《水经注·卷四》
《战国策》说：从前有一匹雄骏的千里马拉着盐车在虞坂上坡，背上套着车辕却迟迟不能前进，这里大概就是骏马受困的地点了。
《战国策》曰：昔骐骥驾盐车上于虞坂，迁延负辕而不能进。此盖其困处也。
The Warring States Strategies said: Once upon a time, a famous galloping horse pulling a salt carriage was going up Yu Slope, but it couldn’t move ahead for a long time even with the shafts of the carriage on its back. Here should be the place where the famous horse got stuck.