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PROFIT/(LOSS) BEFORE INCOME TAX (Schedule of Group's Loss Before Tax from Continuing Operations) (Details) ¥ in Thousands, $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2023 CNY (¥) | Jun. 30, 2022 CNY (¥)
Crediting: |  |  |
Finance income (Note 5) | $ (1,117) | ¥ (8,101) | ¥ (9,376)
Charging: |  |  |
- Construction service | 334 | 2,423 | 5,107
Operation and maintenance services | 35 | 256 |
- Operation services related to service concession arrangement | ¥ |  | 2,697 | 3,664
Operation services related to service concession arrangement | $ | 372 |  |
Total | 741 | 5,376 | 8,771
Depreciation |  |  |
- Property, plant and equipment | 14 | 106 | 141
- Right-of-use assets | 98 | 713 | 707
Amortization of intangible assets | 54 | 395 | 404
Expense relating to short-term leases | 29 | 209 | 174
Impairment losses/(reversal) on financial assets: |  |  |
- Trade receivables | 53 | 388 | 1,936
- Contract assets | 489 | 3,546 | (41)
- Other receivables | 942 | 6,829 | 1,077
Fair value (gain)/loss on financial instruments: |  |  |
- Derivative financial liabilities (Note 16(b)) | 12 | 86 | (559)
Other income | (89) | (642) | (731)
Finance costs (Note 5) | $ 266 | ¥ 1,930 | ¥ 1,822

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