Related Party Balance and Transactions - Schedule of Balances of Contract Assets, Net from Joint Ventures (Details) - USD ($) |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Schedule of Balances of Contract Assets, Net from Joint Ventures [Line Items] | ||
| Contract assets, net | $ 2,260,589 | $ 5,665,748 |
| Contract liabilities | 47,487,628 | 56,361,136 |
| Joint Ventures [Member] | ||
| Schedule of Balances of Contract Assets, Net from Joint Ventures [Line Items] | ||
| Contract assets, net | 590,015 | 524,150 |
| KC-CRFG JV [Member] | Joint Ventures [Member] | ||
| Schedule of Balances of Contract Assets, Net from Joint Ventures [Line Items] | ||
| Contract assets, net | 382,999 | 303,585 |
| Contract liabilities | 0 | 359,629 |
| KC-Glory JV [Member] | Joint Ventures [Member] | ||
| Schedule of Balances of Contract Assets, Net from Joint Ventures [Line Items] | ||
| Contract assets, net | 164,692 | 177,965 |
| KC-Geotech JV [Member] | Joint Ventures [Member] | ||
| Schedule of Balances of Contract Assets, Net from Joint Ventures [Line Items] | ||
| Contract assets, net | $ 42,324 | $ 42,600 |