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EMPLOYEE DEFINED CONTRIBUTION PLAN (Details)
¥ in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
PRC        
EMPLOYEE DEFINED CONTRIBUTION PLAN        
Contributions to defined contribution plans ¥ 58,623 $ 8,500 ¥ 51,107 ¥ 28,228
Singapore        
EMPLOYEE DEFINED CONTRIBUTION PLAN        
Contributions to defined contribution plans ¥ 0   ¥ 0 ¥ 106