1. Chencan Liu, Lecturer, School of Public Administration, North China University of Water Resources and Electric Power, Zhengzhou, Henan Province, China
2. Aolong Liu, Associate Professor, School of Economics, Henan University, Kaifeng, China;, Email: alliu92@henu.edu.cn
3. Dandan Xu, School of Economics Henan University, Kaifeng, China