Xiang-Sheng Fu, MD, PhD, Professor. He graduated from Southern Medical University in 2009. He works as a professor in the digestive endoscopy center of Affiliated Hospital of North Sichuan Medical College. He has experiences in the diagnosis of gastrointestinal diseases and endoscopic minimally invasive treatment. In recent years, he has been engaged in the research of gut microbiota and colorectal tumor immunity. He was funded by many foundations such as general program of National Natural Science Foundation of China. He published more than 40 papers indexed in SCIE, such as International Journal of Cancer, Oncoimmunology, Cancer Immunology Immunology, Cellular and Molecular Life Sciences. He served as editorial board member of Oncology Letters, and reviewers for more than 20 Journals including Clinical Cancer Research, Biomedicine, Theoretical Advances in Gastroenterology.