LU Jing
School of Economics and Business Administration,Chongqing University,Chongqing 400030,China;Graduate School of IR/PS,University of California,San Diego 92093,USACAO Guo-hua
School of Economics and Business Administration,Chongqing University,Chongqing 400030,ChinaTANG Xiao-wo
School of Management and Economics,University of Electronic Science and Technology,Chengdu 610054, China