Stuffed skin is a traditional delicacy popular in northwest China. It is soft and smooth, sour and spicy, refreshing and appetizing. It is very popular in Qinghai, Gansu, Ningxia, Shaanxi, Xinjiang, Inner Mongolia Hetao and other places. Stuffed skin is a dough steamed with flour slurry. There are two kinds of stuffed skin, one is ordinary stuffed stuffing and the other is high-ton stuffed stuffing. "Yongpi" and Liangpi are the same food, but due to the dialects in different regions, the differences between the two are formed today.