Where do swallows like to nest?

In rural areas, swallows nest at home. Not every family will nest, but they prefer sunny and ventilated places, where there will be more.

Let's talk about something metaphysical, but please believe in science. Just listen to this:

Swallow nesting here is related to geomantic fortune. Some old houses here have been ancestral for hundreds of years, and this phenomenon exists. Many old people or adults will educate children not to dig out or destroy swallow nests, because this is a good moral. According to geographical geomantic theory, those who come to benefit when the house is lucky. Even if children destroy it, swallows will come to rebuild their nests.

When the house is returned, swallows will not come to nest, and even if the original nest exists, they will not come to live and breed their offspring.

You say there is such a thing, but it seems that there isn't. Believe it or not, swallows are industrious and beneficial birds anyway. Please try to protect them if you can.