1. School of International Economics and International Relations, Liaoning University, Shenyang, Liaoning, China
2. Northeast Asian Research Center, Jilin University, Changchun, China
3. Department of Economics, University of Warwick, Coventry, UK
4. School of Business Administration, Northeastern University, Shenyang, China
5. School of Economics, Northeastern University at Qinhuangdao, Qinhuangdao, China