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, 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, Yuncheng University, Shaanxi University of Science and Technology, Shaanxi University of Science and Technology, Xi'an Technological University, North University of China and affiliation not provided to SSRN