Cao Ang is the oldest son of Cao Cao. When Wan Castle is attacked by Zhang Xiu, this dutiful son gives Cao Cao his horse to escape. Soon after Dian Wei launches his last defense against the invading forces, Cao An Min lends his fine horse to Cao Cao and is killed. Wounds had already been inflicted on the horse, and an arrow had already pierced Cao Cao's right arm. During the escape the horse was struck in the eye by an arrow and toppled over, to which Cao Ang offered his own horse to his father who rode on. Cao Ang was then killed in a volley of arrows.