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3. Investment in Affiliated Company (Details - Statement of Operations) - USD ($)
3 Months Ended 9 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Equity Method Investments and Joint Ventures [Abstract]        
Expenses $ 67,778 $ 89,484 $ 126,823 $ 319,269
Loss before provision for income taxes (67,778) (89,484) (126,823) (319,269)
Provision for income taxes 0 0 0 6,000
Net loss $ (67,778) $ (89,484) $ (126,823) $ (325,269)