Os Indomáveis Temporada 1 Episódio 31

Jin Zixuan invites Wei Wuxian to come to Jin Lings birthday. While Wei Wuxians preparing present for Jin Ling, Jin Zixun comes and gives Wei Wuxian troubles. To that scene, unexpectedly, someone comes. At the end, because of something that interrupts Wei Wuxian, Wei Wuxian killed who he shouldnt kill. Who would that be?