1. School of Finance, Guangdong University of Foreign Studies, Guangzhou, China
2. Institute of Financial Openness and Asset Management, Guangzhou, China
3. Southern China Institute of Fortune Management Research, Guangzhou, China
4. China Securities Depository and Clearing Co. Ltd, Shenzhen Branch, Shenzhen, China
5. School of Economics, Chongqing Technology of Business University, Chongqing, China