Rong Lizang found that his master was avoiding him.
At first, he thought that they had been unable to touch it because the fairy world was too far away from the demon world, farther than the mortal world and the underworld. Later, he realized that this was the master's intention, so he could not find the master no matter what he did. It was not until he was seriously injured and fell into the mountain that the master rescued him, that he saw the master again.
But he still couldn't catch the master's clothes, not even a hair.
Ironically, it was himself who first wanted to never see each other again in this life.
Motto: Don't let waiting become a regret