Other receivable (Details 1) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Sep. 30, 2025 |
|
| Other receivable | ||
| Balance as of beginning of year | $ 18,442,831 | $ 0 |
| Addition | 0 | 18,203,745 |
| Translation adjustments | 590,876 | 239,086 |
| Balance as of end of year | $ 19,033,707 | $ 18,442,831 |