Note 5 - Acquisition of A Subsidiary: Schedule of Fair Value of Assets and Liabilities of Haitai (Details) - USD ($)	Jan. 31, 2015	Apr. 30, 2016	May 31, 2015
Assets
Other receivables and deposits		$ 0	$ 68,795
Total assets		7,902,079	12,211,843
Liabilities
Total liabilities		5,724,661	5,149,350
Goodwill		0	377,171
Taizhou Haitai Motor Vehicle Inspection Co, Ltd.
Assets
Construction in progress	$ 1,100,243
Other receivables and deposits	101,036
Cash and cash equivalents	1,132
Total assets	1,202,411
Liabilities
Accrued expenses and other payables	1,736,068
Total liabilities	1,736,068
Net assets acquired	(533,657)
Cash consideration	105,006
Goodwill	377,171	$ 377,171	$ 377,171
Cash consideration paid	105,006
Less: cash acquired from the transaction	(1,132)
Net cash used in acquisition	103,874
Taizhou Haitai Motor Vehicle Inspection Co, Ltd. | Shanghai Yuguang Automobile Inspection Technology Co Ltd
Liabilities
Net assets acquired	$ (272,165)