Putting underwear wrapped in red paper under the bed is a folk custom, which means to ward off evil spirits, evil spirits and good luck. People in some areas believe that placing underwear wrapped in red paper under the bed can ward off evil spirits, protect the safety and health of family members and avoid being invaded by evil. In addition, red is also regarded as an auspicious color, which can bring good luck and happiness. Therefore, putting underwear wrapped in red paper under the bed is also a way to pursue happiness and good luck.
But this is just a folk custom and traditional concept, and there is no scientific basis and universal applicability. In modern society, these customs and concepts gradually fade away, and people pay more attention to science and modern lifestyle. Therefore, the significance and function of putting underwear wrapped in red paper under the bed may vary from region to region and family, and it needs to be judged according to the specific situation.