Liang Liu received an M.S. in systems analysis and integration and a Ph.D. in applied mathematics from Qufu Normal University, Qufu, China, in 2010 and 2013, respectively. He has also been a postdoctoral fellow at Nanjing University of Science and Technology, Nanjing, China, from July 2015 to May 2019. He is currently a professor with the Institute of Automation, Qufu Normal University. His research interests include nonlinear system control.