《宋书·志·卷二十七》
后面走遇的人，看见一老妇守着蛇说： 刚才赤帝子经过，杀了它。 
后人来者，见老妪守蛇曰： 向者赤帝子过，杀之。 
The person who walked behind and met her saw an old woman guarding the snake and saying: Just now, the son of the Red Emperor passed by and killed it.