Chief Physician, Doctoral Supervisor, former Director of the Department of Dermatology at Peking University International Hospital. Graduated from the School of Medicine, Shandong Medical College in 1984, and obtained a Master of Medicine degree from the Department of Dermatology, First Hospital of Beijing Medical University in 1990. Served successively as a Resident Physician in the Department of Dermatology at Qilu Hospital of Shandong University, an Attending/Associate Chief Physician in the Department of Dermatology at Peking University First Hospital, and a Chief Physician in the Department of Dermatology at the Second Hospital of Shandong University. Engaged in clinical practice, research, and teaching in dermatology for over 30 years. Conducted dermatological research in Japan and the United States. Published more than 80 papers and reviews in Chinese and English, and contributed to 12 monographs in Chinese and English.