Juanjuan Xu received the B.E. degree in mathematics from Qufu Normal University in 2006, the M.E. degree in mathematics in 2009 from Shandong University, and the Ph.D. degree in control science and engineering in 2013 from Shandong University. In the year 2015, she obtained the CAA Excellent Doctoral Dissertation Award. In the year 2019, she obtained a grant from the National Science Foundation for Excellent Young Scholars of P. R. China. Currently, she is a professor of Qilu Young Scholar at School of Control Science and Engineering, Shandong University. Her research interests include distributed consensus, optimal control, game theory, stochastic systems, and time-delay systems.