1. Economics and Management School, Hubei Polytechnic University, Huangshi 435003, China
2. Research Center for Mining and Metallurgy Culture and Socio-Economic Development in the Middle Reachers of Yangze River, Huangshi 435003, China
3. School of Economics and Management, China University of Geosciences, Wuhan 430074, China
4. Business School, Central South University, Changsha 410083, China