To cook some warm soup, such as red dates and medlar chicken soup, you can also cook some ginger medlar brown sugar tea. Otherwise, try to wear strong clothes, don't wear some flashy clothes, add a scarf to keep your neck warm, and then your whole body will be much warmer. If your feet are too cold to sleep at night, you can soak your feet with hot water before going to bed, or you can buy an electric heater and put it under the bed.