On Qin, on Qin's transgressions. The original text is divided into three parts: upper, middle and lower. It is contained in the first volume of New Book and the fifty-first volume of Selected Works. It is also recorded in Historical Records of Qin Shihuang, Historical Records of Chen She Family and Hanshu. Lu Xun's evaluation of Jia Yi's On Qin is "a magnificent prose of the Western Han Dynasty" (Outline of China Literature History), which is magnificent and beautiful. From the internal point of view, narrating historical facts, exaggerating extravagance, rich in materials, talking in succession, concise, and few opinions. From the outside, it is full of ups and downs, dissolute words, rigorous argumentation and beautiful language. Write Qin Xing, arrogant; Write Wu Qin, plummeting and falling rapidly; Finally, the final decision is to start the full-text argument. Reading such an article not only makes people understand the lessons of history, but also makes people understand the reasons for the rise and fall of the country, and is impressed and admired by the majestic momentum of the article.