As for the choice of wool or wolf hair or both. Mainly in the effect of the brushwork you want to write. For example, I want to write beautifully, Rainbow, Wang Xianzhi and Yang Ningshi.
Something like that.
Wool is more suitable. I want to write vigorously. It is more appropriate to say stone, Mifei and Wang Duo. The so-called double brush is the kind where wolf hair and wool are intertwined. Double brush is more suitable for beginners.
When choosing a brush, you'd better choose one made in Huzhou, Zhejiang.
Shanlian Lake Peninsula. This is a well-known brand of brush.