Hao Ren had a shocking conjecture after he read the notes.
Firstly, the Ancient Magic Empire not only used advanced biochemical technology but also divinity when it created the demon hunters, who were also the Ancients. Hao Ren believed that the magic empire in the past did not have enough ability to harness the real power of the gods. What they were exposed to should be the product of the further decay of this power. Nonetheless, it was enough to show that the mage emperors were indeed carrying out studies on divine power. They called their research outcome the Divine Cells, which they could manipulate and reproduce.
Secondly, their research turned out to be under God's decree!