The related party transactions of the Group are as follows: (Details) - USD ($)	3 Months Ended	6 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Related Party Transaction [Line Items]
Interest income/(expense)	$ 4,862	$ (3,064)	$ 7,397	$ 1,102
B E Y E B E [Member]
Related Party Transaction [Line Items]
Interest income/(expense)	(3,684)	3,064	(6,218)	(1,102)
S Z B E Y E B E [Member]
Related Party Transaction [Line Items]
Fixed fee license revenue	70,500	70,500	141,000	141,000
Royalty revenue	29,399		29,399	34,796
Rental expense	4,336	4,179	8,604	8,359
Weihong Du [Member]
Related Party Transaction [Line Items]
Payroll expense	7,500	7,500	15,000	15,000
Liou Xie [Member]
Related Party Transaction [Line Items]
Payroll expense	22,743	21,875	44,618	43,706
Liumei Li [Member]
Related Party Transaction [Line Items]
Payroll expense	$ 9,000		$ 18,000

The element represents rental expense.

No definition available.

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The element represents royalty revenue recieved.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Other employee benefit expense includes, but is not limited to, service component of net periodic benefit cost for defined benefit plan. Excludes compensation cost in cost of good and service sold.

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Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense.

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