FAIR VALUE MEASUREMENTS - Additional Information (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Nonrecurring
FAIR VALUE MEASUREMENTS
Impairment charge, long-lived assets	¥ 0	¥ 0

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Period Type:	duration