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Xu Chen and Xia Zijin grew up together and were neighbors. Xu Chen liked Xia Zijin since he was a child, but when he was 7 years old, Xia's father moved away because of work. From then on, Xu Chen missed Xia Zijin all the time. But ten years later, Xia Zijin reappeared in Xu Chen's life, but Xia Zijin actually forgot Xu Chen... What kind of sparks will they collide with when they meet again, and what kind of youth stories will happen between them and their good friends...