Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($)	May 31, 2021	May 31, 2020
Leases [Abstract]
Year ended May 31, 2021	$ 61,881
Year ended May 31, 2022	33,881
Year ended May 31, 2023	19,018
Year ended May 31, 2024	1,990
Total lease payments	116,770
Less: Imputed interest	(7,757)
Present value of minimum lease payments	109,013	$ 181,525
Year ended May 31, 2021	1,948,534
Year ended May 31, 2022	1,666,035
Year ended May 31, 2023	253,192
Year ended May 31, 2024	12,304
Total lease payments	3,880,065
Less: Imputed interest	(286,058)
Present value of minimum lease payments	$ 3,594,007	$ 5,455,656