Fox Demon: Destiny Across Three Lifetimes.

Summary

Li Changqing identifies and treats Madam Wang's illness using the Heaven And Earth Creation Mirror, which reveals a blood parasite causing her suffering. As he channels magic, Madam Wang experiences intense pain but ultimately the parasite is destroyed. After a violent bout of vomiting, she begins to recover, aided by a Blood Elixir. Grateful, her family expresses their thanks, but Li Changqing urges them to avoid formalities. He then questions them about the source of her illness, revealing it to be a blood gu, a dangerous poison from an evil demon, which had gone undetected.

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