After collecting the beast crystals from the defeated hounds, Quinn had suddenly recived the message about obtaining exp. He had figured out that the exp he just gained must have been from Peter.
It was the only thing that made sense, and would also explain why the system had used the word "Share". This meant one thing. That Peter was close. He didn't know how or why Peter was down here as well, but if he had to guess Peter probably chose to come down here to follow him.
It was strange though, even though the system was able to pick up the exp points from Peter. Quinn was still unable to sense Peter's presence like he could when he was above ground.
"What's wrong?" Fex asked as he could see it looked like Quinn was deep in thought.
Quinn wanted to go searching for Peter. He didn't know how far away he needed to be for the system to pick up the exp, but the fact that he even got experience points in the first place, meant right now he was fighting other beasts.