Sun Bin's idea was to use the inferior horse of Tian Ji against the superior horse of Wang Qi, the superior horse against the inferior horse of Wang Qi and the inferior horse of Wang Qi, so he won the race with 2:/kloc-0:.

This is a very important strategic story in China's military history. In fact, Sun Bin's plan was very simple, and he won the biggest victory at the least cost. Perhaps many people don't know that this story has a great influence on China's military. The result of this story inspired generations of military strategists and became a classic case in military history.

This story also contains profound mathematical principles. This principle is very simple to say, in fact, it is to compare the minimum number and the maximum number between the size comparisons of numbers to maximize the intermediate number. This situation often occurs in series. Through the calculation of series, we can get how to choose and use the optimal value.