The scientific thing is that your life is very stressful. Or don't go to grandma's house often, and have a fear of strange places. Or your own inner hints. Please ask the psychiatrist specifically, specifically, I forgot what a ghost illusion or dream means _
Metaphysics says you shouldn't care too much ~
There may be many reasons for this phenomenon. According to the original text of Duke Zhou
You met a ghost and showed slight signs of struggle. According to the original text, "those who fight ghosts will live longer", which means that your life will continue.
Second, you said that when you met Yan, you should be in hell, that is, in prison.
When the prison collapses, there is forgiveness. If you sit in prison, there will be forgiveness. If you go to prison, the victim will get honor and the deceased will be fired.
If you put people in prison, you will become rich and dirty.
The sinner gets rid of the disease and drives the thief to see the blessing.
These are all good luck, and there are some similar dreams, but they are far from what you described.
From Duke Zhou's point of view, you have something auspicious to happen.
But if you look at it from another angle (I don't know where your grandmother's house is)
In this world, there are many passages connected with the underworld for the dead to pass through, and some houses are located on these passages ~
When people are sleeping, the Three Lamps District controlled by the three souls is the easiest to extinguish, and the connection between the three souls and the subject is also the weakest ~ so it is easy to leave the body (as for the soul, I forget whether it will leave the body), that is to say, when you wait for the soul to enter the entrance by mistake, or meet other souls, the memory will be recorded in your head with the return of the soul, making you think it is a dream. Don't take it too seriously, the chance is slim. )
If you really care, consult a psychologist. Don't worry too much about the things at the bottom ~ ~ you shouldn't be so rote.