A key that small could be anywhere..Wei Wuxian frowns as he realizes he probably won't be able to figure out his room for awhile.

When they enter the room, Wei Wuxian blinks a few times..reaches up and rubs his eyes to make sure he isn't dreaming or something and then drops his hands down so he can look again.

"How is this possible?" He really shouldn't question anything this world does considering how small he currently is. He wonders what his room will look like..he has a feeling if it is tailored to the person then it will be very much like Lotus Pier and that makes him just a little excited.