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LEASE (Lease receivables) (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2021
CNY (¥)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
CNY (¥)
Current      
Account receivable - Operating lease ¥ 13,318 $ 2,090 ¥ 38,266
Account receivable - Sales-type lease 1,010 158 1,195
Net investment in direct financing leases, current portion 2,699 424 25,045
Noncurrent      
Net investment in direct financing leases, non-current portion 4,796 753 13,720
Total ¥ 21,823 $ 3,425 ¥ 78,226