"That guy" refers to the Monster Lord entrenched deep within the Misty Forest—a terrifying entity with a physique comparable to a mountain and power enough to shake the heavens. To reshape this land, this massive threat had to be dealt with first.
"Do you know its weakness?" Lu Chen asked, trusting that since Huo Yao had brought it up, she must already have a plan in mind.
"I’ve consulted the Mystic Scholar in the System Mall," Huo Yao said, pulling an aged parchment scroll from her space ring. "According to what is recorded here, the Monster Lord was not born evil. It was originally a Divine Beast that guarded this continent, but it was later corrupted by a mysterious Dark Power, which is how it became what it is today."
Chapter 340