Four highs and three lows are the standards of beauty. The forehead node, nose wing, lip peak and chin tip are high, and the chin high point of nose wing and lip peak tip is best on a line, which is called beauty line. The perfection of the central axis is the standard of great beauty. Because of genetic problems, China people's faces are generally flat and lack of three-dimensional sense, mainly because their faces are sunken in the middle and their noses are flat. Some people's chin is backward, which is not good enough. A-list stars are usually good-looking The outline is compact and the proportion of the five senses is coordinated. There is a marquardt mask in the world, which can measure the proportion of people's faces.