Xu Hao was originally Gu Zhe's mortal enemy. After Gu Zhe's death, he transformed and became Gu Zhe's great benefactor.
After Gu Zhe was reborn, he wanted to repay his great benefactor Xu Hao.
He did three things.
The first thing is to stop him from fighting.
The second thing is to be a classmate with him.
The third thing is to urge him to study.
Xu Hao: What good deeds did I do in my previous life to meet you, a big enemy?
Gu Zhe: What a great thing.
Xu Hao: I would really like to thank you...
Intention: Self-reliance and self-reliance