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LEASE (Narrative) (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2021 USD ($)
Lessor, Lease, Description [Line Items] |  |  |  |  |
Lease receivables | ¥ 2,637 |  | ¥ 5,018 |  | $ 414
Lease receivables pledged as collaterals for bank and other borrowings | 10,056 |  | 26,782 |  | 1,578
Derecognition of underlying assets | 58,058 | $ 9,111 | 179,093 |  |
Short-term Lease, Cost | 399 | 63 |  |  |
Secured Debt, Other | 405,117 |  | 414,470 |  | 63,572
Prepaid land lease amortization expenses | 416,896 | 65,420 | 426,517 |  |
Right-of-use asset amortization expenses | 9,621 | 1,510 | 9,513 | ¥ 9,462 |
Failed sale-leaseback transactions as seller-lessee |  |  |  |  |
Sale leaseback liability current | ¥ 66,789 |  |  |  | $ 10,481
Effective interest rate | 4.50% |  |  |  | 4.50%
Interest expenses | ¥ 39,876 | 6,257 | ¥ 44,880 | ¥ 21,644 |
Sale leaseback liability non current | 344,443 |  |  |  | $ 54,051
Cost of revenue [Member] |  |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |  |
Short-term Lease, Cost | 19,148 | 3,005 |  |  |
General and Administrative Expense [Member] |  |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |  |
Short-term Lease, Cost | ¥ 12,382 | $ 1,943 |  |  |
Minimum |  |  |  |  |
Failed sale-leaseback transactions as seller-lessee |  |  |  |  |
Effective interest rate | 3.43% |  |  |  | 3.43%
Maximum |  |  |  |  |
Failed sale-leaseback transactions as seller-lessee |  |  |  |  |
Effective interest rate | 11.69% |  |  |  | 11.69%

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