The winter solstice is the shortest day and longest night in the northern hemisphere. Since the beginning of the winter solstice, nine cold days have arrived. At this time, you should pay attention to the warmth of your head and feet when going out; take precautions to prevent colds. There is a custom of eating dumplings and wontons in the north of my country, while in the south, people eat glutinous rice balls, winter solstice rice balls, and long-thread noodles. What do you eat during the winter solstice?