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LEASE ( Schedule of non-cancellable operating lease payment) (Details) - Dec. 31, 2021
¥ in Thousands, $ in Thousands
CNY (¥)
USD ($)
LEASE    
2022 ¥ 2,396 $ 376
2023 1,996 313
2024 1,796 282
2025 96 15
2026 96 15
Above 5 years ¥ 112 $ 18