Guan Yu (160–220), general allied to Liu Bei, deified as God of War, a famous general at the end of the Han Dynasty era (206 BC – 220 AD), was one of the best known historical figures in ancient Chinese history. Guan Yu was highly skilled in military affairs and his loyalty has been highly praised for generations.
Guan Yu was a major character in "Romance of the Three Kingdoms", a semi-historical novel written by Luo Guanzhong at the end of the Yuan Dynasty period (1279–1368). Stories of Guan Yu's exploits were romanticized in the novel.