A terrible dream.

Wow, there are two possibilities for this. First, you have recently watched a similar horror movie or played a game with a similar plot, and you are deeply impressed by these scenes, so you will dream at night. Another possibility is that you haven't communicated with friends, colleagues or classmates much recently, and you will feel a little lonely, right? Don't be afraid. It doesn't really matter. Communicate with people more. If you have nothing to do, you can go out to exercise with friends, play ball and run, or go to the gym to exercise. At worst, go to KTV with everyone and have fun. You will be all right soon. I wish you happiness.