Lease Right-of-Use Asset and Lease Liabilities - Schedule of Operating Lease Liability (Details) - USD ($)	9 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Jul. 31, 2020	Aug. 02, 2019
Leases [Abstract]
Operating lease liability, Beginning balance	$ 26,772	$ 26,772
Add: additional portion (increase of leasing fee)	2,719	2,719
Less: gross repayment	(27,770)	(14,151)
Add: imputed interest	1,003	743
Foreign exchange translation gain	446	549
Operating lease liability, Ending balance	3,170	16,632
Less: lease liability current portion	(3,170)	(16,632)	$ (16,632)	$ (26,823)
Lease liability non-current portion