Sun Xiujing, a Doctor of Medicine, is the chief physician of the gastroenterology department at Beijing Friendship Hospital. Dr. Sun has been engaged in molecular mechanism research on atrophic gastritis and gastric mucosal intestinal metaplasia and is committed to improving the diagnostic accuracy and treatment effectiveness of early gastric cancer. In recent years, Dr. Sun has published 18 SCI papers as the first author or corresponding author, with 129 citations and an h-index of 11. She has spoken at international conferences multiple times, participated in the writing of four professional books on gastroenterology, and served as the project leader for five national and provincial-level projects in the past five years. Dr. Sun has participated in peer reviews of over 10 articles from different journals. She has been engaged in clinical and basic research on atrophic gastritis and gastrointestinal metaplasia, dedicated to exploring diagnostic and treatment methods for early gastric cancer. Her team mainly studies the role and mechanism of ketone bodies exacerbating gastric mucosal intestinal metaplasia, providing theoretical and experimental support for understanding the risk of gastric mucosal lesions caused by ketogenic diets and exploring relevant preventive measures, with strong scientific significance. Dr. Sun is skilled in diagnosing and treating digestive system diseases and local resecting gastric lesions or tissues under endoscopy. With an annual outpatient volume of over 4,000 and the treatment of more than 200 patients with early gastrointestinal cancer every year, she has accumulated rich clinical experience and advanced skills. At the same time, she has strong scientific exploration ability and academic innovation capabilities. In addition, Dr. Sun is good at collaborating with others with excellent communication and expression skills. c