Every child dreams of meeting a "stone boy" who can play with us and help us improve our study and gain recognition. While growing up, especially after entering junior middle school, with further understanding of the surrounding world and the initiative to think about life, feelings of loneliness will well up in the hearts of the youth. In such a case, how to understand ourselves, to live with loneliness, to live in harmony with the world, and to be positive and work hard in loneliness matter a lot to our trust in the world and inward happiness. Focusing on growth in puberty, Lengthy Years of Puberty makes an in-depth discussion on and a witty interpretation of loneliness. It is based on the author's life experience and integrates folk tales into the story, in an effort to show the courage, confusion and loneliness combined in the youth's nature, as well as to exalt youthful vigor, friendship and kindness.