Driving Cao Cao to Cut His Beard and Cast Off His Robe at Tong Pass
Ma Chao joined Han Sui and others in revolt to avenge his father, and at Tong Pass led his crack cavalry in a fierce charge on Cao Cao’s camp; Cao Cao fled the rout in disarray and, it is said, was forced to cut off his beard and shed his robe to avoid being recognized — a rare moment of humiliation in a lifetime of war. The victory spread the fame of "Ma Chao the Splendid" across Guanzhong, and later drove Cao Cao to use a scheme of estrangement expressly to break Ma Chao from Han Sui.