NOTE 10 - INCOME TAXES: Schedule of Effective Income Tax Rate Reconciliation (Details)	Apr. 30, 2020	Apr. 30, 2019
Details
U.S. Federal and state tax rate	21.00%	38.00%
Stock- based compensation	0.00%	(4.80%)
Difference in US / China statutory rate	(9.70%)	(9.50%)
Valuation allowance	(11.30%)	(23.70%)