Mu Xiyang has a sunny appearance and can chat with everyone but is not very close to anyone. She is lonely, but she also loves and enjoys solitude. Cheng Chao, a senior in the third grade of high school, has a bright and handsome appearance and is a popular figure in the school. When Cheng Chao was delivering something to his grandfather, he met Mu Xiyang, who was playing chess with his grandfather. From then on, Cheng Chao opened the door to Mu Xiyang's loneliness step by step, and Mu Xiyang also gradually accepted from rejection and then got used to the excitement brought by Cheng Chao. This also foreshadowed Mu Xiyang's subsequent sense of loss and gap.
