Guo Tu
Meanwhile, at Guandu, Yuan Shao's army led by Zhang He and Gao Lan failed to break through the enemy lines. Affected by the news of the defeat in Wuchao and rumors of Guo Tu making slanderous remarks about them, Zhang He and Gao Lan surrendered to Cao Hong and destroyed their weapons. Cao Cao's forces seized the opportunity to launch the full attack on Yuan's army. Yuan Shao's numerous armies were destroyed and much of his supplies were captured by Cao Cao. Yuan Shao himself fled north across the Yellow River with only about 800 cavalry, which was what was left of his army. Order was restored only when Yuan Shao reached the camp of his general Jiang Yiqu (), from where he gathered his straggling troops.