The second angle is the angle of scientific truth. In real life, bats will not easily enter the home. They like dark and humid environment. If they enter the home, it means that the yin in the home is very heavy and there are many mice. Because bats prey on ultrasonic waves, sometimes bats may fly into the house to prey on insects, but it is also possible that bats may nest at home because of the type of room or the home environment. Therefore, whether bats go into the house to hunt or nest, it is not good for daily life.