Taihe Twist, a special fried pasta snack in China, is said to have been invented by Chai, a native of the Eastern Han Dynasty, and is sold in Taihe Road, the second ring road in Anton. Xi 'an, referred to as "Gao", was called Chang 'an and Haojing in ancient times. It is the capital of Shaanxi Province, a sub-provincial city, a megacity and the core city of Guanzhong Plain urban agglomeration.