The story of all plants and soldiers happened in A.D. 383. Fu Jian, a former Qin Dynasty, sent troops to attack Jin, and the striker was defeated by the Jin army in Luojian, Shouchun, Anhui. Fu Jian visited Shouchun City, saw the Jin soldiers in a neat formation, and saw the vegetation on Bagong Mountain. He thought that they were all Jin soldiers, and he felt afraid because he had met a strong enemy.
Every tree and grass is an enemy soldier, which comes from Fu Jian in the Book of Jin. The original intention is that when people are very frightened, they regard every tree and grass on the mountain as enemy soldiers. Later, it is used to describe people who are suspicious when they panic.
According to this historical fact, later generations have created the idiom that the wind is full of fear and the grass is full of soldiers. This idiom is used to describe the fear of losers.