According to the most fundamental knowledge of the Immortal Cultivation World, once a demon tastes human flesh, it can no longer maintain a breath of pure Qi. No matter what method is used, it cannot be disguised, nor can the turbid Qi generated by eating humans be purged; the moment they open their mouths, a foul stench can be smelt from several meters away.
Yet, when An Mingli and Bi Yu, husband and wife, spoke, there was no trace of turbid breath whatsoever, easily proving that they had never eaten a human.
The disciples of Baimang Mountain were all counting on Liu Ya to devise a strategy. Liu Ya thought for a moment, a fierce glint in his eyes as he said, "The two of you have cultivated for ten thousand years, and while you may not have eaten humans in the lower realm, surely you've killed humans? I bet you've frequently crossed paths with righteous cultivators of the lower realm! Since you are demons, stop putting on a show—the demonic stench on you can never be washed away!"
Chapter 4678