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LEASE - Schedule of non-cancellable operating lease payment (Details) - Dec. 31, 2022
¥ in Thousands, $ in Thousands
CNY (¥)
USD ($)
LEASE    
2023 ¥ 1,796 $ 260
2024 1,796 260
2025 96 14
2026 96 14
2027 96 14
Above 5 years ¥ 16 $ 2