Taxes (Details) - Schedule of deferred tax assets - USD ($)	Apr. 30, 2023	Jul. 31, 2022
Deferred tax assets:
Allowance for doubtful account		$ 105,059
Net operating loss carry forwards	642,107	1,563,354
Deferred tax assets before valuation allowance	642,107	1,668,413
Less: valuation allowance	(642,107)	(1,668,413)
Net deferred tax assets