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Leases (Tables)
12 Months Ended
Dec. 31, 2024
Leases [Abstract]  
Schedule of operating lease obligations
               
Twelve Months Ending December 31,   Operating Lease
Amount
 
    RMB     USD  
2025     848,214       117,997  
2026     466,843       64,944  
2027     243,281       33,844  
2028     -       -  
2029     -       -  
Thereafter     -       -  
Total lease payments     1,558,338       216,785  
Less: Interest     58,167       8,092  
Present value of lease liabilities     1,500,171       208,693