What is the special meaning of the saying "if you are not afraid of ghosts crying, you are afraid of dogs barking"?

In rural areas, the roads are quiet because of sparsely populated, and the environment is simple and there are no street lamps. At night, no matter how old you are, you will feel scared when you walk in the village. There are many old people who are afraid that their children will go out to play at night, which will affect others' rest, and they are also afraid that these children will get lost, so they lie to these children that they can't go out to play because there are ghosts outside, which makes many children believe this.

The literal meaning of this sentence seems to mean that you are not afraid to hear ghosts crying at night, but you are afraid to hear dogs howling all the time. Because in rural areas, basically every household will have a dog, and raising a dog is also for guarding the home. At night, everyone is nervous, because many bad guys are ready to take action at this time, so if your dog barks at night, it is likely that something happened at home, maybe the bad guys came in, which will make the owner of this yard feel very scared.

In rural areas, there is also a legend that barking at night may mean seeing something unclean. It may mean that this family or the owner of this family has provoked something unclean. It is terrible in rural areas at eleven o'clock. Because of their low education level, they are convinced of some superstitious things, and barking at night will also remind them of this.

barking at night or day will make people feel that something is going to happen. It is also said that barking at night indicates that something bad will happen at home. If a dog barks at night, it may mean that the old people in the village are seriously ill or will die. Therefore, people are very afraid of hearing dogs howl in the middle of the night, but these things have no scientific basis, and there are some superstitious ideas in them. However, compared with people, dogs' sense of smell and ears are more sensitive, and even a little abnormal movement can be detected by dogs. He can find it in advance without any changes, so the dog's constant shouting also indicates that something will happen.