To get rid of possession, please ask Taoism or Buddhism.

This explanation is very complicated: first, see if you are doomed to some short-lived sudden death, and some short-lived ones can be resolved if you are lucky. But some evil spirits can't be solved by good luck, so you are doomed to do whatever you want, because according to the karma of the three realms, you can only live so much in this life. Of course, atheists can ignore this numerology analysis.