《徐霞客游记·楚游日记十二》
打听后知道由垫江铺往东北走十里，有个龙洞很奇异，它正是我仰慕而要去游览的地方，但没蕙狄就在此地。
问知由垫江而东北十里，有龙洞甚奇，余所慕而至者，而不意即在此也。
After inquiring, I learned that ten miles northeast of Dianjiangpu was a very strange Dragon Cave, which was exactly the place I admired and wanted to visit, but Hui Di was not there.