Tang Zhaoyou, academician of China Academy of Engineering, honorary director of Institute of Liver Cancer of Fudan University, dean of Zhongshan Hospital affiliated to Fudan University, director, professor and doctoral supervisor of liver surgery. Jia Fan, liver tumor surgeon, academician of China Academy of Sciences, dean of Zhongshan Hospital affiliated to Fudan University, director of liver surgery, professor and doctoral supervisor. They have a certain cooperative relationship in the academic field.