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EMPLOYEE DEFINED CONTRIBUTION PLAN (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
PRC        
EMPLOYEE DEFINED CONTRIBUTION PLAN        
Contributions to defined contribution plans ¥ 45,808 $ 6,276 ¥ 57,182 ¥ 58,623