Jiaozi is made of dumpling skin and dumpling stuffing. The dumpling skin is the same. Generally, noodles are mixed with cold water, and the dough used to wrap jiaozi is soft. The fillings in jiaozi are very diverse, and seasonal vegetables in each season can be made into jiaozi. Like leek, fennel, radish, Chinese cabbage, shepherd's purse, rape and so on, almost all edible vegetables can be used to make jiaozi stuffing. There are all kinds of meat, such as pigs, cows, sheep, donkey meat and all kinds of seafood, which can be made into dumpling stuffing.