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Cash and Cash Equivalents (Details) - Schedule of considers short-term highly liquid investments - USD ($)
Aug. 31, 2021
May 31, 2021
Schedule of considers short-term highly liquid investments [Abstract]    
Cash in banks $ 7,552,534 $ 7,317,517
Money market funds 53,408 53,129
Total $ 7,605,942 $ 7,370,646