Is there any way to improve parents' behavior?

The hardest thing to change is others, and the easiest thing to change is yourself. First of all, accept your parents. On the other hand, you shouldn't always draw conclusions from superstition. There are many mysterious mysteries in this world. I have met this kind of thing many times. For example, a fortune teller who has never met the client counts someone as dead at a certain time in a certain year, and this person really died at that time. In addition, countless people have been treated by witchcraft. Second, concentrate on doing your own thing and don't interfere in their lives. As long as it does not endanger life and health, it is regarded as the pursuit and belief of the elderly. People who believe in ghosts and gods believe in karma and will not do bad things. Comparatively speaking, in today's violent society, many people are insatiable and heartless. Compared with these people, your parents should be among the best. Third, popularize some scientific knowledge as much as possible. People are afraid of ghosts and gods, largely because of lack of cognition. For example, ghost fire is caused by phosphorus spontaneous combustion. When popularizing knowledge, we should pay attention to ways and means, don't come to class by ourselves, and rely on masters or experts, such as the speech video of the great temple master and the science and education channel of CCTV.

Finally, I wish your family harmony and happiness!