Chen Shou once worked in Shuhan. After the death of Shu Han, he was recruited into Luoyang and worked as a writer in the Western Jin Dynasty. Before that, there was a draft of the Three Kingdoms. At that time, Wei and Wu both had histories, such as Yu Qian's Wei Lue and Zhao Wei's. These three books are regarded as the basic materials of Chen Shou's reasoning, but Shu Han has no historical records, so he collected them himself and only got fifteen volumes. However, due to the work of a historian, this book was finally written. Therefore, the history of the Three Kingdoms is the product of cultural reintegration after the split of the Three Kingdoms. The History of the Three Kingdoms was first circulated as Wei Zhi, Shu Zhi and Wu Zhi respectively, and it was not until the sixth year of Xianping in the Northern Song Dynasty (1003) that the three books were merged into one volume.