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LOANS AND BORROWINGS - Long-term borrowings secured (Details) - CNY (¥) ¥ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loans and Borrowings |  |
Assets to secure long-term loans and borrowings | ¥ 4,939,011 | ¥ 3,743,751
Weighted average interest rates of long-term borrowings | 6.73% | 7.40%
Accounts receivable |  |
Loans and Borrowings |  |
Assets to secure long-term loans and borrowings | ¥ 743,031 | ¥ 508,847
Property and equipment, net |  |
Loans and Borrowings |  |
Assets to secure long-term loans and borrowings | 2,918,670 | 2,493,872
Prepaid land use rights, net |  |
Loans and Borrowings |  |
Assets to secure long-term loans and borrowings | 678,190 | ¥ 741,032
Operating lease ROU assets |  |
Loans and Borrowings |  |
Assets to secure long-term loans and borrowings | ¥ 599,120 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Weighted average interest rate of long-term debt outstanding calculated at point in time. + References No definition available. + Details
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