1. School of Management and Economics, Beijing Institute of Technology, Beijing, China
2. School of Economics, Zhejiang University, Hangzhou, China
3. School of Business, Huzhou University, Huzhou City, China
4. School of Finance, Anhui University of Finance and Economics, Bengbu, China
5. Othman Yeop Abdullah Graduate School of Business, Universiti Utara Malaysia 06010, Sintok, Malaysia
6. Center for Energy and Environmental Policy Research, Beijing Institute of Technology, Beijing, China