Personally, I think this situation is bad luck. To put it mildly, it's nothing particularly serious. For example, if you are bitten by a mosquito, a cockroach or a centipede while sleeping, it may be that your home is in a special environment. If it is a normal residential area, these mosquitoes should be less likely to appear, let alone mice. He always avoids people, and he may appear in other people's homes.
These things are hard to meet in modern people's homes. If you live in a residential commercial house, it is basically difficult to have mice at home, because the house was built in concrete structure, unlike the old house made of loess lime stone. The concrete structure is very strong, and there is no room for mice. What's more, your home is on a dozen floors, and rats can't get on it at all, and it's impossible for your home to encounter these things. Don't think so much, there are some.
China's culture has been passed down for thousands of years, which has both good and bad aspects. Therefore, we should adopt an attitude of taking the essence and discarding the dross, which is a truly useful traditional virtue. We should pass them on, and we should gradually get rid of those unreliable things in feudal superstition. But you can't absolutely deny the ideas held by his older generation, because he has believed in this thing all his life, and suddenly you say that he is wrong. Do you think he can stop arguing with you? There is no need to quarrel about such a thing.