Zhou Yuqing, a senior high school student, met transfer student Xu Lanzhou by chance in the library and was attracted by his focus on reading the Book of Songs. The two got acquainted because of their shared literary hobbies. They gradually got closer, but neither of them clearly expressed their feelings. After many years, Zhou Yuqing, who became an editor, reread the letter while sorting out old things, and then understood the full meaning of "Lan Meng Zhi Zheng", and realized that what he had missed was not only a relationship, but also the possibility of changing his life.
