The custom handed down from ancient times is not suitable for women to worship their ancestors during menstruation. When women appear red during menstruation, it means that there are some dirty things on their bodies. Therefore, it is stipulated that women who have menstruated are not allowed to enter Buddhist temples or worship their ancestors. Tomb-Sweeping Day does not allow women to stand in front of her grave or when she is buried. Here are some feng shui proverbs.