The Evil Qi in Huang Yueli and Li Moying's bodies wasn't obtained from them actively absorbing the Devil Qi from the outside world, but from the Evil Qi that was directly absorbed from Saint Iniquitous Shadow's cave dwelling.
This kind of energy was still different from Devil Qi.
Furthermore, the Evil Qi that they absorbed was extremely large and Li Moying was even in a coma for a few months because of it, almost causing a huge war between Sacred Phoenix Clan and Cloudy Qilin Clan.
Their practice of the Iniquitous Shadow Secret Manual was not so much refining the energy between heaven and earth as releasing the Evil Qi stored in their dantians.
To put it bluntly, they had never used Devil Qi to cultivate at all.
