1. Economics (M251), Business School University of Western Australia WA 6009, Australia hui.geng@research.uwa.edu.au
2. Economics (M251), Business School University of Western Australia WA 6009, Australia Yanrui.wu@uwa.edu.au
3. School of Economics Hefei University of Technology Hefei Anhui Province, China xingshi.shane@hfut.edu.cn