I began my research career in the 2010s at Shandong University, working in Graph Theory. My early research focused on the cycles-packing problems of graphs and now my main research interests focus on graph coloring problems. Since 2012, in which year I got the PH.D. degree from School of Mathematics, Shandong University under the supervision of Prof. Guizhen Liu and Prof. Jian-Liang Wu, I am working for School of Mathematics and Statistics, Xidian University as a researcher. I am also a member of the board of directors of Special Interest Group in Graph Theory & Combinatorics from the Operations Research Society of China, and a commissary of CSIAM Activity Group on Graph Theory and Combinatorics with Applications. Until now, I have published over 60 peer-reviewed papers on graph coloring and graph packing. My recent research is mainly supported by the National Natural Science Foundation of China and the Natural Science Basic Research Plan in Shaanxi Province of China.