Officer under Sun Quan. Instrumental in setting up the Sun-Liu alliance that led to victory at the Battle of Red Cliffs. He eventually became Zhou Yu's successor.
While Zhuge Liang is famous for his Longzhong Plan, Lu Su had also proposed a tripartite strategy to Sun Quan, advising him to conquer the Jing Province before waiting for the opportunity to strike the north.
Source: Sanguozhi, Book of Wu, Volume 9: The Biography of Lu Su