A good mentality and harmonious emotions are key conditions for a happy family, and also important factors for pregnant women to achieve optimal pregnancy and childbirth. When the mentality is good, the fertilized egg will "safely and comfortably" develop and grow in the uterus, resulting in a healthier and wiser child. Modern medical and psychological research has proven that the mother's mental state during pregnancy, such as fear, tension, sadness, sorrow, depression, or extreme joy, can all affect the fetus's normal growth and healthy development to a certain extent.