Note 11 - Concentrations and Credit Risk (Details) - USD ($)	Oct. 31, 2017	Apr. 30, 2017
Details
Cash and cash equivalents held in PRC	$ 988,037	$ 30,781

Represents the monetary amount of Cash and cash equivalents held in PRC, as of the indicated date.

No definition available.

Name:	fil_CashAndCashEquivalentsHeldInPRC
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant