1. School of Economics and Finance, South China University of Technology, Guangzhou 510006, China
2. School of International Education, South China University of Technology, Guangzhou 510006, China
3. School of Economics and Management, South China Normal University, Guangzhou 510631, China
4. Dongguan Power Supply Bureau, Guangdong Power Grid Company Ltd., Guangzhou 510663, China
5. School of Journalism and Communication, South China University of Technology, Guangzhou 510006, China