Yazhi Liu received his B.Sc., M.S., and Ph.D. degrees in 2005, 2008, and 2013, respectively, in computer science from Beijing University of Posts and Telecommunications (BUPT), China. He was a visiting scholar at the Department of Computer Science, Tsinghua University, China, from September 2019 to July 2020. Currently, he is an associate professor and Dean of the Department of Computer Science and Techology, North China University of Science and Technology, China. His current research interests include computer networks and mobile computing.