When Ziwei was conscious, she was already in this world. She didn't know how she became a ghost, why she had to wander in the world, and she didn't know why she possessed each individual body. Before she met Qisha, she had already experienced several lives.
This little monster that suddenly appeared made her feel that she was cared about. She took care of Qisha like a mother and sent her to the Immortal Sect. However, she retired after her success and continued her wandering in this world, reincarnating from life to life, not knowing where she was going.
After Qisha aspired to the Heavenly Way, he always felt that there was a missing piece in his heart. He didn't know what was going on. Siming told him to look for it at the root, so he went to look for it and found Ziwei. As a result, she found that her sister was wandering like this because someone was doing something wrong. He wanted to help her end this state.
Ziwei: Why are you looking for me?
Qisha: I want to repay you
Ziwei: You have done your job well, there is no need to waste time on me anymore.
Qisha:... Sister, I just want to be by your side, don't drive me away (┭┮┭┮)
A big sister who only wants to be stubborn, smart and reasonable but lacks a sense of integrity VS a straight-ball puppy who is too rude to talk about
Intention: People always have to experience a lot before they discover what is most important.