Jiaozi originated from the ancient trough. Formerly known as "Joule", it is an ancient traditional noodle of Han nationality with a history of 1800 years. During the Eastern Han Dynasty, Zhang Zhongjing, a doctor in Dengzhou, Nanyang, invented it as a medicine.

It is a traditional specialty food deeply loved by the people of China, also known as jiaozi. It is the staple food and local snacks for people in northern China, and it is also a New Year's food. There is a folk song called "Xiao Han, eat jiaozi in the New Year." Jiaozi often cooks with flour and leather bag stuffing.

Dumpling skin can also use hot soup noodles, crispy noodles, egg steps or rice noodles; The stuffing can be vegetarian, sweet and salty; Cooking methods can also be steaming, roasting, frying, frying, etc. There are three kinds of meat stuffing, shrimp, crab roe, sea cucumber, fish, chicken, pork, beef and mutton. And vegetarian stuffing is divided into assorted vegetarian stuffing and ordinary vegetarian stuffing.