Deputy Administrative Director of the Department of Radiation Oncology, Peking University Cancer Hospital, Chief Physician, Doctoral Supervisor. Academic Appointments: Chair of the Radiation Oncology Committee of the China Geriatric Health Association, Vice Chair of the Lymphoma Committee of the China Association for Promotion of Health Science and Technology, etc. Principal Investigator of projects under the National Key Research and Development Program, sub-projects of the Beijing Municipal Science and Technology Commission, and the Capital Health Development Research Special Project of the Beijing Municipal Health Commission. Led and participated in over ten national multi-center Phase II-III randomized controlled trials. Specialty: Radiation therapy and comprehensive treatment for gastrointestinal tumors, urological tumors, lymphoma, and melanoma.