Cheng Lei, professor, chief physician and doctoral supervisor. Doctor of Medicine, JD.COM University, visiting scholar at Swansea University. He is currently the director of the Department of Otolaryngology of the First Affiliated Hospital of Nanjing Medical University (Jiangsu Hospital), the director of the Medical Quality Control Center of the Department of Otolaryngology of Jiangsu Province, and the deputy director of the Institute of Allergy and Autoimmune Diseases of Jiangsu Institute of Clinical Medicine.