Prof. Wei Tang, studying and working in The University of Tokyo Hospital since 1993, has published more than 200 English papers until now. His research interests include intrahepatic invasion and metastasis of HCC, gastroenterological cancer, HCC, clinical pathology, metastasis, invasion, angiogenesis, chemotherapy, cancer drug targets, glycoprotein and tumor maker. In the research field of tumor marker for HCC, he devotes to promoting the Japan-China joint research projects in recent years, and has published a number of papers in this field.