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Prepayments and Other Assets, Net - ​Schedule of Prepayments and Other Assets, Net (Details) - USD ($)
Sep. 30, 2025
Mar. 31, 2025
​Schedule of Prepayments and Other Assets, Net [Abstract]    
Prepayments to suppliers and others $ 1,205,120 $ 6,815,621
Less: allowance (6,423) (6,423)
Prepayments and other assets, net $ 1,198,697 $ 6,809,198