《水经注·卷十一》
水往东南流出山间，流经城中，有一座古碑叫伏白君碑―太白君是郎山君的长子。
东南出山径其城中，有故碑，是太白君碑，郎山君之元子也。
The water flows from the mountain in a southeasterly direction and passes through the town, where there is an ancient tablet called the Fu Baigun Stele—Baigun was the eldest son of Langshan Jun.