Jiaozi, a round bearing platform for steamed stuffed buns and other pasta. The "coping plate" is the common name of Bazhou and other northern cities, and it is a circular bearing platform for putting jiaozi, steamed bread and other pasta during the New Year. First, thread the sorghum stalks tightly with a needle and thread, then cut them into a regular circle with scissors, and a "roof covering" will be done. The dent in the bottom of the jiaozi means that it is wrapped and placed on the "cover plate".