2 dream interpretation: killing people represents a desire to release, probably because something bothers you and you can't vent. Killing people in the dream gets some venting in the subconscious, but because things are not certain, even under the general trend of the subconscious, there are still two people trying to kill people.
3 dream superstition: just dream of the dead. If you kill someone and see a dead person, it means that you have good luck to increase your wealth. But without seeing the dead, killing people can be understood as fighting, so there will be unnecessary trouble in life.