Literature Reference: Standing again at the dragon’s head, wielding the rabbit-hair brush. Source from 'Ji You Shi Li Ding Yan'.
兔: The rabbit. A symbol of purity, kindness, and adorableness.
毫: Hair's breadth, the slightest. Originally referring to long and sharp hairs, it later metaphorically denotes the tiniest of things or the most minuscule quantities or parts.
Meaning: Rabbit hair symbolizes quick wit and literary talent, often used to describe writing tools or the brilliance of scholars.