This is a long narrative that revolves around young love in high school. It tells the story of Lin Wei, a top academic girl, and Jiang Yi, an athletic student, who met by chance on a campus where Wutong Yeluo fell. They helped each other at the same table and developed a secret love. They quietly guarded the budding love through their shouting on the basketball court, their companionship during evening self-study, and their unsent but connected love letters. Faced with the pressure of high school study and the test of the college entrance examination, the two agreed to support each other and get admitted to a university in the same city. Subsequently, they experienced walking side by side in college, misunderstandings and reconciliations, the anxiety of meeting parents, persistence in postgraduate entrance examinations and career choices, and finally fulfilled their promises in the tempering of time, from campus lovers to marriage, raising their daughter Jiang Nianwei, and precipitating green love into a long-lasting happiness. The story uses the imagery of "summer night wind" and "unsent love letters" to connect the time trajectory from childhood to middle age, interpreting the true meaning of companionship, understanding and perseverance in love.
