Zhang Jibei is a little girl who is obviously not very old, but always looks like a little old man. She has obviously not experienced time, but she has a maturity that does not belong to her.
But her maturity is exposed to everyone, but only Zhou Zhennan. She will behave like a child to Zhou Zhennan, even though she is still a little girl.
She would also act coquettishly towards Yao Chen, although she would always be stopped by Zhou Zhennan and held in his arms
Zhou Zhennan is a porcelain monster. He can never open bottle caps. He can never lift heavy objects. He can't even lift a child (younger brother), but he can always pick up Zhang Jibei.
Zhang Jibei is a double-standard dog. She doesn't like to eat porridge, drink medicine, don't like others to hug her, and even doesn't like to cook. But she can always change for Zhou Zhennan
Purpose: Childhood sweethearts accompany each other and redeem each other