"Uh, Lan Zhan, where did you get that?" he asks, having completely failed to notice his brother, again. 

"Jiang....."

He passes out before he gets to 'Wanyin.'

Alarm??? Concern??? 

It's not hard to figure out that Lan Zhan meant Jiang Cheng which, okay, he was not paying attention to anything other than Lan Zhan, plausible he could've missed that. But. Now Lan Zhan is unconscious??? What the fuck was IN that???

He reluctantly puts on (1) layer of clothing and wrangles Lan Zhan into same before getting up to find his brother and ask what the hell he just gave Lan Zhan. 

Jiang Cheng is holding another cup and also a big-ass gourd of alcohol when Wei Wuxian finds him. He blinks muzzily at his brother. 

"What the hell did you give Lan Zhan???" 

He holds up the gourd. "This stuff. S'good." 

He snatches the gourd and sniffs it. It smells like ordinary wine. "Where did you get this?" 

He makes an unsteady gesture in the general (very general) direction of the destroyed Wen building. 

"You fed Lan Zhan suspicious Wen alcohol? How much of this stuff have you had to drink?"

"Dunno. A bunch? You guys are loud and I don't wanna go far enough away I won't be able to tell if you get attacked or whatever, there's only so much I can deal with sober." 

Wei Wuxian has to concede the point. Not that he can find it in himself to be sorry. Still. "Lan Zhan had one cup and he passed out!"

Jiang Cheng actually giggles. "What a lightweight!" 

Lightweight: is conscious again. The world is very blurry and bouncy feeling and for a while it doesn't occur to Wangji to do anything other than lay on the ground with his eyes just barely cracked open.

Then he realizes that he wants his Wei Ying, of course, where has he gone?

It takes Wangji about five minutes to sit up and then establish that Wei Ying isn't there. Disastrous. Catastrophic.

He notices Wei Ying's voice (!) coming from somewhere and wanders haltingly towards it.

"Lan Zhan! You're awake! How do you feel?"

"Lan Zhan?" 

He steps closer and cups Lan Zhan's face with one hand. 

WOW

"Lan Zhan, are you okay???"

He tries to suck on Wei Ying's fingers, misses, and ends up sort of nuzzle-kissing his palm instead.

Satisfactory.

"--Lan Zhan," he half-sighs, half-laughs, relieved. Probably he's at least okay-ish if he's being adorably sappy. 

Pleased humming sound. Yes, he is Lan Zhan. This is very correct, everything is correct.

Except the fact that they aren't having sex makes things not as correct as they could be. Wangji will try to communicate this by biting Wei Ying's thumb.

--giggle. "Lan Zhan, are you still drunk?"

Oh, is being drunk what this is. Hhhuh. Will that make Wei Ying want to fuck him more or less, he really isn't sure.

"If that is good," he settles on for his answer.

Wei Ying is giggling really hard now. "Lan Zhan, Lan Zhan, how is this possible? You only had one cup! It shouldn't be possible to get drunk on one cup of wine! I wouldn't expect you to be able to hold your liquor very well, growing up all rule-abiding in the Cloud Recesses, but this is another thing entirely! How is everything about you this adorable???"