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TAXATION - Components of deferred taxes (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2025 CNY (¥) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 CNY (¥)
--- | --- | --- | ---
Deferred tax asset |  |  |
Net operating loss | ¥ 591,962 | $ 84,649 | ¥ 540,787
Foreign exchange loss | 3,813 | 545 | 2,140
Depreciation and amortization | 18,837 | 2,694 | 16,212
Property, plant and equipment impairment | 2,253 | 322 | 1,914
Deposits for non-current assets | 17,725 | 2,535 | 17,725
Allowance for doubtful accounts | 49,297 | 7,049 | 51,153
Lease liabilities | 41,640 | 5,954 | 45,536
Other long-term assets | 97,812 | 13,987 | 94,563
Equity investment | 7,130 | 1,020 | 7,105
Others | 7,890 | 1,128 | 10,506
Total deferred tax assets | 838,359 | 119,883 | 787,641
less: Valuation allowance | (807,650) | (115,492) | (751,370)
Net deferred tax assets | 30,709 | 4,391 | 36,271
Deferred tax liabilities |  |  |
Equity investment | (41) | (6) | (999)
Property, plant and equipment | (16,747) | (2,395) | (16,110)
Disposal of Beijing Century Friendship | (3,126) | (447) | (3,126)
Intangible assets | (58,054) | (8,302) | (65,998)
Right-of-use assets | (29,165) | (4,171) | (32,497)
Others | 1,422 | 205 | (411)
Total deferred tax liabilities | (105,711) | (15,116) | (119,141)
Deferred tax assets, net | 0 | 0 | 0
Deferred tax liabilities, net | ¥ (75,002) | $ (10,725) | ¥ (82,870)

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