How unlucky to be hit by a car: If you are really particular, you can tie a red rope or red to bring bad luck. It is often seen that many cars wear these red belts to ward off evil spirits on their rearview mirrors or wheels. In fact, this is the concern. Ask a professional feng shui master or doorman to draw a road sign for his car and stick it on the car, usually on the front windshield of the car. If you want to handle it yourself, you can also use chicken blood stained with chicken feathers. It is better to use cock blood for chickens, but it is generally recommended to seek the guidance of professional feng shui professionals and remember to reward them.