Xin Li, associate professor and senior engineer, School of Mechanical and Materials Engineering, North China University of Technology. Dr. Li obtained his PhD degree from Beihang University in 2013 and had worked in China Aerospace Science and Industry Corporation Company from 2013 to 2020. His research interests consist of wearable robots, bio-robots, and complex electromechanical system design. He has published more than 20 papers, authorized 10 patents, and won a second prize for the National Defense Science and Technology Progress Award.