1. 1 School of Economics and Trade, Guangdong University of Foreign Studies, Guangzhou 510006, China. E-mail: jling163@163.com
2. 2 School of Accounting, Guangdong University of Foreign Studies, Guangzhou 510006, China. E-mail: 908646457@qq.com
3. 3 Guangdong University of Foreign Studies, Guangzhou 510420, China. E-mail: kumau@126.com
4. 4 Business School, Guangxi University for Nationalities, Nanning 530006, China. E-mail: lzylds@163.com
5. 5 School of Accounting, Guangdong University of Foreign Studies, Guangzhou 510006, China. E-mail: 306656782@qq.com