Chief Physician, Professor, and Master's Supervisor. Specializes in pulmonary vascular disease (pulmonary embolism, pulmonary vasculitis, pulmonary arterial hypertension), lung infection, bronchiectasis, bronchial asthma, and chronic obstructive pulmonary disease (COPD). Dr. Sun graduated from the 8-year clinical medicine program at Peking Union Medical College with an MD. He is currently a Chief Physician and Master's Supervisor at the Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital. He serves as a member of the Pulmonary Embolism and Pulmonary Vascular Disease Group of the Respiratory Branch of the Chinese Medical Association, a youth committee member of the Respiratory Rehabilitation Professional Committee of the Chinese Association of Rehabilitation Medicine, a member of the Pulmonary Vascular Disease Group of the Respiratory Branch of the Beijing Medical Association, and an editorial board member of the Medical Journal of Peking Union Medical College Hospital. To date, he has published over 40 articles in core domestic and international journals, including over 20 SCI articles as the first or corresponding author, with a total impact factor exceeding 60.