1. Assistant Professor, School of Economics and Management, Hebei Univ. of Technology, Tianjin 300401, PR China. ORCID: .
2. Assistant Professor, School of Management, Shandong Univ., Jinan 250100, PR China (corresponding author). ORCID: .
3. Assistant Professor, College of Management and Economics, Tianjin Univ., Tianjin 300072, PR China.
4. Professor, College of Management and Economics, Tianjin Univ., Tianjin 300072, PR China.