The protagonist Yuan Dan and Duan Wu had an unclear relationship in junior high school. Yuan Dan transferred schools in the third year of junior high school due to his parents' divorce. He met Duan Wu in his sophomore year of high school elsewhere, and the two became classmates again. However, their relationship was not just as simple as classmates. They confirmed each other's thoughts, and they had the same mind and became boyfriends. Their younger brothers, Yuan Xiao and Duan Luo, also secretly fell in love with each other, and finally the four of them faced each other calmly. The full text is based on the square difference formula written by Yuan Dan to Duan Wu on the first day of the new year as a clue.
Purpose: Based on the thoughts, feelings and psychological activities of Yuan Dan and Duan Wu's reunion after a long absence, it shows the beauty of youth and the unique romance of boys, allowing students who are studying to feel the brilliance of life and their beautiful longing for the future.