Xi'an is a thousand-year-old capital and a capital of food. Hulu head bubble may be relatively unknown to foreign diners. Hulu head bubble is actually a pig intestine bubble, because the large intestine is similar to the hulu, so elegant. It is rumored that there was this food in the Tang Dynasty. Under the guidance of the medicine king Sun Siqi, the formula was improved. The bubble dumplings did not have the original fishy smell of the pig intestines, and they tasted crispy and refreshing.