There is a saying in "Six Towers", "Birds of prey will strike and fly low and fold their wings; Beasts will fight and bow to their knees; When a saint moves, he must have a foolish color. "
Although this passage by Jiang Taigong is easy to understand, it should be combined with reality. Animal behavior is easier to understand. They need to ambush to avoid being discovered by their prey in advance, and they also need to accumulate strength and launch a sudden attack to kill them.
Saint's behavior is difficult to understand, we might as well combine Jiang Taigong's own behavior to analyze:
Before Jiang Taigong met Zhou Wenwang, straight hook fishing seemed stupid and unreasonable at that time. But it was this irrationality that created an opportunity for him to answer King Wen and set foot on the Western Zhou Dynasty. It is the smart ministers who choose the smart master, and the smart master gets the smart ministers.
At this time, showing others stupidity can be seen as creating opportunities for yourself.
Before the invasion of Zhou, he had divination, which was a sign of catastrophe. In addition, the sudden wind and rain scared the ministers. Only the squire smashed the tortoise shell and urged the invasion. In the end, Konoha defeated the Shang army and marched all the way to pacify the Shang and Zhou Dynasties.
Under the social conditions at that time, everyone believed in destiny. However, divination is intense. Even if the information flow was slow at that time, I'm afraid the news could easily reach Shangjun. After Shang Jun learned of Jiang Taigong's behavior, he must think that featuring disobeyed destiny and rushed to send troops will be defeated, so he relaxed his vigilance and made Zhou Jun's advance more smooth.
This stupid performance can be seen as letting competitors relax their vigilance.
Saints often have actions that ordinary people can't understand, but it is these actions that enable their goals to be successfully achieved.
Playing dumb can let your opponent off guard or attract the attention of the target.
Being stupid means being smart, waiting for an opportunity. Unlike playing dumb, stupidity is often reflected in surprise.