1. Ph.D. Candidate, School of Economics and Management, Tongji Univ., Siping Rd. 1239, Shanghai 200092, China (corresponding author).
2. Professor, School of Economics and Management, Tongji Univ., Siping Rd. 1239, Shanghai 200092, China.
3. Ph.D. Candidate, School of Economics and Management, Tongji Univ., Siping Rd. 1239, Shanghai 200092, China.