Once they were inside, Wukong made himself scarce to get the drop once things actually got started. They were scaring, he was reinforcing that there was no escape and dishing out physical pain.

Child's play really and it gave him some space away from Macaque a bit to refocus. He hated how much the other monkey was getting under his skin here. He wanted to go back to just not being bothered by anything. But he couldn't.