During the Three Kingdoms period, Lu Su was Zhou Yu's favorite, and Zhou Yu was very knowledgeable. He took a fancy to Lu Su and highly recommended him. Zhou Yu recommended Lu Su to succeed him. Zhou Yu told Sun Quan this way: We are now fighting against Cao Cao, and Liu Bei is near the public security. We should guard the border with a bright future. Lu Su's wisdom and talent are competent enough. Please ask him to take my place. After I die, there is nothing to worry about.