Does brush calligraphy have to be cantilever?

In my understanding, cantilever is suitable for relatively free and easy fonts such as cursive script and running script, but it is not recommended to use cantilever writing for more regular fonts such as regular script, official script and seal script. In terms of the size of characters, as described by the two people upstairs, large and Chinese characters can be written by cantilever, while small characters are not recommended. When I started practicing calligraphy, that is, when I came into contact with regular script, I paid attention to horizontal and vertical. If the cantilever is difficult to master, you can also try it. My hands tremble when I hold a pen, and my wrist will be sore after a long time. The teacher told me not to cantilever at first, but then I practiced official script and there was no cantilever. After the practice of running script and cursive script began, cantilever gradually began. My teacher is a teacher of China Book Association, and I think we should adopt his method. I hope my answer can help you.