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Lease (Details 2) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Lease    
Opening balance ¥ 0 ¥ 0
Addition 443 0
Lease payments (130) 0
Accretion of interest 17 0
Closing balance ¥ 330 ¥ 0