v3.26.1
Summary of principal accounting policies (Tables)
12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Schedule of Straight-line Method Over Estimated Useful Lives

 

Mining equipment  3-6 years
Plant  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, 2025   December 31, 2024  

December 31, 2023

 
RMB:USD   7.0789    7.1884    7.0827 
HKD:USD   7.7818    7.7625    7.8157 

 

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

 

   December 31, 2025   December 31, 2024  

December 31, 2023

 
RMB:USD   7.0593    7.1887    7.0467 
HKD:USD   7.7818    7.7625    7.8284