Note 1 - Organization and Principal Activities (Details)	12 Months Ended
	Apr. 30, 2016
Shanghai Yuzhong Financial Information Service Co Ltd
Domicile and Date of Incorporation	The PRC July 16, 2014
Effective Ownership	49.80%
Principal Activities	Investment holding
Shanghai Yuguang Automobile Inspection Technology Co Ltd
Domicile and Date of Incorporation	The PRC July 17, 2014
Effective Ownership	59.80%
Principal Activities	Investment holding
Redtone Telecommunication China Limited
Domicile and Date of Incorporation	Hong Kong May 26, 2005
Effective Ownership	100.00%
Principal Activities	Investment holding
Redtone Telecommunication Shanghai Limited
Domicile and Date of Incorporation	The PRC July, 26, 2005
Effective Ownership	100.00%
Principal Activities	Provides technical support services to group companies
Shanghai Huitong Telecommunication Company Limited
Domicile and Date of Incorporation	The PRC March, 26, 2007
Effective Ownership	100.00%
Principal Activities	Marketing and distribution of IP call and discounted call services in the PRC
Shanghai Jiamao E Commerce Company Limited
Domicile and Date of Incorporation	The PRC March 21, 2008
Effective Ownership	100.00%
Principal Activities	Marketing and distribution of IP call and discounted call services in the PRC
Shanghai Xin Chang Information Technology Company Limited
Domicile and Date of Incorporation	The PRC January 13, 2006
Effective Ownership	56.00%
Principal Activities	Marketing and distribution of IP call and discounted call services in the PRC
VMS Technology Limited
Domicile and Date of Incorporation	Hong Kong September 14, 1998
Effective Ownership	100.00%
Principal Activities	Trading of discounted call related equipment and provision of related services
RT Communications Ltd
Domicile and Date of Incorporation	BVI February 24, 2010
Effective Ownership	100.00%
Principal Activities	Investment holding
Taizhou Haitai Motor Vehicle Inspection Co, Ltd.
Domicile and Date of Incorporation	The PRC October 31, 2013
Effective Ownership	30.50%
Principal Activities	Investment holding
Feng Cheng Motor Vehicle Inspection Co., Ltd.
Domicile and Date of Incorporation	The PRC November 30, 2012
Effective Ownership	30.50%
Principal Activities	Dormant