The moment Du Mengyun came in, Chen Mobai sensed that his Pure Yang True Qi had grown a little more active than before.
Combined with Hong He's identity, he had already guessed that the person before him was probably also a member of the demonic path.
But he did not know what secret art she had cultivated. Under his Spiritual Sense, there was actually not the slightest flaw, and he could not detect even the faintest trace of demonic qi.
However, Chen Mobai trusted his Pure Yang Scroll. After all, this Spirit Transmutation Cultivation Technique did not have much use in other aspects, but against demons, it was absolutely top-tier.
But very soon, Chen Mobai discovered something else.
Aside from his Pure Yang True Qi, the World Destroying Millstone, which had at some unknown point fused into his mind and spirit, also surfaced at this moment.
One of the Three Thousand Demonic Daos' faces on the World Destroying Millstone aimed at Du Mengyun and suddenly lit up.
This made Chen Mobai very puzzled.
After all, Hong He was also a Demonic Cultivator, so why had the World Destroying Millstone not reacted?
Did it look down on Hong He? Most likely.
As Chen Mobai pondered, within the face of the World Destroying Millstone that had lit up, another ray of Mysterious Light shone and merged into his mind and spirit.
Supreme Heart Demon!
One of the Three Thousand Demonic Daos. After mastering it, one could transform into countless incarnations, manipulate heart demons, and possess bodies to seize them.
Although there was only one simple sentence, Chen Mobai quickly thought of the Incarnation Demonic Sect that had triggered a great calamity here in the Sky River Realm.
Thirty thousand years ago, a Supreme Outer Demon had descended, splitting into countless heart demons.