v3.25.2
Convertible notes payable (Tables)
6 Months Ended
Jun. 30, 2025
Convertible Notes Payable  
Schedule of Convertible notes payable
                 
    December 31,
2024
    June 30,
2025
    June 30,
2025
 
    RMB     RMB     USD  
Investors     149,090,866       -       -  
Total     149,090,866       -       -