Swallow geomantic omen means longevity, and likes sunshine and warmth. Therefore, if swallows fly into the house, the geomantic atmosphere of the house will be strong, the balance of yin and yang will prosper the health of the people in the house, and the body will not be troubled by minor illnesses.
Yang Zhai pays attention to the balance of yin and yang, so the lighting in the house is extremely important, and the light should not be too strong or too dark. Therefore, swallows enter the house to show the lighting, feng shui atmosphere and proper temperature, so that swallows can easily fly into the house and are suitable for people to live in.
If there are no swallows flying into the house, it doesn't mean that the layout of the house is not good. The layout of feng shui needs to be based on feng shui, and careful observation can distinguish good from bad.