Sun Yanjun, Cardiothoracic Surgery, Chief Physician, Doctor of Medicine. With 20 years of experience in pediatric cardiothoracic surgery, proficient in all surgical procedures for congenital heart disease, as well as open surgery and minimally invasive thoracoscopic techniques for pediatric general thoracic diseases. Participated in over 25,000 cases of congenital heart disease surgeries and performed over 3,500 cases as the primary surgeon. Success rate for Grade III and IV surgeries exceeds 98.3%. Skilled in communication, coordination, and training of cardiothoracic surgery teams. From July 2012 to December 2013, served on a medical aid mission to the Second People's Hospital of Kashgar Prefecture, Xinjiang, where he trained the entire local cardiothoracic surgery team, ushering in a new era of routine cardiac surgeries at Kashgar Second Hospital. Expert on the Shanghai Red Cross Bo'ai Medical Assistance Project Review Committee. Member of the General Thoracic Group, Pediatric Surgery Branch, Chinese Medical Association. Youth Committee Member of the Cardiovascular Surgeons Branch, Chinese Medical Doctor Association. Member of the National Minimally Invasive Cardiovascular Surgery Committee of China. Reviewer for *Pediatric Investigation* journal. Editorial board member of the national medical college "12th Five-Year Plan" organ-system integrated textbook. Published 5 SCI articles, co-edited 2 "12th Five-Year Plan" textbooks, and published 3 professional translations. Specializes in: Surgical treatment of simple and complex congenital heart disease across all age groups, including neonates, infants, and children. Minimally invasive axillary lateral incision surgery for simple congenital heart disease. Thoracoscopic minimally invasive surgery for simple congenital heart disease in adolescents and larger children. Pediatric minimally invasive thoracoscopic surgery for general thoracic and certain cardiovascular diseases, including: congenital pulmonary airway malformation (CPAM), pulmonary sequestration, thoracic/mediastinal tumors, pectus excavatum/pectus carinatum, esophageal/bronchial cysts, diaphragmatic eventration, vascular rings, double aortic arch, patent ductus arteriosus, long QT syndrome, etc.