NOTE 13 - CONCENTRATIONS AND CREDIT RISK: Schedule of cash position by geographic area (Details) - USD ($)	9 Months Ended
	Jan. 31, 2022	Apr. 30, 2021
Details
Property, Plant and Equipment, Disposals	$ 97,271
Percent of Cash held in United States	8.50%	10.30%
Cash held in United States		$ 161,860
Cash held in PRC	$ 1,045,774	$ 1,403,969
Percent of Cash held in PRC	91.50%	89.70%