@metsuar Mo Xanyu sacrificed his own soul and forced Wei Wuxian's soul in his body.
Lan Zhan recognized WeiWuxian because the song he was playing on the mountain was composed by Lan Zhan and only him and Wei Wuxian knows that song.
Jiang Cheng recognized Wei Wuxian because he controlled Wen Ning and is scared of Dogs.
Lan Zhan recognized WeiWuxian because the song he was playing on the mountain was composed by Lan Zhan and only him and Wei Wuxian knows that song.
Jiang Cheng recognized Wei Wuxian because he controlled Wen Ning and is scared of Dogs.