Rolling dough was originated from the cold noodles in the Tang Dynasty. Characterized thechewiness, softness, coolness, refreshing taste, and suitability for all seasons, it is one of the distinctive ethnic foods in Northwest China. The dough skin, cool and delicious,is made from high-quality ingredients, with strict techniquesand meticulous seasoning,renowned for being “white, thin, smooth, soft, chewy and appetizing”. Now it is an important local delicacy in northern Shaanxi. There are many shops in Yan'an, and it’s a safe bet to choose the ones with a lot of customers.