In the instant Luo Hou and Di Jun released their spiritual power, Yang Mei naturally felt this power equivalent to a Primordial Chaos Great Luo Golden Immortal.
This completely took him by surprise, and he instantly realized that something was amiss.
These two Chaotic Beasts were cultivated by him with countless efforts, even using a part of Demon God's essence blood, changing the origin of the Chaotic Beasts.
It took a lot of Chaotic Beasts to cultivate these two, reaching the power level of a Primordial Chaos Great Luo Golden Immortal.
Moreover, during this process, Yang Mei suppressed the spiritual wisdom of these two Chaotic Beasts for better control.
He feared that a truly sentient Primordial Chaos Great Luo Golden Immortal level Chaotic Beast would not be under his control.
This method obviously had its flaws; Chaotic Beasts with the body of a Primordial Chaos Great Luo Golden Immortal were quite weak when facing a true Primordial Chaos Great Luo Golden Immortal.