Nightmare Twilight

In dreams, people can only see and understand part of things, because only part of the brain nerves are functioning at this time, and most things are shrouded in fog. When exploring in a dream, when you see more of the true appearance of things under the fog, you may be in danger. If it is confirmed to be a nightmare, you may be scared to death. The formation of nightmares may be due to knots and obsessions smoldering in the heart. The world in dreams really exists.