《太平广记·卷三百七十一·精怪四》
阳曲距太原州城九十里，窦不疑经过的道路是古战场，狐狸，鬼火聚集，没有人居住。
阳曲去州三舍，不疑驰还。其间则沙场也，狐狸鬼火丛聚，更无居人。
Yangqu was ninety li away from Taiyuan Prefecture. The road that Dou Buyi took was an ancient battlefield where foxes and ghost fires gathered and no one lived there.