The situation Yun Chu described is a very common one.
Many people have had such dreams.
In the dream, they argue or fight with a bastard they dislike or even someone they hate to death. They often get furious, sometimes even injured, but they never kill the other person in the dream.
It's widely known that dreams are controlled by the subconscious mind. In the subconscious, murder is a crime, it's wrong, so it's not easy to commit murder even in a dream.
