Chen Xianzhao, Chief Specialist of Radiotherapy Department, Chief Physician, graduated from the Medical Department of Sun Yat-sen University of Medical Sciences and has been engaged in radiotherapy clinical work for 43 years. In early 1983, he created the first Radiotherapy Department in Hainan Province, and took the lead in carrying out 3D-CRT, IMRT, and SBRT in Hainan, witnessing the development of Chinas radiotherapy from two-dimensional to three-dimensional and then to precision radiotherapy, and treating a total of 10,000 patients with various kinds of tumors, as an external professor of the Medical College of Hainan Province, and an expert of the Expert Pool of the Hainan Provincial Health Bureau, and served as the director of the Radiotherapy Department of the Hainan Provincial Peoples Hospital for 12 years, and the director of the Radio Wave Knife Center of the PLA 187th Hospital for 4 years.