Yuan Shao 's numerous armies were destroyed and much of his supplies were captured by Cao Cao .
The morale of Yuan Shao 's army was drastically weakened and Cao Cao 's forces seized the opportunity to launch the full attack on Yuan 's army .
Yuan   's numerous armies were destroyed and much of Cao Cao 's supplies were captured Cao Cao   Cao .
The morale of Yuan Shao 's army was drastically weakened and Cao Cao 's forces seized the opportunity to launch the full attack on Yuan 's army .