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TRADE RECEIVABLES (Details) ¥ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
--- | --- | --- | ---
Non-current |  |  |
Trade receivables from construction contracts |  |  | ¥ 13,128
Less: Impairment allowance |  |  | (2,608)
Total of Non-current trade receivables |  |  | 10,520
Current |  |  |
Trade receivables from service concession agreement |  |  | 22,927
Trade receivables from construction contracts |  |  | 34,850
Less: Impairment allowance |  |  | (11,017)
Total of current trade receivables |  |  | 46,760
Total |  |  | ¥ 57,280

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