Rebirth was not Wei Wuxian's will, it was forcibly pulled back by Mo Xuanyu's sacrifice. Come back, come back, he doesn't want to have anything to do with Qianchen at all, Qianchen is too sad, and everyone wants him to die, he naturally won't identify himself, he can stay as far away as he can.
But after learning that Jinling was the son of his senior sister, he couldn't stop asking about the world without waves, and his sister's death was a pain for his whole life. Later, he was recognized by Lan Wangji in the process of saving Jinling in Dafan Mountain, and was recognized by Jiang Cheng after saving Jinling from the Cannibal Castle. Wei Wuxian was recognized because he saved Jinling. After that, there was a picture of Lan Zhan protecting Wei Wuxian all the way, and Jiang Cheng grabbing Wei Wuxian all the way.
Wei Wuxian felt that the people who cared about him in his previous life were already dead, and he didn't know Lan Zhan's affection for him. He asked himself if he didn't have any unforgettable friendship with Lan Zhan during his lifetime. Although they have been classmates, adventures, and side by side, they have always been like falling flowers, and they have come and gone in a hurry. And because of their nature, their relationship must not be good. Lan Zhan is the son of the Gusu Lan clan, which means that he must be both "elegant" and "positive", which is quite incompatible with Wei Wuxian's temperament. Most of the time, Lan Zhan was very disgusted with his frivolity and casualness, and his evaluation of him was the same as that of others: evil qi was raging, and righteousness was insufficient. After the defection, the beam of the knot is not small. After getting along for a while, Wei Wuxian slowly fell in love with Lan Wangji, and cautiously tried to be together after confessing in Guanyin Temple.