"What? That kid is here again? F*ck him, he's messing with us!"
They cursed angrily, but they did not want to let their chance slip away. When they managed to gather their forces and returned to the Void Realm, the kid saw them and immediately ran away.
That happened a few times in a row. They were about to lose their minds.
When they made up their minds to camp at the entrance, nothing happened for the next few days. When the kid finally appeared at the entrance, he took a step, looked around, and left.
They had no choice but to withdraw their troops and try to ambush him.
However, that kid was too crafty. They could not catch him in an ambush.
The following period was a complete nightmare for them. They had no idea when that kid would appear. He might show up when they were meditating or cultivating, or even when they were taking a dump.
"He's here!"
"He's here again!"