TAXATION - Components of deferred taxes (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)
Deferred tax asset
Net operating loss	¥ 425,390	$ 59,915	¥ 357,483
Foreign exchange loss	2,755	388	1,330
Depreciation and amortization	17,647	2,485	22,535
Property, plant and equipment impairment	2,340	330	6,997
Deposits for non-current assets	17,725	2,496	18,475
Allowance for net investment in financing lease	0	0	5,137
Allowance for doubtful accounts	29,299	4,127	14,746
Lease liabilities	59,875	8,433	58,901
Other long-term assets	94,791	13,351	104,912
Equity investment	7,005	987	7,553
Others	11,770	1,658	13,728
Total deferred tax assets	668,597	94,170	611,797
less: Valuation allowance	(623,044)	(87,754)	(565,022)
Net deferred tax assets	45,553	6,416	46,775
Deferred tax liabilities
Equity investment	(1,091)	(154)	(1,170)
Property, plant and equipment	(2,368)	(334)	(1,682)
Disposal of Beijing Century Friendship	(3,126)	(440)	(3,126)
Intangible assets	(71,825)	(10,116)	(81,336)
Right-of-use assets	(45,626)	(6,426)	(46,873)
Capitalized interest	(18,993)	(2,675)	(19,179)
Others	(2,062)	(291)	(5,986)
Total deferred tax liabilities	(145,091)	(20,436)	(159,352)
Deferred tax assets, net	0	0	0
Deferred tax liabilities, net	¥ (99,538)	$ (14,020)	¥ (112,577)

Amount of deferred tax assets deposits.

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Amount of deferred tax assets depreciation and amortization.

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Amount before allocation of valuation allowances of deferred tax asset attributable to Equity Investment.

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Amount of property, plant and equipment impairment.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for net investment in financing lease.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from provisions, reserves, allowances, and accruals, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on accounts receivable.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on financing receivable.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences from capitalized interest.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.

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Amount of deferred tax liability attributable to taxable temporary differences from the entity's basis in a discontinued operation.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.

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