《水经注·卷三十六》
大汗淋漓爬山苦，柱杖小憩呼伴侣。床降小贩多苦劳，七里险路左肩熬。
看都濩泚，住柱呼伊，庲降贾子，左担六里。
It was hard to climb the mountain sweating profusely, and I had to lean on my staff and call out to my companions for a short rest. The vendors on the bed had worked very hard, and their left shoulders were sore after seven miles on the dangerous road.