Wang Xiaolin, Ph.D., tutor of master students. Former Deputy Chief Physician of Urology Department of Tianjin General Hospital, and now Chief Physician and Professor of Urology Department of Tianjin Huabei Hospital, a million-dollar financial aid unit. He is also a director of Chinese Medical Association, vice chairman of urology branch of Chinese Medical Association, member and standing member of internal medicine branch of Chinese Medical Association, member of expert database of medical accident technical appraisal of Chinese Medical Association, and editor of China Medical Journal. He has been engaged in urology and male infertility for a long time and has accumulated more than 20 years of clinical experience. He has deep attainments in urology and male infertility. He is especially good at male infertility, male reproductive organ plastic surgery, erectile dysfunction and microsurgical treatment of male reproductive system, and has accumulated rich experience, so he is known as "male reproductive plastic surgery expert".