" To Our Lost Youth " was a novel that mainly narrated the love story between the protagonists Ruan Guan and Zheng Wei in high school. Through recalling the good times of the two in high school, the novel showed the innocence, beauty, regret, and growth of youth. The novel tells us that youth is a short and precious period. People should cherish time, treat every moment seriously, and spend their youth without regret. In the novel, Ruan Guan and Zheng Wei experienced many twists and turns and challenges, but they always adhered to their love and finally realized each other's dreams and wishes. The novel also reveals that the innocence and impulsiveness of youth may leave us with many good memories, but at the same time, it may make us lose precious opportunities. In youth, we should seriously consider our goals and values, strive to pursue our dreams, and at the same time cherish everyone and every relationship around us.