What brush should I use to write calligraphy?

Write small print with "wolf hair fine print", "seven purple and three sheep" or "double material writing volume"

You can choose "Yang Hao Block Letters" or "Yulanrui" or "Langhao" or "Double Brush" to write Chinese and big letters.

Write running script and cursive script with long sheep hair.

Write seal script and official script with double brush or wolf brush.

The specific names of pens vary from pen factory to pen factory. You can consult the staff of the painting and calligraphy shop.