Swallows come to build nests at home. What does Feng Shui say?

As far as direction is concerned, no matter who is at a 360-degree angle, 2 degrees will be the most auspicious. Swallows come to build nests at home, which only shows that the magnetic field at home doesn't hurt birds, mortals live well and monks live badly. Because I have tried, no matter which house I live in with the swallows, the swallows in that house will soon abandon their nests.