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TAXATION - Components of deferred taxes (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥)
--- | --- | --- | ---
Deferred tax asset |  |  |
Net operating loss | ¥ 540,787 | $ 74,088 | ¥ 425,390
Foreign exchange loss | 2,140 | 293 | 2,755
Depreciation and amortization | 16,212 | 2,221 | 17,647
Property, plant and equipment impairment | 1,914 | 262 | 2,340
Deposits for non-current assets | 17,725 | 2,428 | 17,725
Allowance for doubtful accounts | 51,153 | 7,008 | 29,299
Lease liabilities | 45,536 | 6,238 | 59,875
Other long-term assets | 94,563 | 12,955 | 94,791
Equity investment | 7,105 | 973 | 7,005
Others | 10,506 | 1,439 | 11,770
Total deferred tax assets | 787,641 | 107,905 | 668,597
less: Valuation allowance | (751,370) | (102,937) | (623,044)
Net deferred tax assets | 36,271 | 4,968 | 45,553
Deferred tax liabilities |  |  |
Equity investment | (999) | (137) | (1,091)
Property, plant and equipment | (16,110) | (2,207) | (2,368)
Disposal of Beijing Century Friendship | (3,126) | (428) | (3,126)
Intangible assets | (65,998) | (9,041) | (71,825)
Right-of-use assets | (32,497) | (4,452) | (45,626)
Capitalized interest | 0 | 0 | (18,993)
Others | (411) | (56) | (2,062)
Total deferred tax liabilities | (119,141) | (16,321) | (145,091)
Deferred tax assets, net | 0 | 0 | 0
Deferred tax liabilities, net | ¥ (82,870) | $ (11,353) | ¥ (99,538)

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