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6. Intangible Assets (Details - Intangible assets, net) - USD ($)
Sep. 30, 2020
Mar. 31, 2020
Mar. 31, 2019
Intangible assets gross $ 237,833 $ 225,248  
Less: accumulated amortization (56,480) (28,297)  
Intangible assets net 181,353 196,951 $ 0
License [Member]      
Intangible assets gross 142,248 142,248  
Customer Relationships [Member]      
Intangible assets gross $ 83,000 $ 83,000