"The Aberrant Demon is an extremely special existence; our cultivators' spiritual power can't harm it, which means that even the lowest-ranking Aberrant Demon is untouchable to cultivators below Divine Transformation, unless they have special means."
"That's not the most terrifying aspect of Aberrant Demons, though. They can possess human bodies and control their actions without the host realizing it—they believe these actions are their own will."
"To deal with an Aberrant Demon, one must either be a Divine Transformation Cultivator or possess special energy. Chu Ning was able to scare that Aberrant Demon away because he has the power of Earth Fire."
For an alchemist to have Earth Fire is not considered unusual; Xie Jingxing did not suspect Chu Ning of anything and took it as a coincidence.
"An Aberrant Demon enhances its strength by consuming the flesh and blood of the Human Race and even the Demonic Race; the stronger the consumed, the more power the Aberrant Demon gains."