Zhang Jianzhong, chief physician, Professor, MD. He was the executive vice president of the school of Stomatology, Shanghai Jiaotong University and the chief physician of the Department of Prosthodontics, the Ninth Peoples Hospital, Shanghai Jiaotong University. Visiting researcher, Department of Dentistry, Osaka University, Japan, received doctors degree in dentistry, Osaka University, Japan. He has won the second "noble ethics" award of Shanghai Second Medical University, the second prize of teaching achievement of Shanghai Education Committee, and the second prize of teaching achievement of Shanghai Second Medical University. In the past 40 years, he has treated a large number of difficult cases of Prosthodontics, accumulated rich clinical experience, and had a deep theoretical research in the reconstruction of teeth occlusion.