《资治通鉴·汉纪·汉纪二》
韩信派人暗中打探消息，得知陈馀不采纳广武君的计策，高兴异常，因此便敢率军径直前进，在距离井陉口三十里的地方停下来宿营。
韩信使人间视，知其不用广武君策，则大喜，乃敢引兵遂下。未至井陉口三十里，止舍。
Han Xin sent someone to secretly gather intelligence. When he learned that Chen Yu had rejected Guangwu Lord’s plan, he was overjoyed and dared to lead his troops straight ahead, stopping to camp 30 li from Jingxing Pass.