Professor, Chief Physician, and Doctoral Supervisor. Specializes in the comprehensive and individualized treatment of tumors of the digestive system. Former Director of the Department of Medical Oncology at Peking Union Medical College Hospital. Her main research focus is on tumor diagnosis and treatment, particularly the application of molecular markers in tumor diagnosis, treatment, and prognosis. She has participated in national '863' and '11th Five-Year Plan' projects, as well as National Natural Science Foundation clinical research on advanced gastrointestinal tumors. She also leads and participates in clinical trials for new anti-tumor drugs.