Jichang Zhao received his B.E. and Ph.D. degrees from Beihang University in 2008 and 2014 under supervision of Prof. Ke Xu. From 2012 to 2013, he visited the department of Physics, Bar-Ilan University, Israel as a joint Ph.D student supervised by Prof. Shlomo Havlin. He is currently an associate professor at the School of Economics and Management, Beihang University. His research interests include online social media, complex networks and business intelligence.