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Accounts Receivable (Tables)
3 Months Ended
Aug. 31, 2020
Receivables [Abstract]  
Schedule of accounts receivable

Accounts receivable, consisted of the following:

 

   August 31, 2020  May 31, 2020
Accounts Receivable  $71,188   $184,019 
Less: Allowance for doubtful accounts   (2,392)   (1,818)
Total  $68,796   $182,201