According to legend, mouse pad has a history of hundreds of years in Hakka area. Although it is called "mouse pad", many people think it is made of something like mouse meat, but it is not. The "mouse pad" has nothing to do with the mouse, but is called "mouse pad". In Gannan area, this kind of food circulates like mouse excrement, so it is called "mouse excrement".

The method is simple, scoop a few spoonfuls of sesame oil on the surface, sprinkle with chopped green onion, add a few spoonfuls of pickled mustard tuber, pickled cabbage and dried radish, and you can enjoy it.

The mousetrap also spread to Hong Kong. Because of the indecent name "mouse", the local people call the vermicelli with a sharp point like a silver needle powder.