1. Associate Professor, School of Economics and Management, Beijing Jiaotong Univ., Beijing 100044, China.
2. Master’s Candidate, School of Economics and Management, Beijing Jiaotong Univ., Beijing 100044, China. ORCID: .
3. Associate Professor, School of Economics and Management, Beijing Jiaotong Univ., Beijing 100044, China (corresponding author). ORCID: .
4. Master’s Candidate, School of Economics and Management, Beijing Jiaotong Univ., Beijing 100044, China.