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CONTRACT ASSETS (Details 1)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Contract assets [abstract]      
Beginning of the year $ 81 ¥ 562 ¥ 205
Provision for expected credit loss, net 25 171 357
End of the year $ 106 ¥ 733 ¥ 562