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Intangible assets, net (Tables)
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets, net
                       
    December 31,
2023
    December 31,
2024
    December 31,
2024
 
    RMB     RMB     USD  
Non-compete agreements     5,886,401       -       -  
Subtotal     5,886,401       -       -  
Less: accumulated amortization     (5,886,401 )     -       -  
Intangible assets, net*     -       -       -