Laozi's Tao Te Ching: The world is not weaker than water, but if the strong can overcome it. It's not easy. Soft is better than strong, weak is better than strong, and the world knows it but can't do it. Therefore, the sage said, "Being defiled by the country means being the master of the country. If the country is nameless, it is called the king of the world. " If it is that opposite. There is nothing weaker than water in the world, but nothing that attacks the strong can beat it, so water is irreplaceable. Soft is stronger than hard, weak than strong. Nothing in the world is unknown, but no one can do it. Therefore, the sage said, "Only when you can endure the humiliation of your country can you be called a monarch;" If you can bear the disaster of the country, you can become the king of the world. " Positive words seem ironic. This passage can be said to be the representative of Laozi's thought of "taking softness as strength, defeating strength with weakness, and braking with static".