He stares at the hand and reaches out with his own to take it. It's a greeting he hasn't quite gotten used to but it is certainly easier then bowing. But once they are done with the shake, he will circle his arms so that he can bow with his own introduction.

"Wei Wuxian. No need to apologize. We've been occupied with other things."

He sits up straight and realizes he should probably act like an actual host. Not something he is used to either. "Would you like some tea?"