1, shape: hanging noodles is a kind of thin, white and tough handmade noodles, some are round, some are flat. Longsu noodles are long and thin noodles shaped like dragon's whiskers, evolved from Shandong stretched noodles.

2. Production process: Hanging noodles are usually made with machinery such as a noodle press, which presses the dough into thin sheets and then makes them into hanging noodles through a number of processes. Longsu noodles, on the other hand, are mainly made by hand, after repeated stretching and shaking processes, making the noodles long, thin, even and pliable.

3, popular areas: hanging noodles is a popular noodle, in many areas are produced and sold. Longsu noodles, on the other hand, are more common mainly in the northern regions and are a traditional noodle dish.

4, history: hanging noodles have thousands of years of history, the Tang Dynasty, Song Dynasty is the real noodles into the "strip" period, the Yuan Dynasty, the Ming Dynasty has been the introduction of hanging noodles. Longshu noodles have a history of more than 300 years.