Wei Ying lets himself feel miserable right up until Lan Zhan stumbles off again. But then he's up, hurrying after his friend. "Lan Zhan!" The don't leave me behind is implied in the somewhat frantic tone.

He scurries right up to his friend and latches onto his shoulder to lean on him a little. A source of familiarity, even if his friend is so very drunk still. And someone has to keep the Lan out of too much trouble, might as well be Wei Wuxian.

He forces himself to breath with more care until his heart-rate settles and the shakes smooth out, and takes the chance to really look around now.

"Where are we going?" He doesn't expect an answer, but he'll still ask it. And he'll use various names for Lan Zhan until he gets a reaction.