Regarding Lan Wangji breaking the rules and bringing alcohol to Wei Wuxian.
This isn't new! He already did it in Arc 1.
In fact, ever since the moment he brought him into the Cloud Recesses, he started bringing him Emperor's Smile from Caiyi, because he wants to make Wei Wuxian as happy and content as much as he can considering all the limitations him and Wei Wuxian had been warned about by the cultivation world.
(Wei Wuxian can't go outside, can't write, can't draw, can't use powers or arts of any kind to anything, can'd have access to books)
We already saw how Lan Wangji broke some of those (like taking him out and bringing him alcohol) and soon we'll see some more hehe~
Just like in the cave where he injured 33 elders, the rules are second to keeping Wei Wuxian well. Same with the pact he made with the cultivation world. He's cautious, but he never meant to imprison Wei Wuxian, he meant to save him and keep him alive and feeling guilty as it is for always rejecting him and not standing by his side as much as he could, he puts Wei Wuxian's well being as a first priority, relying on his high reputation to guard him (but at the same time risking it too).
Wei Wuxian is aware of all that Lan Wangji is doing for him and how it goes against the CR rules and against the pact. Every now and then he mentions it to poke him, sometimes in a passive aggressive way (like, "how come you punished me back then and got mad at me when you do it yourself??") and sometimes really just being surprised at the change Hanguang Jun made.
(Also at this part from Arc 2, PLEASE DON'T PAY ATTENTION TO THE BUNNIES PART, SCRATCH THAT, HE DOESN'T KNOW ABOUT THEM LMAO SORRY, I MISSED THAT DETAIL)
Anyways, yeah, Lan Wangji always keeps Emperor's Smile for Wei Wuxian :D
At the moment of this part, LWJ is on one end very happy to see the progress Wei Wuxian suddenly made at wanting him to stay, but at the same time he's so tired and hurting from his scars that you can see in his entire body language and manner of speech that he's really out of patience he now normally keeps for Wei Wuxian, and kinda really wants to return to the Jingshi.
REALLY THE TIMING OF YOU DECIDING TO GET CLOSER SUCKS, WEI WUXIAN
Really, look how Wei Wuxian is literally allowing himself to sit in front of him now as opposed to arc 1, acting on flirty and HINTING HARD
And Lan Wangji?? SUPPRESSING ALL THE GAY FEELS CAUSE WHAT CHOICE DOES HE HAVE AT THIS POINT WITH HIS DAMN LOW SPIRITUAL ENERGY AND SCARS HE CAN'T LET WEI WUXIAN KNOW ABOUT?? TT_TT
Also one final important note: