Vermicelli is one of the most common foods in China, and it is a kind of silk food made of mung bean and sweet potato starch, so it is called vermicelli. It is often also called shredded vermicelli, dongmian (mainly in Taiwan), tangmian on the Korean Peninsula, and noodle in Vietnam.
The best vermicelli is made from mung beans, and can also be made from corn starch or groundnut starch, but the quality is not as good as mung bean vermicelli because mung beans have the most straight-chain starch, which is not easy to rot when cooked, and has the smoothest texture. Similar to the thin noodle-like, dry trafficking, it is best to soak before eating to make it soft, the diameter of the fan is generally about 0.5 millimeters, which is also the origin of the name of it has "silk".