The fragrance of locust flowers spreads across the campus, and cherry blossoms cover the title page of the advertisement. Lin Zhixia used the pen as a medium to write down the chapter of youth with Jiang Wan - from the hot soy milk in the library to the high-speed rail tickets in another place, from the waves of the new book launch to the starlight in the laboratory. They worked side by side in their studies and dreams, turning the concerns of the two cities and the reconciliation after the quarrel into a long-lasting tenderness. This is a summer narrative about love and growth. When the pen was written, he was always by his side.