It is said that the dumplings were invented by a doctor named Zhang Zhang Zhang Zhang, who could not bear to see the ears and feet of the poor who were running in the cold winters, then boiled the foods of sheep, ginger and other warm foods together, cooked them up, cut them apart, wrapped their skins into their ears, cooked them in pots, fed them with soup to the frozen people, then ate them, heated themselves, heated their ears, bled their blood veins, and their ears and feet were not frozen. This food, which was called "Ears" at first, gradually evolved into a "stitch."。