"He might be all the way in Nightless City."

"I would like to be able to take on Wen Xu and Wen Ruohan separately. I wasn't even the one who killed Wen Ruohan last time." 

“Mn. If they are in the same place, what will you do?”

"Draw one of them away if I can. If I can't--well, it depends on where they both are. If they're somewhere without a lot of innocents I have some ideas involving poison. If they're not...I don't know." He grimaces. "I won't--you'll be here to stop me if I try to do something overboard."

"I could help draw one out. It should be possible without appearing involved in their deaths."

"Or dying. You're not allowed to die any more than I am." 

"I have a good track record."

"Your track record in my timeline isn't any better than mine in yours." S Q U E E Z E

"I myself have not died even once." Squeezesqueeze. 

"Good. Do you want to find somewhere marginally more comfortable than a bloody stone floor to have reminding-each-other-we're-both-alive sex."

Nod. "Tell Jiang Cheng to leave us."

"You realize I'm right here and I can hear you, right?" 

Sorry, Wei Wuxian mouths over Lan Zhan's shoulder. 

"Please try to pick somewhere that has a negligible chance of killing you," he scoffs and zooms off. 

What an excellent use of Jiang Wanyin's time.

He scoops Wei Ying up off the ground and starts walking until he finds somewhere more comfortable than a bloody stone floor.

Oh look there's some fairly comfy-looking greenery. Moss and grass and such. Also neck nuzzles, those are very much present. 

Wei Ying will be very gently placed down on the comfy greenery, and then pounced upon. How fast can he take off Wei Ying's clothes while also biting his neck, let's find out.

Pretty fast! His prize is a shuddering and moaning Wei Ying. 

Oh good. He has already discovered lots of things that will make his Wei Ying shudder and moan, but there are probably even more out there to discover. Wangji sets himself to experimenting, like any proper scholar.

Important Experimental Data: 

-Having his wrists pinned above his head makes Wei Ying wriggle and tease, but pinning his wrists off to each side and pressing him down with his whole body makes him go limp and whimpery. 
-Marks are YES 
-Growling "mine" will consistently get a physical reaction 
-It is legitimately impossible to get Wei Ying to shut up in bed except by removing his capacity to speak, either physically such as with kisses or by overwhelming him so much even he can't find words. 

These are excellent results. He will exploit these new and exciting insights with great enthusiasm. How about pinning him down and then sucking him off? Wangji has no experience and it turns out to be difficult, but he is feeling very competitive. If Wei Ying gets to turn him into a puddle this way then Wangji wants to be able to do it too.

This produces a significant quantity of babble! Components of the babble, in order from greatest to least proportion: 

-Lan Zhan's name
-the word "fuck" 
-the word "please" 
-various non-word noises
-miscellaneous swear words
-"ah, I'm gonna--" 

Oh good, a Success. When he gets to that last one, Wangji digs his nails into Wei Ying's hips and hums approvingly.

He comes loudly and then lays there, panting, for at least a moment seemingly out of words. 

He is so proud of himself. His reward will be cuddling the wordless Wei Ying.