What is the gray tail of the brush?

The gray tail of the brush is rabbit hair. The gray tail is mainly used as a writing brush. Occasionally used as a landscape painting. The gray tail is mainly a rabbit brush, which can be regarded as the first-class pen in the brush.

The concrete evaluation method of gray tail: it is made from the back of rabbit's neck, so it is named because of its dark purple color. The strength of rabbits in the north and south of China is different, and some rabbits are made in the north and south. The tenacity of rabbits is called health brush, which is better than that of the north. It is long and sharp, suitable for writing straight Fang Zhengzhi characters, and is valued by calligraphers.