- The traditional name of this brush is Shuxu or "whiskers of a mouse". The hairs are actually from domestic animals such as rabbits. No rats are killed. The traditional Chinese brush name here only indicates the type of brush, similar to "wolf brush"(stiff brush), "sheep brush"(soft brush). 

- Draw whiskers of a cat, rabbits, tigers and other animals.

- Draw any fine lines or details such as lobster antennae, weeping willow twigs etc.