The newly-built house has a nest of Yan Xiu, which is a treasure trove of geomantic omen.

A house with swallows is an auspicious sign. Swallows and pigeons are auspicious birds. In ancient times, there was a saying that good birds choose wood to live in. Birds are more sensitive than people, and they make more accurate predictions before earthquakes and tsunamis. Therefore, they are more accurate than people in perceiving the feng shui quality of a family and the rise and fall of a house. So don't drive away the swallows. When the house is about to decline, it will leave your house and go somewhere else.