Perhaps our youth is pure and flawless, without any mottled marks. We are used to seeing people coming and going, and we envy the two people in the novel who live in two places, and the last person is lonely. But even so, whenever I think back to those lush youthful years, it always brings a little joy, a little bitterness, and that unforgettable period that fills my heart... Today is a story about her and him, which seems far away but really happened beside me, seems very close but is still a hundred feet away from me. Everything in the future is unknown, but Tiantian stayed in high school for three years...