A Mu's classic line should be:

"In fact, God is also a human being, but he did something that people can't do, so he became a god."

A Mu said this line twice, the first time with Tuohai, who had not yet shown his skills and played a foil role.

The second time, that is, the climax of the story, A Mu wanted to take his sister to a hotel, and met Tuohai's girlfriend with other men, telling Tuohai that the relationship between them was tense and they fought.

This leads to the conclusion that Tuohai saw his girlfriend with his own eyes and chose to join the team in despair.