Don't skulk around unnoticed
Xi Zirui needs to hold on to his own pieces carefully. This game has multiple players, and he doesn't know if they're only operating within the rules of this world, or if they have memories back that can muddy the whole thing.
It's not in his best interests to tell Bai Mi he's willing to help her achieve her goals, at least not yet.
He needs to know more about what she plans to do, and for that he enlists Han Yu's help.
"That kind of thing is beneath this King," he says, completely straight-faced while adjusting the collar and chains above his robes.
Xi Zirui gives him a pointed look.
Han Yu raises his cuffed wrists. "I've begun to see these as a sex thing, and therefore, not beneath me."
Whatever helps him sleep at night.
In theory, what Xi Zirui needs from him is very simple. He needs him to proposition her.