《太平广记·卷四十五·神仙四十五》
草堂东面有一个小洞，洞高八尺，荒芜不堪，草蔓遮蔽，好像是毒蛇隐藏的地方。
草堂东有一小洞，高八尺，荒蔓蒙蔽，似蛇虺所伏。
 To the east of the hut was a small hole, eight feet tall, desolate and unbearable, covered by vegetation, as if it were a place where poisonous snakes hid. 