v3.25.1
Summary of principal accounting policies (Tables)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Schedule of Straight-line Method Over Estimated Useful Lives

 

Electronic and mining equipment 3-6 years
Furniture and fixtures 3-6 years
Vehicles 3 years
Summary on Exchange Rates Applied

The exchange rates applied are as follows:

 

Balance sheet items, except for equity accounts  December 31, 2024   December 31, 2023   

December 31,

2022

 
RMB:USD   7.1884    7.0827      6.8979  
HKD:USD   7.7625    7.8157      7.7990  

 

Items in the statements of operations and comprehensive loss, and statements cash flows:

 

   December 31, 2024   December 31, 2023   

December 31,

2022

 
RMB:USD   7.1887    7.0467      6.8979  
HKD:USD   7.7625    7.8284      7.7959