3. Critical Accounting Policies and Estimates (Details Narrative) - USD ($)	9 Months Ended	12 Months Ended
Feb. 28, 2019	Feb. 28, 2018	May 31, 2018
Reclassification of securities from AOCI to Retained Earnings	$ 486,789
Allowance for doubtful accounts	0		$ 0
Cash balances uninsured	306,429		780,726
Inventory reserve	0		0
Long-term investment	175,000		250,000
Impairment of Long-life assets	0	$ 0	0
Cash equivalents	$ 0		0
Sales Revenue, Net [Member]
Concentration percentage		0.00%
Sales Revenue, Net [Member] \| Two Customers [Member]
Concentration percentage	26.00%
Sales Revenue, Net [Member] \| One Customers [Member]
Concentration percentage		34.00%
Sino-U.S. Finance [Member]
Loss on investment			(60,000)
Long-term investment	$ 0		$ 0

Amount of allowance for credit loss on accounts receivable.

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