今非昔比 Jīn fēi xī bǐ (смешанная)

Shoved back to his nearly dying 17-year-old past self just after the siege in Burial Mounds (for god's sake he just wanted to rest!), Wei Wuxian had realized that (WAIT!) he needs to seize this opportunity to redeem himself and prevent bad things from happening again.
But disguising as a female demonic cultivator was surely not part of the plan.
An AU where Wei Wuxian chose to act behind the scene of the Sunshot Campaign without anyone knowing that he's very much alive and unknowingly widowing and pushing some ice-cold statue into unnecessary mourning.
"Excuse me, I didn't know that I am married!"