Why do we use blinds? The blind can't see, so his heart is clearer and more focused than ordinary people, his heart is not chaotic, and his voice is clear. Why do you have to recite the Book of Songs instead of anything else? First of all, the Book of Songs can be sung in ancient times. Isn't there a saying that "Confucius sang all three hundred poems." The Book of Songs has a harmonious rhythm and can "nourish the mind"; Poetry is gentle and honest, which can "nourish temperament".
For example, the familiar poem "Yo Yo Luming Literature, an apple in the field" can make pregnant mothers imagine that their children are as light and lively as deer; Another example is "green, leisurely in my heart", let the mother who listens to poetry imagine that the child is elegant and handsome. The pregnant mother's temperament is softened, and the mother and child are connected, which makes the little fetus quiet and happy.