The name was chosen because I couldn't think of a name and has nothing to do with the text.
The setting is that Xuefeishuang turns into a wandering soul after death, and can see Yi Fuling's vision at the same time. After the plot ends, he is reborn and returns to the middle of the plot, using known information to try to save everyone.
When she is a wandering spirit, she usually follows Yu Huanzhen or Feng Tianyi. But if she didn't see something that Yi Fuling didn't see, she wouldn't know.
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Conception: