Qi Jun, Associate Chief Physician of thoracic surgery, Master of Medicine, Member of Esophageal Disease Group of Thoracic and Cardiac Surgery Special Committee of Chinese Medical Association, Member of Chongqing Thoracic and Cardiac Surgery Special Committee. He has studied in the Cancer Hospital of Chinese Academy of Medical Sciences. Rich clinical experience and skilled surgical skills, especially in minimally invasive thoracoscopic surgery for lung cancer, esophageal cancer, cardiac cancer, mediastinal tumor and other chest benign and malignant tumors, as well as standard surgical operations such as extended radical resection of tumor, lymph node dissection, and comprehensive treatment of chest tumor.