Du meridian belongs to Yang, and Dazhui is the main switch of Yang meridian. If the Dazhui point is blocked, the yang will not rise, and the turbid qi in the body will be heavy and the evil spirits will be heavy. Chinese medicine says, "Those who gain Yang will live, and those who lose Yang will die." Women belong to yin, which is easy to yang deficiency. If yang deficiency, life is not prosperous, women who are not prosperous are not prosperous, and they will also suck the yang of their husbands. This is wealth. Therefore, as a woman, Yang must be sufficient. Only when the yang is sufficient, she will not be afraid of cold in winter, her hands and feet will not be cold, her face will be more ruddy and shiny, her blood will be more vigorous, her metabolism will be better, and she will not gain weight easily.