Research areas : early gastrointestinal cancer, endoscopic ultrasound (EUS), pancreatic and biliary diseases; Cutting-edge technology: EUS for precise diagnosis of pancreatic tumors and intramural lesions of the gastrointestinal tract; Areas of expertise: early esophageal/gastric cancer, pancreatic lesions, common bile duct stones; Academic highlights: Dean of the School of Digestive Health, Capital Medical University; Core value: Establishing standardized clinical pathways for early gastrointestinal cancer screening and minimally invasive endoscopy.