Yangchun noodles, also known as smooth noodles or clear soup noodles, refer to noodles with soup without any ingredients, which are common in China and Shanghai. Generally, there is no restriction on the noodles cooked in this way, and they can be as thin as Longxu Noodles or as thick as wide noodles. The name of Yangchun noodles originated from the nickname "Xiaoyangchun" in October of the lunar calendar. According to legend, because the price of this noodle is ten cents a bowl, it is called Yangchun noodle.