Lease Right-of-Use Asset and Lease Liabilities - Schedule of Other Information (Details) - USD ($)	9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Leases [Abstract]
Operating cash flow from operating lease	$ 13,462	$ 9,639
Right-of-use assets obtained in exchange for operating lease liabilities	$ 2,703	$ 16,041
Remaining lease term for operating lease (years)	2 months 12 days	1 year 5 months 1 day
Weighted average discount rate for operating lease	3.30%	3.30%