Professor, Chief Physician, and Doctoral Supervisor. Currently serving as Vice President of Peking University Cancer Hospital, Deputy Director of the International Cooperation and Exchange Department, and Deputy Director of the Internal Medicine Teaching and Research Office. Current positions include Secretary-General of the Clinical Oncology Expert Committee of the China Medical Women's Association, Chairperson of the Youth Committee of the Chinese Society of Clinical Oncology, Vice Chairperson of the Patient Education Expert Committee, and Standing Committee Member of the Gastric Cancer Expert Committee; Standing Committee Member of the Gastric Cancer Professional Committee of the Chinese Anti-Cancer Association, Vice Chairperson of the Cancer Supportive Therapy Committee, Chairperson of the Gastric Cancer Prevention and Control Expert Committee of the Beijing Cancer Prevention and Treatment Society, and Vice Chairperson of the Clinical Nutrition Expert Committee of the Beijing Medical Doctor Association, among others.