Liang Jia and Cheng Yu lived in a large courtyard. People in the courtyard said: Cheng Yu is the elder brother and wants to protect his younger sister.
In kindergarten, Liang Jia was a little girl and was often bullied by boys in the class. Cheng Yu would pull Liang Jia behind him to protect her every time.
In junior high school, a boy in the class wrote a love letter to Liang Jia, and Cheng Yu saw it. At night, Cheng Yu beat the boy.
In high school, Liang Jia said: "Cheng Yu, which university do you want to go to?" Cheng Yu said: "China People's Public Security University.
In his sophomore year, Cheng Yu went to the border area, and before leaving, he told Liang Jia: "When I come back, we will get married.
Purpose: Learn to love, learn to protect