1. School of Economics, Liaoning University, Shenyang, China
2. School of Business Administration, Northeastern University, Shenyang, China; School of Economics, Northeastern University at Qinhuangdao, Qinhuangdao, China
3. Center for China Public Sector Economy Research, Jilin University, Changchun, China; School of Economics, Jilin University, Changchun, China
4. School of Humanities and Law, Northeastern University, Shenyang, China; School of Economics, Northeastern University at Qinhuangdao, Qinhuangdao, China