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LEASE (Schedule of future lease payments) (Details) - Dec. 31, 2021
¥ in Thousands, $ in Thousands
CNY (¥)
USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
2022 ¥ 35,074 $ 5,504
2023 26,291 4,126
2024 22,708 3,563
2025 23,057 3,618
2026 22,891 3,592
Thereafter 210,849 33,087
Total future lease payments 340,870 53,491
Less: Imputed interest 106,161 16,660
Total lease liability balance ¥ 234,709 $ 36,831