C318 Five thunder arrows

What period of time did cerebral monster survive?

If the information I have obtained is correct, then the cerebral monster must belong to the Paleogene.

It was a period far beyond the era of the Nine Sovereigns, a period even longer than the Primordial Era.

In that era, it was known as the archaic era, and it was also known as the old days.

From what Yang Jiusheng had said