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INCOME TAX EXPENSE (Tables)
12 Months Ended
Dec. 31, 2022
Income Tax Expense  
Schedule of current and deferred components of income tax expense
                 
   Year Ended December 31, 
   2020   2021   2022   2022 
   CNY   CNY   CNY   US$ 
                 
Current income tax (benefit)/expense   (4,436)   2,294    3,066    445 
Deferred income tax expense/(benefit)   5,694    (159)   2,798    405 
                     
Total   1,258    2,135    5,864    850 
Schedule of Profit/(loss) before income tax
                 
   Year Ended December 31, 
   2020   2021   2022   2022 
   CNY   CNY   CNY   US$ 
                 
PRC   (1,214)   (4,669)   6,406    929 
BVI   25,442    (48,106)   (22,776)   (3,303)
Hong Kong   (49)   (61)   (62)   (9)
                     
Total profit/(loss) before income tax for the year   24,179    (52,836)   (16,432)   (2,383)
Schedule of reconciliation of the income tax expenses
                 
   Year Ended December 31, 
   2020   2021   2022   2022 
   CNY   CNY   CNY   US$ 
                 
Profit/(loss) before income tax for the year   24,179    (52,836)   (16,432)   (2,383)
Tax at the statutory tax rate   25%   25%   25%   25%
Computed income tax expense/(benefit)   6,045    (13,209)   (4,108)   (596)
Effect of different tax rates of the Company and certain subsidiaries   (1,186)   6,937    5,699    826 
Tax losses with no deferred tax assets recognized   1,067    1,770    420    61 
Non-deductible expenses   196    122    983    143 
Statutory income   (903)         (201)   (29)
Deductible temporary differences with no deferred tax assets recognized               971    141 
Utilization of previously unrecognized deductible temporary differences and tax losses   (50)   (150)   (1,774)   (257)
Write-off of unrecoverable deferred tax assets previously recognized         2,987    2,272    329 
Preferential tax rate   2,038    2,215    14    2 
Current and deferred tax rate differences   (488)                  
Others   (5,461)*   1,463    1,588    230 
                     
Income tax expense   1,258    2,135    5,864    850 
Schedule of provision for uncertain tax position
             
   Year Ended December 31, 
   2021   2022   2022 
   CNY   CNY   US$ 
             
 As of January 1   8,378    8,378    1,215 
 Additions based on tax positions         630    91 
                
As of December 31   8,378    9,008    1,306