Fanfan's book department is Fanfan's four major disciplines. The Four Seasons of Leaving Fan is an ancient book written by Yuan Lefan in Ming Dynasty, which combines personal experience and lifelong learning accomplishment. It is not only an educational book with virtue accomplishment, but also a family instruction book with the nature of persuading kindness. The book is divided into four parts: the study of life, the method of reform, the method of accumulating goodness, and the effect of modesty. In the book, Yuan Lefan tells us that he warned future generations with his own personal experience and a large number of real and vivid examples that fate can be changed through his own efforts, and he should do good deeds and be brave in atonement.