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Stockholders' Equity (Tables)
6 Months Ended
Nov. 30, 2020
Equity [Abstract]  
Schedule of Outstanding Stock Warrants

Warrant activities for the six months ended November 30, 2020 are summarized as follows:

 

    Number of Warrants     Weighted Average
Exercise Price
    Weighted
Average
Remaining
Contractual
Term (Years)
    Aggregate
Intrinsic Value
 
Balance Outstanding May 31, 2020     803,000     $ 83.04       -     $ -  
Granted     17,054       21.99                  
Cancelled     -       -                  
Balance Outstanding November 30, 2020     820,054     $ 81.74       3.10     $ -  
Exercisable, November 30, 2020     820,054     $ 81.74       3.10     $ -