Fang Xuanling was good at coming up with plans and Du Ruhui at making decisions, so people spoke of "Fang's plans and Du's decisions".
Tips
culture
He is the man in the legend behind 吃醋. When 唐太宗 offered him concubines, his jealous wife was told to accept them or drink poison. She drank the cup down, and it was only vinegar, 醋.
history
He helped plan the 玄武门之变 of 626 that put Li Shimin on the throne, served as chancellor for some twenty years, and led the team that compiled the 《晋书》 (Book of Jin).