1. School of Economics and Finance, Xi’an Jiaotong University, Xi’an 710049, China
2. International Business School, Shaanxi Normal University, Xi’an 710062, China
3. School of Economics and Management, Beijing University of Chemical Technology, Beijing 100029, China
4. College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
5. Department of Management Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong