TAI Ling1**, LI Mei-Zhuan1, LI Yong-Kang2, GONG Qiao-Juan1, WANG Bao-Li3, WANG Qin-Zhu3
1. Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China; 2. Department of Political Science and Law, Yuncheng University, Yuncheng 044000, China; 3. Maths & Information Technology School, Yuncheng University, Yuncheng 044000, China