"What is at a peak is certain to decline. He who shows his hand will surely be defeated. He who can prevail in battle by taking advantage of his enemy's doubts is invincible"

This quote by Cao highlights the principle of impermanence and the value of method in fight. Cao recommends that anything that reaches its peak is bound to decline, highlighting the idea that absolutely nothing is long-term and whatever goes through alter. He also cautions against exposing one's strategies or objectives, as this can cause beat. Instead, he recommends taking advantage of the enemy's doubts and unpredictabilities to get the advantage in fight. This reveals the significance of shrewd and strategic thinking in warfare. Cao Cao's words function as a suggestion to constantly be versatile and to use one's challenger's weaknesses to one's advantage.