Steamed dumplings are a traditional Chinese festival food, which is eaten every year at the Spring Festival. It is said to have been first invented by Zhang Zhongjing, the "Sage of Medicine" in Nanyang, Eastern Han Dynasty of China, and it is customary to eat dumplings at the winter solstice in many provinces and cities in China. Dumplings are also commonly eaten in southern China. Although this common snack is difficult to be recognized as "elegant" at banquets, it is the original cuisine of Xi'an Dumpling Banquet Restaurant in recent years, which is regarded as the "Three Greatest Diets of Xi'an" along with the famous imitation Tang dishes and beef and mutton buns. Dumplings are usually just a traditional snack stuffed with pork, beef, mutton and vegetables. But now not only chicken, duck, fish, eggs, seafood, mountain treasures, fresh vegetables, dried vegetables, fruits, etc. can be used as filling. But all the delicious and nutritious materials can be stuffed.