Snack bar. According to the information of Cao San in Changyuan County, Cao San Liangpi Store in Changyuan County was established on August 8, 2007+2065438. Its registered place is located on the west side of the northern section of Pudong Street in Changyuan County, and its business scope includes snacks and services. Retail prepackaged foods. Bean jelly originated from the traditional cuisine of Han nationality in Guanzhong area of Shaanxi Province, which is the general name of rolled dough, rice flour and stuffing noodles. It is very popular in northern China, and it is a rare natural green pollution-free food.