1. Ph.D. Candidate, School of Management, Shijiazhuang Tiedao Univ., 17 Beierhuan East Rd., Shijiazhuang 050043, China.
2. Professor, School of Economics and Law, Shijiazhuang Tiedao Univ., 17 Beierhuan East Rd., Shijiazhuang 050043, China.
3. Professor, School of Management, Shijiazhuang Tiedao Univ., 17 Beierhuan East Rd., Shijiazhuang 050043, China (corresponding author).