1. Taiping Deng, School of Economics and Management, Hunan Applied Technology University Changde Hunan 415100, China
2. Jingyang Tang, School of Management, Changde college, Changde Hunan 415100, China
3. Jiao Li ,School of Economics and Management, Hunan Applied Technology University Changde Hunan 415100, China
4. Xi He, School of Economics and Management, Hunan Applied Technology University Changde Hunan 415100, China