1. Postdoctoral Workstation of Guangxi Rural Credit Union and Southwestern University of Finance and Economics, Nanning 530000, China
2. School of Business, Zhengzhou University, Zhengzhou 450001, China
3. School of Economics and Management, Nanning Normal University, Nanning 530001, China
4. The Institute for Sustainable Development, Macau University of Science and Technology, Macao 999078, China