Suggestion: The development of semilunar scar should be influenced by nutrition, environment and physical quality. When the digestion and absorption function is not good, the half moon mark will be blurred, reduced or even disappeared. The condition of the half-moon sign shows the information of human health. There is no half moon mark to supplement protein. High-quality protein should be neutral, such as milk, eggs, beans, fish, black food, kidney-nourishing food, seed food and embryo food. After a month of persistence, you can see the half-moon mark, which shows that your energy has been restored to a certain extent.