Know white and keep black and know black and keep white.

Knowing white and keeping black comes from Laozi's Tao Te Ching. Laozi said: "It is the world wind to know its white and keep its black. For the world, Changde is not dangerous, and it is endless. "

What is white and what is black? White people are happy for the sun; Black people are wrong and suffer from yin. Generally speaking, white represents brightness, prosperity, innocence, sobriety and happiness, while black represents darkness, decline, confusion, failure and pain. Knowing the white and knowing the black, knowing in the dark, can keep the black, not discouraged, not angry, not publicity, so it can be an example for the world. This is Changde, which is the necessity of the existence and development of things. Following this Changde, things can continue to develop, even infinitely. This is Lao Tzu's letting nature take its course, and it is also what we often say: guilty conscience, ignorance, and even resignation. Regarding white and black, it is further extended that benevolence and righteousness are also white, and evil is also black.

You should also know black and keep white. Know your own shortcomings, but stick to and carry forward your own advantages, be confident and don't be discouraged; Know that there is darkness, but believe that there must be light; Know that there are failures in the struggle and believe that there will be success in the struggle; I know that life is painful, but I believe that life is also happy.

There is neither absolute black nor absolute white, but somewhere between black and white, so we need to know about gray. Half black and half white are called gray, sometimes black and sometimes white are also called gray. Often no one is perfect, so gray is also a normal and natural state, so is the great man with great good and evil, and so are we ordinary people.

Empty is white. Empty is an automatic and wise abandonment. It is the "flying white" in Chinese painting, the "gas eye" in Huangshan water painting and the "confusion". Life is too light to bear too much white and black, love and hate, gain and loss, success and failure, so learn to keep white in the dark, black in the white, empty in the black, and gray in the white.

There is no black without white, and vice versa. Therefore, according to the laws of the universe, all colors are natural colors, and all colors have their own reasons and strengths.

Black and white are yin and yang, yin and yang come from the Tao, and negative yin and yang are always the avenue of the universe.