Tianhong Department Store Building, Ningxia Road, Chang'an District, Xi'an. According to check the official website of Baidu map, Qianxian hanging noodles in Xi'an City, Chang'an District, Ningxia Road, Rainbow Department Store Building. Qianxian handmade hanging noodles, the first of the four treasures of Qianzhou, also known as, sour soup noodles, has a long history and is a purely handmade product without any chemicals, making it the healthiest noodle in the restaurant industry.