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Other payables (Tables)
12 Months Ended
Dec. 31, 2025
Other payables  
Schedule of other payables

As of

As of

As of

  ​ ​ ​

December 31, 

  ​ ​ ​

December 31, 

  ​ ​ ​

December 31, 

2024

2025

2025

RMB

RMB

US$

Accrued expenses

 

1,352,992

 

2,050,459

 

293,086