Li Fen, Chief Physician, Doctoral Supervisor, Deputy Director of the Cardiac Center, Chief Physician of the Department of Cardiology He has been engaged in clinical practice, scientific research, and teaching in the field of pediatric cardiovascular medicine for over 30 years, mastering advanced technologies representative of the specialty's cutting-edge level. He possesses a high level of diagnostic and therapeutic capability for complex and difficult diseases within the specialty. He performs over 500 cardiac interventional procedures annually, including more than 200 pediatric radiofrequency ablation procedures and over 50 pediatric permanent pacemaker implantations. He has made pioneering and significant contributions to the development of multiple areas within this specialty. He currently serves as Deputy Director of the Shanghai Institute of Congenital Heart Disease, Member of the National Cardiovascular Disease Expert Committee, Standing Member of the Pediatric Branch of the Chinese Medical Doctor Association and Chairman of the Cardiovascular Disease Professional Committee, Member of the Cardiac Rhythm Society of the Chinese Medical Doctor Association, Chairman of the Pediatric Cardiac Rhythm Working Committee of the Chinese Society of Pacing and Electrophysiology, Deputy Head of the Cardiovascular Group of the Pediatric Branch of the Chinese Medical Association, and Editorial Board Member of journals such as the *Chinese Journal of Pediatrics* and the *Chinese Journal of Cardiac Arrhythmias*. His primary focus is on basic and clinical research in pediatric cardiovascular diseases. He has published 116 papers as first or corresponding author, including 28 indexed in SCI. As the first completer, he has received awards such as the Soong Ching Ling Pediatric Medicine Award, the Third Prize of the Huaxia Medical Science and Technology Award, the Third Prize of the Shanghai Medical Science and Technology Award, and the First Prize of the Pudong New Area Science and Technology Progress Award. As the second completer, he has received the First Prize of the Shanghai Science and Technology Progress Award. He has successively led five general projects of the National Natural Science Foundation of China, one sub-project of the Ministry of Science and Technology's Key Special Program, key projects of the Shanghai Municipal Science and Technology Commission, international cooperation projects of the Shanghai Municipal Science and Technology Commission, and key projects of the Shanghai Municipal Education Commission. Overseas Training: He previously studied at the Cardiovascular Center of Boston Children's Hospital in the United States, where he received training in interventional diagnosis and treatment techniques for pediatric congenital heart disease and radiofrequency ablation techniques for pediatric tachyarrhythmias. Main Research Directions: Interventional diagnosis and treatment of congenital heart disease, radiofrequency ablation treatment for various tachyarrhythmias (paroxysmal supraventricular tachycardia, paroxysmal ventricular tachycardia, paroxysmal atrial tachycardia, premature ventricular contractions, premature atrial contractions, etc.), pacemaker implantation treatment for bradyarrhythmias, and pharmacological treatment for various arrhythmias.