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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

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