Nannan Ji, attending physician, MD, who graduated from Chuanbei Medical University, is good at IMRT and VAMAT for solid malignant tumors, such as nasopharyngeal cancer, esophageal cancer, lung cancer, breast cancer, rectal cancer, urogenital cancer and etc. She is a member of the Hainan Cancer Prevention and Treatment Society of Immunology and Precision Therapy, and a member of the Hainan Cancer Prevention Society of Radiotherapy. She is also the PI of some provincial scientific research projects.