He already knew before leaving the valley that even if he was in Taoyuan, he was just a common man in this world. So he fell into the dusty web of the world and kept company with the mortal world. He is willing to do it just because of him. He thought: What is honor? It was Jiang He Sanqian who met you.
"If I could live my life over again, I would like to prevent that massacre... What about you?"
"I think I would choose that again."
Intention: a sudden whim
