Dumpling is a Chinese cuisine. Actually, the tradition of eating dumplings during winter solstice has its (originate) in early times.
It is said that dumplings were invented by Zhang Zhongjing, a (fame) physician from the Eastern-Han Dynasty. He was once official in Changsha.When he returned home for private life, he saw people lived an (extreme) hard life and that their ears were red with cold in the snowing winter. He was sad and let his follower cook (drive) out the chill with mutton, hot pepper and some medicine. Zhang let him boil them first and cut them up, then wrap them with flour. After (boil) them, he gave the medicinal food to the people there on the day of the winter solstice. Zhang Zhongjing called it "cold dispelling dumpling soup". By eating this kind of ear-like food, people's ears (cure).
Thereafter, every winter solstice Zhang Zhongjing made "cold dispelling dumpling soup" in order to prevent and cure ailments (cause) by the cold. Then there became a saying that you eat dumplings during the winter solstice, then you won't freeze your ears off.
Afterwards, Zhang Zhongjing died on the day of winter solstice. honor of him, every household makes dumplings every year on the day of the winter solstice.