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7. Property and Equipment (Details - property and equipment) - USD ($)
Feb. 28, 2019
May 31, 2018
May 31, 2017
Property Plant and Equipment, Gross $ 276,237 $ 189,924  
Less: accumulated depreciation (163,119) (124,674)  
Property Plant and Equipment. Net 113,118 65,250  
Furniture and Fixtures      
Property Plant and Equipment, Gross 177,574 $ 154,748  
Leasehold Improvements      
Property Plant and Equipment, Gross $ 98,663   $ 35,176