What is the most precious thing in human life? When discussing this proposition with his disciples, the sages said: human life depends on breathing. Think of the words of the sages and tell the truth-qi is the treasure of human life. Neijing also said: "Qi is the foundation of human beings." Those who get qi are born, those who get qi stagnation are sick, and those who lose qi die. "Qi" was called "Qi" in ancient times (later called "Qi" or "innate Qi"). "Play" is innate, intangible and contains information and energy; "Qi" is acquired qi, and tangible qi is the evolution of "Qi". Yi Men Fa Jin said, "When qi (individual) gathers, it will take shape, but when qi (individual) disperses, it will take shape." Shua is not only the basic unit of the universe. It is also the most basic substance that constitutes the human body and sustains human life, so the small universe of the human body is essentially the same as the big universe of heaven and earth.

Therefore, as long as people master breathing correctly, they can realize communication and integration between people and the universe through breathing. Qi and blood in the human body are two sides of "handsome", so there is a saying that "blood is the mother of qi and qi is handsome of blood" Nourishing qi and blood in health preservation is to raise "play". The "essence, qi and spirit" of the human body is also the expression of "play" in the three levels of the human body.

Meridian is also a form of existence in human body, so meridian has the properties of information and energy (light, wave, heat and other physical properties); Meridian is not only one of the running channels and repositories of "communication" in the human body, but also the main home for the human body to accept "communication" in the universe. The essence of regulating meridians is to communicate information, mobilize and replenish energy, and with sufficient information, the human body can enhance its immunity and self-repair ability. Therefore, it is called human medicine storehouse. "Lingshu Jing" emphasizes: "A man can decide life and death, deal with all diseases, and adjust the deficiency and the excess."

"Breathing for health" is the three treasures of "essence, qi and spirit" of human body. Starting from practicing "play", we should adjust body, qi and mind through correct breathing methods to improve and strengthen the operation of "play" in human body.