalents and restricted cash (138,322) (20,055) (101,648) (75,344)
Cash and cash equivalents and restricted cash at the beginning of year 254,582 36,911 356,230 431,574
Cash and cash equivalents at the beginning of the year 90,552 13,129 356,115 431,459
Restricted cash at the beginning of the year 164,030 23,782 115 115
Cash and cash equivalents and restricted cash at the end of year 116,260 16,856 254,582 356,230
Cash and cash equivalents at the end of the year 116,128 16,837 90,552 356,115
Restricted cash at the end of the year 132 19 164,030 115
Supplemental disclosures of cash flow information:        
Income tax paid 296 43 182 195
Interest expense paid 2,434 353 4,513  
Non-cash investing and financing activities:        
Unpaid cash consideration for business combination (Note 12) ¥ 16,788 $ 2,434    
Acquisition of long-term investments       8,000
Purchase of property and equipment included in accrued liabilities and other current liabilities     ¥ 2,484 1,355
Purchase of intangible assets included in accrued liabilities and other current liabilities       ¥ 2,503