The love of two people, the silence of two people, falling in love but not being together, hiding their hearts for seven years, for the girl's promise to the boy, "If we break up, and you find the right person, you must get married before I get married, because I want to see you happy first, then I can be happy." The boy got married, and in the end, he realized that they still loved each other, but it was already too late. In the end, one was in the south and the other was in the north. With that unrequited love, the world was far apart.