Segment reporting (Details 4) - USD ($)	Mar. 31, 2026	Sep. 30, 2025
Total non-current assets	$ 37,740,991	$ 53,907,227
PRC [Member]
Total non-current assets	34,227	6,973,528
United States of America [Member]
Total non-current assets	$ 37,706,764	$ 46,933,699

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

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+ Details