Hot water and noodles are softer and easier to make into various shapes, while cold water and noodles are harder and more laborious to make, and the noodles are easy to break and not easy to look good. Cold water noodles are harder to make, and they tend to break and don't look good. In addition, hot water noodles are softer and more flavorful when they are steamed. Cold water noodles are hard when they are raw and hard when they are steamed. Cold water and noodles have no flavor and do not ferment! The traditional way is to use hot water, so the noodles are not hard and have a good texture