There are "five colors" in ancient Chinese costumes: yellow, white, black, blue and red. These "five colors" have some special meanings, which are closely related to the four seasons.

Green is equivalent to mild spring, the color of budding vegetation, sunrise; Red is equivalent to hot summer, the color of fire, facing south, noon; Yellow is equivalent to the season of alternating seasons, belonging to the soil, with the orientation as the center; White is equivalent to cool autumn, which is a metallic color, facing the west, indicating that there is no time for the sun; Black is equivalent to the color of cold winter, water and abyss, and it faces the north, that is, late at night.