Income Taxes (Details) - USD ($)	9 Months Ended	12 Months Ended
	Feb. 28, 2018	May 31, 2021	May 31, 2020
Income Tax Disclosure [Abstract]
Percentage of federal statutory rates		21.00%	21.00%
Operating loss carryforwards, term		20 years
Federal tax refund		$ 586,000
Foreign bank account opened	$ 25,000
Accrued expense	$ 30,000