Zhifeng Liu received a Ph.D. degree in mechanical design from the Mechanical Engineering and Automation College, Northeastern University, in 2001. He is currently a professor at the Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, and a distinguished professor at the Institute of Advanced Manufacturing and Intelligent Technology, Beijing University of Technology. His research interests include the design and control of intelligent manufacturing systems, robotic motion control, and digital twins.