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Employee benefits (Tables)
12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Schedule of Employee Welfare Benefits Expenses

             
   For the years ended December 31, 
   2023   2024   2025 
   RMB   RMB   RMB 
Contributions to medical and pension schemes   21,095    18,426    17,320 
Other employee benefits   6,726    6,086    5,696 
Total   27,821    24,512    23,016