Dr. Yu Guo is a professor of surgery at the First Affiliated Hospital of Sun Yat-sen University who is engaged in the surgical treatment of hepatobiliary system diseases and the development of nanomedicines for malignant tumors. Dr. Yu Guo is the editor of various surgical and molecular biology journals. In the field of nanomedicine,his research is focused on improving the distribution efficiency of nanoparticles by active targeting technology. He has received several provincial academic honors in Guangdong Province for his contributions to clinical medicine and basic medical research.