v3.26.3
Revenue and contract liabilities (Details Narrative) - CNY (¥)
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]    
Contract with customer, liability, revenue recognized ¥ 279,000 ¥ 27,262,000
Remaining performance obligations ¥ 16,122,000