Jiaozi is a kind of stuffed food which is made of flour. It is a traditional food in northern China. In some places it is called a flat food. There are usually boiled dumplings, steamed dumplings and Fried dumplings. People in northern China will never be able to reduce their dumplings in the Spring Festival. Make dumplings on New Year's eve, start eating at midnight, and take the meaning of "more years old".