Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, affiliation not provided to SSRN, Shaanxi University of Science and Technology and Shaanxi University of Science and Technology