Advanced. Ling Huanqiang, director of gastroenterology, chief physician and professor, director of gastroenterology of PLA General Hospital, doctor of medicine, chief physician, professor, doctor and postdoctoral tutor. In addition, he is the Chairman-designate of Digestive Endoscopy Branch of Chinese Medical Association, the Head of Diagnosis and Treatment Team of Esophageal Varices, the Deputy Chairman of Endoscopy Branch of Chinese Medical Association, the Chairman-designate of Digestive Endoscopy Branch of Beijing Medical Association, the Editor-in-Chief of Chinese Gastrointestinal Endoscopy Electronic Magazine, the Deputy Editor-in-Chief of Chinese Digestive Endoscopy Magazine, the International Committee of American Digestive Endoscopy, and the gie Editorial Board. In 2022, he was awarded the rank of professional and technical major general.