1. Research Institute of Economics and Management, Southwestern University of Finance and Economics, Chengdu 611130, China
2. School of Economics, Southwestern University of Finance and Economics, Chengdu 611130, China
3. West Institute for Economic Research, Southwestern University of Finance and Economics, Chengdu 611130, China
4. School of Accounting, Shanxi University of Finance and Economics, Taiyuan 030006, China
5. Paul Merage School of Business, University of California, Irvine, CA 92697, USA