The Three Caos in the history of ancient Chinese literature referred to Cao Cao, Cao Pi, and Cao Zhi during the Three Kingdoms period. The Three Cao's were a famous literary group in the history of Chinese literature. They were known as the "Three Cao Brothers". Their literary works had their own characteristics. Cao Cao's literary works were themed with military and politics. Cao Pi's literary works were themed with politics and history. Cao Zhi's literary works were mainly poetry and prose, and he was known as the "Poet Fairy." The works of the Three Caos had a profound influence on the development of Chinese literature and became one of the important representatives in the history of ancient Chinese literature.