When Xia Houdun (Dun) crusaded against Lyu3 bu4, he was struck by Lyu3 bu4' s lieutenant Cao Xing, and shot his left eye. Xia Houdun pulled out his arrow and even gouged out his eyeballs. He said an eternal famous saying "the blood of father, essence and mother should not be abandoned", then ate his own eyes and rushed up to kill Cao Xing. Both armies were surprised. Since then, Xia Houdun has often been appointed as a pioneer in the front, killing the enemy and breaking the array, charging ahead and making great contributions.