Wangxian (忘羡, Wàngxiàn) "Forgetting Envies" is a song that Lan Wangji composed for Wei Wuxian. The name itself is the portmanteau of Lan Wangji's and Wei Wuxian's courtesy names, which also forms the official ship name for Lan Wangji and Wei Wuxian.
The song was known first in Wei Wuxian's flashback to Dusk-Creek Mountain where he and Lan Wangji killed the Tortoise of Slaughter but were trapped in a cave as a result. Lan Wangji had prepared the song earlier, but only sang it once to Wei Wuxian.
The song was also the identifying marker that Lan Wangji recognised a reborn Wei Wuxian by on Buddha's Mountain.
Audio DramaThe song is written as a duet between Lan Wangji and Wei Wuxian. It served as the ED of the audio drama's Season 2.
编 曲：Windbell Project@Windbell_project
演 唱：吾恩@吾恩_5n_ 、余夏@朱强是个大吃货