(a) What is the half-moon mark? A white arc-shaped mark appears at the bottom fifth of the nail, which is the half-moon mark, also known as the small sun. The nail half-moon mark is the boundary between the yin and yang meridians, and is a representative of the body’s essence, so it is also called the circle of health. The development of the half-moon mark is influenced by nutrition, environment and physical quality. When the digestion and absorption function is poor, the half-moon mark will be blurred, reduced or even disappear. The condition of the meniscus shows information about the health condition of the body. (2) The role of the half-moon mark is said in Chinese medicine: the claw is the tendon’s flower and the remainder of the blood, the qi is not depleted to the liver for blood, the blood is not depleted to the kidney for essence, and the essence is not depleted to the bone for marrow. This is the origin of essence. The essence is also the location of the vital energy. The half-moon mark is important because the information it shows is the condition of essence, blood and qi. The role of vital energy: 1. Nourishes the five internal organs of the body. 2. Promote the normal operation of qi and blood in the five viscera and six bowels. 3, resistance to external evil (immune function). 4, longevity and anti-aging substances. 5, genetic material. There is a saying in Chinese medicine: the essence is strong, the essence is weak and sick, the essence is small and old, the essence is dead. This shows the importance of essence and vital energy. In our daily life, it is good for our health to restore our essence and take care of our body in time. When energy is insufficient, the important supplement is first of all protein. Chinese medicine says that a lack of essence and blood is supplemented with taste. This means that protein should be supplemented. Good quality protein is better in neutral, such as milk, eggs, beans, fish, black sex food (in the case of black tonic kidney), seed food, embryonic food, etc. After one month of adherence, you can see the appearance of half-moon marks, showing that the energy has been restored to some extent. (C) Normal half-moon marks 1. Quantity The number of half-moon marks should be 8 – 10 in both hands is good. 2. The area of half-moon marks should be one-fifth of the nail. 3. The color of the half-moon mark is creamy white, the whiter the better, the stronger the energy.