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SUMMARY OF NET INCOME PER SHARE, BASIC AND DILUTED (Details) - CNY (¥)
¥ / shares in Units, ¥ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Net income (loss) per share attributable to ordinary shareholders of the Company    
Numerator for basic calculation-Net income (loss) attributable to ordinary shareholders ¥ (26,286) ¥ 120,395
Denominator for basic calculation-weighted average ordinary shares outstanding 201,065,185 203,856,436
Dilutive effect of share options 2,008,657
Denominator for diluted calculation 201,065,185 205,865,093
Basic net income (loss) per ordinary share ¥ (0.13) ¥ 0.59
Diluted net income (loss) per ordinary share ¥ (0.13) ¥ 0.58