Dr. Xu is an assistant professor at Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University (PolyU). He received the PhD degree (Industrial Engineering) from The University of Hong Kong, and master degree (Systems Engineering) and bachelor degree (Automation) from Huazhong University of Science and Technology. He also earned a bachelor degree (Business Administration) from Wuhan University. Prior to joining PolyU, he was an Assistant Professor at Harbin Institute of Technology, Shenzhen, a Research Fellow at School of Mechanical and Aerospace Engineering, Nanyang Technological University, and a Research Assistant at Department of Computer Science, City University of Hong Kong. Besides, He also worked as an intern at Institute of Automation, Chinese Academy of Science.