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SIGNIFICANT ACCOUNTING POLICIES (Details) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2025 CNY (¥) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2023 CNY (¥)
SIGNIFICANT ACCOUNTING POLICIES |  |  |
Convenience translation | 6.9931 |  |
Expected credit loss for accounts receivables | ¥ 700 | ¥ 3,600 | ¥ 1,700
Provision/(reversal) for expected credit losses | (700) | 3,400 | 2,400
Impairment of long-lived asset | 0 | 0 | 0
Impairment loss on goodwill | ¥ 0 | ¥ 0 | ¥ 0

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