He gives Wei Wuxian a wide berth, backing away from where he's walking to, more focused on Lan Wangji and his past self.  At least for the moment, Wei Wuxian seems in a stable mood.  He'll revise this opinion if he starts maniacally laughing or spewing smoke.

Warily, he sheathes his sword.  He can still dodge or parry with the sheath if one of them lunges at him, and not having it out will make that less likely.

He slowly lowers his blade but doesn't sheathe it. 

Wei Wuxian finishes cleaning the baby and cuddles him and blows a raspberry against his tiny baby tummy. He's also managed to remove most of the congee from himself, which reveals that his neck is almost entirely purple with crescent-shaped bruises. 

He is confused about the bruises for about three seconds, once he notices them.  Then he makes a face and redoubles his effort to instead focus on the other two. 

It's almost tempting to sympathize with him about that but if he were ever going to sympathize with his evil future self about anything it wouldn't be in front of Lan Wangji. 

Wei Wuxian gets the rest of the congee off of himself and climbs out of the water. 

He looks at future Jiang Cheng and sighs. 

"Two Jiang Chengs. This is going to be so complicated. What will Uncle Jiang and Madam Yu think?" 

"Seriously? He killed you and that's your first concern?" 

"Well, he didn't kill me me, and it's not like he didn't have good reasons." 

"There are no such things as good reasons for that!" 

"What happened in the other future?" he asks quietly.

He swallows. 

He looks away. 

"Lan Zhan came to stay with us at the Burial Mounds and he--died. During the Siege. And I--killed a lot of people about it. And then for the past four years there was a sort of detente. Nobody sticks their nose in, nobody sticks their nose out." He snuggles the baby closer. "But it didn't happen, now, everyone's fine. Shijie's fine. And I'm not--I had to use demonic cultivation to deal with the Wens but I'm done, okay, I'm done." 

He puts an arm around him.

He leans against Lan Zhan gratefully. 

"I can't promise that I won't use it again if an emergency comes up that merits it. But I know my limits now. I won't use it and use it and use it until I lose control and someone dies. Someone who wasn't supposed to. Things are different now." 

He thinks about this.  Can he trust Wei Wuxian to be telling the truth?

Either way he's not going to kill him in front of his...?  Lan Wangji.  Or.  Where did he even get a baby.

"I'm not going to kill you unless you kill them, Wei Wuxian."  He gestures at his companions.  "You know that you're the greatest risk to them.  Remember that before you try anything with Demonic Cultivation."

"Fuck you." 

"I know." He looks at the child he's holding. "But there are things more important than my life or yours or even Lan Zhan's." 

Squeeze.

Snugglean. He hooks one of his ankles around Lan Zhan's. 

He very much wants to stop being in a conversation with those two before he has to learn more about where those bruises came from.  

Unfortunately, the only person left is his past self.  "What are we going to do about there being more than one of me?"

"If the answer isn't killing you then I don't have the first fucking clue." 

"Are you going to go back to Cloud Recesses?"  he asks, then pauses.  "...Considering that Wei Wuxian is not currently corrupted with any sort of dark influences, I'm going to need to update Zewu-jun."

- so apparently Jiang Wanyin saw fit to misdirect Wangji's brother with the completely unfounded claim that Wei Ying is a demonic menace to society. Wangji is furious.

"Then leave," he growls.

"Er, if you're going to update Lan Xichen on the situation, you should probably tell him his brother eloped and he has a nephew now." 

"Gladly," he says to Lan Wangji.  He'd rather not be here longer than he needs to be.

He considers the baby, and their age at this point in the timeline.  "I'm guessing that's Wen Yuan?  Are you going to change his name to Lan Sizhui this time too?  I'll need a name to tell Zewu-jun.  Also an explanation for where you got him."

"Wen Ruohan killed his parents while he was having a tantrum about the Xuanwu. We, uh, haven't decided which surname to give him this time."