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CASH AND CASH EQUIVALENTS (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2024
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2021
CNY (¥)
Cash and cash equivalents            
- Cash on hand $ 1 ¥ 1   ¥ 2    
- Cash at bank 421 3,081   4,751    
Short-term deposits      
Total Cash and cash equivalent $ 422 ¥ 3,082 $ 671 ¥ 4,753 ¥ 31,695 ¥ 58,359