Xu Dang accidentally lost hearing in his left ear while rescuing Yun Yi. Before that, he was the first gangster in City No. 2 Middle School. Later, he rescued Luo Yi, whom he had a crush on for five years. Because he was deaf, he put on a hearing aid and transferred to City No. 1 Middle School. She didn't know that he had a crush on her for five years, and he didn't know what she was. He fell from third in grade to last. In his senior year of high school, Luo Yi and his mother moved to No. 1 Middle School in M City and met him whom they longed for. He didn't want to jeopardize her future but guarded her silently. In the end, the two of them became friends in college, and their lovers finally got married.
Purpose: commemorate the past