"You're a guest of the Xianzhou Luofu, no matter how involuntarily. It's our duty to ensure you're taken care of. Under the circumstances it seems I'm best suited to carry that out, so really, thanks are unneeded." This is a very polite conversation despite Jing Yuan insisting there's no need to be formal. It's fine, he's old and allowed to be a hypocrite occasionally.

"But you are very welcome for the boba tea. There's also a startaro variety, which... well, I can't recommend it but Diviner Fu is quite fond of it. I'll have to bring her a cup to sweeten her mood when we head over there." After all he's going to be very late for their meeting and bringing her a problem, he can imagine she's going to be a little irritable.