Bird's nest mouth feng shui pays attention to bird's nest mouth.

1. The bird's nest faces inward: Generally speaking, if the swallow's nest mouth faces inward, it means that the family fortune is very good, so the swallow is willing to face the entrance of the nest inward, which is also beneficial to the swallow's survival and will not be disturbed by external pathogens, resulting in the swallow's normal growth and development.

2. The bird's nest faces outwards: most of the bird's nest faces outwards, because there are still very few people with excellent feng shui fortune at home. Most people have good feng shui at home, but some evil spirits will come in from the outside, which makes the swallow's nest mouth prefer to face the outside, because it is convenient for the swallow to leave at any time.