TAXATION - Components of deferred taxes (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Deferred tax asset
Net operating loss	¥ 357,483	$ 51,830	¥ 216,902
Foreign exchange loss	1,330	193	7,679
Depreciation and amortization	22,535	3,267	10,479
Property, plant and equipment impairment	6,997	1,014	6,997
Deposits for non-current assets	18,475	2,679	18,475
Allowance for net investment in financing lease	5,137	745	5,137
Allowance for doubtful accounts	14,746	2,138	14,013
Lease liabilities	58,901	8,540	56,673
Other long-term assets	104,912	15,211	92,261
Equity investment	7,553	1,095	7,574
Others	13,728	1,990	7,971
Total deferred tax assets	611,797	88,702	444,161
less: Valuation allowance	(565,022)	(81,920)	(396,919)
Net deferred tax assets	46,775	6,782	47,242
Deferred tax liabilities
Equity investment	(1,170)	(170)	(287)
Property, plant and equipment	(1,682)	(244)	(1,428)
Disposal of Beijing Century Friendship	(3,126)	(453)	(3,126)
Intangible assets	(81,336)	(11,793)	(156,189)
Right-of-use assets	(46,873)	(6,796)	(48,259)
Capitalized interest	(19,179)	(2,781)	(19,179)
Others	(5,986)	(867)	(3,198)
Total deferred tax liabilities	(159,352)	(23,104)	(231,666)
Deferred tax assets, net	0	0	0
Deferred tax liabilities, net	¥ (112,577)	$ (16,322)	¥ (184,424)

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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