Li Tianxiao: professor, chief physician, M.D., PhD supervisor of Zhengzhou University (since 2010); He is an expert enjoying special allowance of the State Council and Henan's health science & technology leading talent. He is the vice-chairman of Interventional Therapy Committee, Chinese Society of Radiology, vice-chairman of Chinese Neural Intervention Society, and associate editor of Chinese Journal of Interventional Radiology (Electronic Edition) and Journal of Interventional Radiology. He is mainly busy with the clinical and basic research of interventional diagnosis and treatment of cerebrovascular diseases and peripheral vascular diseases. He has published more than 200 papers, and has undertaken 4 provincial and department-level research projects with the research fund of more than 4 million yuan. Field: training and research of clinical medical skills (for interventional therapy).