It's a skill that unfortunately remains useful in their world. In so many ways, Mingjue is lucky to be who he is. He wishes - fiercely - that he could help other sects act more noble, rather than careless as the Jins do. But the Nie sect started out different from the very beginning.

So he can only continue to be true to himself.

"Would you like to eat in the gardens?" Two and two.

He follows though. Instead of taking a seat while the other cooks for him though, he remains standing and works beside him. Firmly, silently, announcing they are not master and servant.

The admission of memory...makes sense. "Find me if you can, if you are unsure of what is real and what is false." A pause. "Xichen taught you songs of clarity in an effort to help me." Thus the music which was turned against him.