What is Yin and Yang? Let's look at the Book of Changes first. The Book of Changes is about Yin and Yang. On the surface, the Book of Changes is a book about divination, but in fact there is a very profound philosophy in the Book of Changes, that is, the philosophy of Yin and Yang. The philosophy of Yin and Yang in the Book of Changes laid the foundation of China's whole Yin and Yang culture. Therefore, we should study the health-preserving culture, and we should learn the health-preserving culture. First of all, we should understand the theory of Yin and Yang in the Book of Changes. We know that the Book of Changes is composed of the word "Yi", a word "Day" and a word "Month". The sun is above and the moon is below. That is to say, the Book of Changes expresses the movement of Yin and Yang in the universe, and the movement of this day and month produces the changes of spring, summer, autumn and winter, cold and heat, and day and night, that is to say, the movement of the universe produces the gasification of Yin and Yang. Therefore, the Book of Changes emphasizes that the movement of all things is the movement of Yin and Yang, including our lives, and our life activities are also the movement of Yin and Yang. Therefore, the Book of Changes says that "the density of heaven and earth is the alcohol of all things", that is to say, at the beginning of that chaos, it was full of vitality, and then it was gradually divided into Yin and Yang Qi, so Yin and Yang were both virtuous and rigid. In other words, human life is also caused by the movement of Yin and Yang, so what is Yang? We say that everything that is sunny, extroverted, bright, rising and warm belongs to Yang; Then everything with its back to the sun is defensive, gloomy, descending, cold and cloudy. From our human body, it is the same, the head is yang, the feet are yin, the body surface is yang, the five internal organs are yin, the six internal organs are yang, the five internal organs are yin, the qi is yang and the blood is yin. In other words, Yin and Yang are divided into Yin and Yang, and everything in the world is the movement of Yin and Yang, especially our life.

So this yin-yang movement is constantly in balance, so what do we say is the balance of yin and yang? Let's take a look at this beautiful Taiji diagram in the Book of Changes. Taiji diagram is the epitome of the balance of yin and yang. This taiji diagram consists of yin fish and yang fish. What does this mean? It means that both sides of yin and yang are constantly changing, constantly changing. This change is that the yang is born and the yin is destroyed, and the yin is born and the yang is destroyed. The anode is yin and the cathode is yang. Therefore, the balance of Yin and Yang is seen in the embrace of Yin and Yang, Tai Chi and the embrace of Yin and Yang, which embodies a three-dimensional balance of Yin and Yang. This taiji diagram, we say, why not use a straight line, split it in two, and use an S line? You see, the S-line used in the middle of Taiji diagram shows that the balance of Yin and Yang is a dynamic balance, and it is a balance in the transformation of Yin and Yang. This is called dynamic balance. Then this balance is manifested as the balance of yin and yang gasification in nature and the balance of yin and yang essence in human body. If yin and harmony are balanced, then this person must be full of qi and blood, energetic and healthy in five internal organs. So we say that a person's face, face, our face, if the face is rosy, bright and luminous, it means that his five internal organs must be healthy. Therefore, the five internal organs are healthy and radiant, so the real beauty, the real health beauty, must exercise, and must be the health of the five internal organs. Then this kind of beauty from the inside out is the real beauty, which is better than any kind of cosmetics. The appearance of any kind of high-grade cosmetics is not as beautiful as the natural beauty of human health, so we say that the five internal organs are healthy, the qi and blood are sufficient, and the yin and yang are balanced, so people look good.

If the yin and yang of the human body are balanced, it must be vigorous vitality, good physiological instinct, high psychological endurance, a body that can eat and sleep, a good complexion, a happy mood and a good spirit. Such a person shows that he has five internal organs and a balance of yin and yang. Then his life, his balance of Yin and Yang, his emergency ability and his ability to adapt to bad situations are good. Moreover, it has strong endurance to fatigue and strong resistance to common diseases, so the balance between yin and yang is very important.