v3.26.1
Long-term investments (Tables)
12 Months Ended
Dec. 31, 2025
Long-term Investments  
Schedule of Long-term investments
                       
    December 31,
2024
    December 31,
2025
    December 31,
2025
 
    RMB     RMB     USD  
5.0% Investment in a company in mobile games industry     600,000       600,000       85,363  
5.0% Investment in a company in central processing advertising algorithm services     600,000       600,000       85,363  
Subtotal     1,200,000       1,200,000       170,726  
Less: Impairment loss     1,102,938       1,103,089       156,938  
Total     97,062       96,911       13,788