Prof. Xinqiang Liu graduated from the School of Stomatology, Peking University and completed his clinical trainings at Chang Gung Memorial Hospital in Taiwan, Case Western Reserve University School of Dental Medicine in the United States, and Kyungpook National University School of Dentistry in South Korea. He was a former director of both Orthodontics Department, Affiliated Hospital of Qingdao University and Orthodontics Research Department, School of Stomatology, Qingdao University.

Prof. Xinqiang Liu is an editorial board member of the Chinese Journal of Orthodontics and also a reviewer for several prestigious journals including European Journal of Orthodontics and the Angle Orthodontist. He has published over 60 research articles, contributed to 5 specialized books, and completed 7 research projects. He was experienced in training as a lecturer for Invisalign in the Asia Pacific region and expert member of the Invisalign Technology Innovation Committee.