Tao Sun holds a Ph.D. and is a Professor and Deputy Dean of the School of Mechanical Engineering, Tianjin University, China. He is also the Deputy Director of the Key Laboratory of Mechanism Theory and Equipment Design, Ministry of Education, China. Professor Sun’s current research focuses on mechanisms and robotics, parallel kinematic robots, bio-inspired robots, orthopedic surgery and rehabilitation robots. He has published 50 SCI cited journal papers.He has been the principle investigator of 16 national/provincial projects and holds 32 patents, and has won several awards for his work. Shuofei Yang obtained his B.S. and Ph.D. degrees from Tianjin University, China, in 2011 and 2017, respectively. He is now a Research Associate in the Department of Industrial and Systems Engineering of The Hong Kong Polytechnic University, China. Dr. Yang's research interests include type synthesis, kinematics, and dynamics of robotic mechanisms. He has published 11 SCI cited journal papers and 1 EI cited journal paper. Binbin Lian holds a Ph.D. and is now an Associate Professor at the School of Mechanical Engineering, Tianjin University, China. Her research interests include performance analysis, optimal design, accuracy improvement, control and application of robotic mechanisms. She has published 25 SCI cited journal papers. In addition, she holds 15 patents.