Huang Shigong, a hermit at the end of Qin Dynasty, once gave books to Sean. See Historical Records: A Family Living in Hou Dynasty, but this statement was refuted by experts. In the early years of the Western Han Dynasty, Sean and Han Xin edited 182 art books and selected 35 books, among which there was no "three views"; When the Han Dynasty became emperor, the captain of the infantry continued to compile Sun Tzu's Art of War, and * * * collected 53 books, of which there was not a "Three Outlooks" until the reflection of the Three Kingdoms. In Wei Mingdi, Li Kang wrote "The Theory of Destiny", in which "Sean is burdened by Huang Shigong and has three views on his back". It can be seen that "Sanlve" was written late, from the end of the Eastern Han Dynasty to the Wei and Jin Dynasties.
The "three strategies" are divided into three parts: upper, middle and lower. The author advocates that "Shang Lue" is a literary talent, and should not be a traitor, emphasizing success or failure: "China is short of virtue" and judging contingency. Introduction shows morality, keeps safety and blames thieves and sages. Therefore, if Old Master Q can deeply understand the "Shang Lue", he can capture the enemy in Renxian; If you have a deep understanding of "Zhong lue", you can control the public; A deep understanding of "Xialue" can clarify the source of ups and downs and judge the discipline of governing the country. If the people and ministers know the "China Strategy", they can try their best to protect themselves. "It can be seen that this book can help readers to rule the country, unify the army and conquer the public. It is a military monograph with rich content and profound theory.