1. School of Finance and Economics, Jiangsu University, Zhenjiang 212013, Jiangsu, China
2. Information Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 520014, Shandong, China
3. Business School, Shenyang University, Shenyang 110044, China
4. School of Business Administration, Northeastern University, Shenyang 110819, China