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Summary of Significant Accounting Policies - Schedule of Computation of Dilutive Loss Per Common Share (Details) - shares
6 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Total 928,751 867,751
Stock Warrants [Member]    
Total 820,055 803,001
Convertible Notes [Member]    
Total 108,696 64,750