All of this is to preserve humanity, to keep the Taoist heart intact.
The reason Mo Hua's evil qi is so intense is because in an instant, he wiped out an overwhelming number of demon cultivators.
The death of these demon cultivators caused a massive accumulation of evil qi that couldn't be dispelled.
Not to mention among these dead demon cultivators, besides those in Qi Refinement and Foundation Establishment, there were also numerous Golden Core and even four Feather Transformation Realm Demon Heads.
Not only was the "quantity" of the evil qi sufficient, but the "quality" was also absurdly high.
Yet Mo Hua was merely at Foundation Establishment.
No matter how strong the "quality" of his divine thought was, he simply did not have a sufficient realm to bear the backlash of this evil qi on his Taoist heart and the erosion of humanity.
But this was actually not the root cause.
