《史记·三十世家·魏世家》
如果取道河外，背向大梁，右边是上蔡、召陵，与楚军在陈城郊外决战，秦国又不敢。
若道河外，倍大梁，右上蔡、召陵，与楚兵决於陈郊，秦又不敢。
If they took the Hebei route, turned their backs on Daliang, with Shangcai and Shaoling on their right, and had a decisive battle with the Chu army outside Chencheng, Qin would not dare to do so.