"Ah?" he asks, looking surprised except that his eyelids and eyebrows don't work while drunk the way they're supposed to, so his mouth sort of hangs open awkwardly for a moment, very uncharacteristic for an esteemed Lan such as himself.

"I have already caught Wei Ying," he protests, gently tugging at his hair. This is sound drunk logic, Lan Wangji doesn't think Wei Ying could possibly disagree with this.

But mostly it's just an excuse not to have to let go of him. It's a very flimsy one.