First Author:   Yue Sun Chengdu Vocational & Technical College of Industry syesunyue@163.com   No. 818, Da''an Road, Zhengxing Sub-district Chengdu, 610218, China   18181996815(Phone) 18181996815(Fax) Second Author: Dengjun Zhang UiS School of Business and Law, University of Stavanger dengjun.zhang@uis.no