Deng Feng, chief physician, professor and doctoral supervisor of Orthodontics Department of Stomatological Hospital affiliated to Chongqing Medical University. He is the candidate for the first academic and technical leader in Chongqing. He is also a member of the Orthodontics Committee of Chinese Stomatological Association, a member of the National Dentistry Prevention and Control Steering Group, the chairman of the Stomatology Committee of Chongqing Medical Association, and the editorial board of chongqing medical, Journal of Prosthodontics and Journal of Dentistry Prevention and Control.