In fact, it is unscientific to say that poking bird's nest is harmful to eyes. Generally, people in rural areas get along well with swallows because of mutual trust. Moreover, people regard it as a good thing for swallows to build their nests at home, think that swallows are spiritual birds, and think that swallows usually choose places with good feng shui to build their nests. After poking the bird's nest, it means that the feng shui has been destroyed, so warn the children not to touch it.
In fact, these statements are also people's sustenance. Swallows, as a kind of beneficial insects, should be protected, and they can also play a certain role in protecting farmers' crops. So it is also necessary for people and swallows to live in harmony. In childhood, lying and watching swallows nest is also a kind of enjoyment, leaving endless memories for childhood, isn't it?