199 1 to 1994 studied for a master's degree in environmental health at the Institute of Environmental Medicine, Tongji Medical University, and obtained a master's degree in medicine. 1998-200 1 studied for a doctorate in occupational hygiene and environmental hygiene at the Institute of Environmental Medicine, Tongji Medical College, Huazhong University of Science and Technology, and obtained a doctorate in medicine. In April 2003, he entered the postdoctoral mobile station of Guangxi Medical University. June 2003: 5438-1October 2003: 065438 Director of Medical Science Experimental Center of Guangxi Medical University.