There was actually a limit to the number of people that the trial could accommodate. Lin Wu had not discovered this before since there was no way to do that. He had only found it out recently when he asked the Emeraldine Sky Light Monk Ape about it.
He too didn't know and they ended up using beasts to test it. In the end, it came out that a little over 200 people could take the Sky Bright Daoist's trials at once.
Seeing this number, Lin Wu knew they would need a way to let the others stay here. The more they stayed the more Lin Wu could control them. He didn't just want to use the sky bright Daoist's trials to control them, but rather the entire forest.
He had several ways to do it that could be applied in various manners, but the main condition was that they needed to be in the forest.
"Those that want to stay, need to give their names so that I can inform the king." The Emeraldine Sky Light Monk Ape asked.