In the event of a fire, the first reaction of most people is to "rush out" and evacuate quickly. Therefore, we apply the unconscious design concept and combine people's behavior habits to make a part of the door handle into a fire extinguisher, so that we do not need to look for the fire extinguisher in case of fire, but when we pull the door handle out, the "fire extinguisher" is actively sent to our hands, thus minimizing the reaction time to deal with the fire and improving the fire fighting rate.