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LONG-TERM INVESTMENTS - Equity investments without readily determinable fair value (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Aug. 31, 2023	Mar. 31, 2021	Dec. 31, 2018	Dec. 31, 2015
LONG-TERM INVESTMENTS
Equity investments with readily determinable fair value	¥ 28,699		¥ 51,624
CHS
LONG-TERM INVESTMENTS
Business Combination, Consideration Transferred	¥ 27,664	$ 3,790
Concord Healthcare Singapore Pte. Ltd
LONG-TERM INVESTMENTS
Percentage of equity interest sold	0		8.73
Equity investments with readily determinable fair value			¥ 22,925
Legion Healthcare Partners LLC
LONG-TERM INVESTMENTS
Percentage of equity interest sold	5.83		5.83		5.83
Equity investments with readily determinable fair value	¥ 6,439		¥ 6,439
Impairment	¥ 0		¥ 0
Beijing He Xu elderly Care Service Co., LTD
LONG-TERM INVESTMENTS
Percentage of equity interest sold	4		4	4
Remaining ownership interest percentage	4.00%
Equity investments with readily determinable fair value	¥ 100		¥ 100
Impairment	¥ 0
Allcure Information
LONG-TERM INVESTMENTS
Percentage of equity interest sold	9.6		9.6			9.6	20
Equity investments with readily determinable fair value	¥ 22,160		¥ 22,160
Impairment	¥ 0		¥ 0

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- Definition

It represents the percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting.

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Fair value portion of investments accounted under the equity method.

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