v3.26.1
Taxes (Details)
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2023
Statutory rate to the Company's effective tax rate      
China Statutory income tax rate 25.00% 25.00% 25.00%
Effect of PRC preferential tax rate and tax exemption 0.00% 0.00% 0.50%
Research and development ("R&D") tax credit 0.00% 0.10% 2.90%
Exempt income 0.00% 0.00% 0.90%
Non-PRC entities not subject to PRC tax 0.60% (14.70%) (20.80%)
Change in valuation allowance (13.20%) 0.10% 0.50%
Others (12.40%) (10.40%) (1.40%)
Effective tax rate 0.00% 0.10% 7.60%