Zhang's war theory has a certain theoretical height, covering a wide range of contents, and is closely related to actual combat skills. It is very helpful for futures investment. Interpreting market behavior with the main thinking will greatly improve retail investors. It emphasizes the execution and endurance of investors in the market, and captures the best opportunity to enter the market at the critical point of long and short positions, which conforms to the theory that prices run in the direction of least resistance. It is a way of trading by leveraging strength. This is a severe test for people who have no patience.