Cao Mao (241-260), formally known as the Duke of Gaogui, was the fourth emperor of the state of Cao Wei during the Three Kingdoms period of Chinese history. He was a grandson of Cao Wei's first emperor Cao Pi. Described as intelligent and studious, Cao Mao made repeated attempts to seize back state power from the regents Sima Shi and Sima Zhao, but failed. He was killed in an abortive coup d'etat against Sima Zhao. He was received the posthumous title of a duke instead of an emperor.
Read more about Cao Mao: Family Background and Accession To The Throne, Reign, Attempted Coup Against Sima Zhao and Death, Era Names, Family