《新五代史·附录·四夷附录第二》
周世宗从干奎里乘龙舟，楼船战舰，首尾迤逦敷十里，到达益津关，降服守将，但河道逐渐狭窄，船不能前行，于是舍船从陆地进军。
世宗自乾宁军御龙舟，艛船战舰，首尾数十里，至益津关，降其守将，而河路渐狭，舟不能进，乃舍舟陆行。
Emperor Shizong of the Later Zhou dynasty took a dragon boat from Gan Kui Li, with warships following him in a long line of more than ten miles, and reached Yijin Pass. He took the defenders prisoner, but the river became narrower and narrower, and the ships could not move forward. So he had to abandon the ships and advance on land.