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CASH AND CASH EQUIVALENTS (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Cash and cash equivalents            
- Cash on hand ¥ 2   ¥ 71    
- Cash at bank 671 4,751   31,154    
Short-term deposits   470    
Total Cash and cash equivalent $ 671 ¥ 4,753 $ 4,478 ¥ 31,695 ¥ 58,359 ¥ 56,580