Chengdu University of Information Technology, Chengdu University of Information Technology, Chengdu University of Information Technology, Chengdu University of Information Technology, affiliation not provided to SSRN, Chengdu University of Information Technology, affiliation not provided to SSRN, Chengdu University of Information Technology, Chengdu University of Information Technology, Chengdu University of Information Technology, Chengdu University of Information Technology and affiliation not provided to SSRN