v3.26.1
Accounts receivable, net (Details 1)
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Credit Loss [Abstract]      
Beginning balance ¥ 3,951,391
Addition
Recovery (3,951,391)
Ending balance