Guiying YAN is a Professor at Academy of Mathematics and systems science, Chinese Academy of Sciences(CAS). Professor YAN received her PhD degree in Mathematics from Shandong University in 1995. She finished her postdoctor program at the Institute of Applied Mathematics, CAS in 1997. She has visited many universities such as South California University, Alberta University, Hongkong University and so on. Her research is concerned with graph theory and its applications. Now, she is a vice director of National Center for Mathematics and Interdisciplinary Sciences, CAS.