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RESTRICTED NET ASSETS (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)
RESTRICTED NET ASSETS
Reserve fund as percentage of registered capital	50.00%	50.00%
Minimum | CN | Subsidiaries
RESTRICTED NET ASSETS
Percentage of annual after tax profit to be allocated to reserve fund	10.00%
Variable interest entities
RESTRICTED NET ASSETS
Net assets restricted	¥ 4,084,202	$ 575,248
Variable interest entities | Minimum | CN
RESTRICTED NET ASSETS
Percentage of annual after tax profit to be allocated to reserve fund	10.00%
Statutory funds as a percentage of registered capital	50.00%

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Total assets that cannot be used for operating purposes because of contract or regulatory requirements that are in effect for a period that extends beyond one year.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480632/954-210-45-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480602/954-210-50-2

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