Why zbrush brushes suddenly do not respond?

Beyond the traditional 3D modeling software, Zbrush has two of the most obvious advantages: easy to get started and powerful, it is the easiest to get started with the industry newcomers to the 3D modeling software, the veteran to the old bird. For newcomers to the industry, it is the easiest 3D modeling software to get started, and for veterans, there is no software that can compare to Zbrush's powerful high-mode sculpting capabilities. Therefore, Zbrush is an important and indispensable software for today's next-generation modeling/animation/film and television and even sculpture industries. Here is a selection of self-tutorials for Zbrush. I hope you can be inspired, so that you learn the road less detour.

ZBrush2020 Getting Started Tutorial: Perfect for students who want to get started with ZBrush quickly. From the basic command operation to polygonal modeling, texture material production, five senses production, skin folds, shirt production, rendering, and post-synthesis and other explanations, to lead the students to master the Zb sculpting methods and techniques.