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INCOME TAX EXPENSE (Tables)
6 Months Ended
Jun. 30, 2023
Notes and other explanatory information [abstract]  
Schedule of deferred components of income tax expense
            
   Six months ended June 30, 
   2022   2023   2023 
   CNY   CNY   US$ 
   (Unaudited)   (Unaudited)   (Unaudited) 
             
Current income tax expense   1,548    1,837    254 
Deferred income tax benefit   (1,191)   (10)   (2)
                
Total   357    1,827    252