The difference is spicy. Chongqing Xiao noodles refer to spicy vegetarian noodles, which are divided into noodle soup and Regan Noodles, and have a spicy taste. Chongqing noodles also include Chongqing noodles and minced meat pasta, such as beef, pork intestines, peas, miscellaneous sauce noodles and Rongchang bedding noodles. Chongqing noodles are rich in varieties. In the noodle restaurant, you can ask the store to make personal customized tastes, such as "dry" (mixed noodles), "yellow" (dull), "green" (add more dishes), "heavy spicy" (add more oil to peppers) and so on.