v3.26.1
Leases (Tables)
 12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Schedule of Operating Lease

Supplemental balance sheet information related to operating lease was as follows:

 

   As of 
   December 31,   December 31, 
   2024   2025 
   RMB   RMB   US$ 
Right-of-use assets   3,739,296    6,350,997    903,568 
Less: impairment   (1,857,761)   (512,701)   (72,943)
Right-of-use assets   1,881,535    5,838,296    830,625 
                
Operating lease liabilities – current   812,669    2,281,725    324,625 
Operating lease liabilities – non-current   1,898,004    4,403,452    626,487 
Total operating lease liabilities   2,710,673    6,685,177    951,112 

 

The movement of impairment of right-of-use assets is as follows:

 

   As of 
   December 31,   December 31, 
   2024   2025 
   RMB   RMB   US$ 
Beginning balance   3,244,676    1,857,761    264,307 
Addition   
-
    
-
    
-
 
Derecognition   (1,386,915)   (1,345,060)   (191,364)
Ending balance   1,857,761    512,701    72,943 

 

The weighted average remaining lease terms and discount rates for the operating lease as of December 31, 2025 were as follows:

 

Remaining lease term and discount rate:    
Weighted average remaining lease term (years)   4.06 
Weighted average discount rate   3.62%

A summary of lease expenses recognized in the consolidated statements of operations as of December 31, 2024 and 2025 and supplemental cash flow information related to operating leases were as follows:

 

   As of 
   December 31,   December 31, 
   2024   2025 
   RMB   RMB   US$ 
Lease expense            
Operating lease expense   3,887,462    1,374,121    195,499 
Short-term lease expense   19,401,914    24,304,964    3,457,911 
Sublease income (1)   (11,725,219)   (14,153,470)   (2,013,640)
Total lease expense   11,564,157    11,525,615    1,639,770 
                
Other information               
Cash paid for operating leases   5,561,964    1,309,059    186,242 
Right-of-use assets obtained in exchange for operating new lease liabilities   2,272,088    5,201,567    740,036 

 

*(1) For the years ended December 31, 2023, 2024 and 2025, the Group incurred sublease income of RMB707,009, RMB11,725,219 and RMB14,153,470 (US$2,013,640), and sublease cost of RMB858,098, RMB11,088,503 and RMB12,013,832 (US$1,709,229), respectively.
Schedule of Future Minimum Payments

The following is a schedule of future minimum payments under the Group’s operating leases as of December 31, 2025:

 

Year  Amounts 
   RMB   US$ 
2026   2,479,065    352,701 
2027   1,502,656    213,786 
2028   1,248,788    177,667 
2029   1,168,715    166,275 
2030   679,907    96,732 
Thereafter   79,625    11,328 
Total lease payments   7,158,756    1,018,489 
Less: imputed interest   473,579    67,377 
Total operating lease liabilities, net of interest   6,685,177    951,112