[ Zhongli is quiet a moment before there's something of a slight smirk tickling the corner of his mouth. He could explain it to Childe, but they aren't "friends" anymore, so what reason is there to explain himself when Childe is teasing him? ]

Yes. How could I miss the opportunity to see rare stones that may not exist in Teyvat? This is a rare chance that is truly hard to come by. [ he moves to walk by Childe now, only adding to his words as their shoulders barely brush against each other in the process. ] Anything beyond that, I am sure you would rather discover on your own.

[ As much as he would love to say he's really simply ogling shiny items like he would back home, it's not quite the case here. ] I am heading to the next shop now. There are so many to visit, an old man like myself needs to get a head start.

You are welcome to come, otherwise I will not be offended if you choose to continue with your own agenda. [ It doesn't seem as if Zhongli is tired with Childe, angry at him, or anything of the sort. It's merely typical distance between mere acquaintances, like when they first met in Liyue.

Polite, cordial, and brief in public. There's no sense holding Childe and his time hostage. ]