Let me get this straight. Zhang Xun and his forces of 60,000 people were in a battle or conflict for so long that they ran out of food, ate the horses, and the procedure to resort to cannibalism, first starting with the woman, then the old men, then the young boys, and then from there picking the weakest of the group that was left for who would get eaten next until the force was down to 400 survivors? And they considered it acceptable losses?