1. School of Business Administration, Zhongnan University of Economics and Law, Wuhan 430073, China
2. School of Business Administration, South China University of Technology, Guangzhou 510642, China
3. School of Statistics, Institute of Quantitative Economics, Huaqiao University, Xiamen 361021, China
4. College of Economics and Management, South China Agricultural University, Guangzhou 510642, China
5. Research Center for Green Development of Agriculture, South China Agricultural University, Guangzhou 510642, China