What are these fonts about calligraphy?

Originally calligraphy was divided into eight forms and five forms. What is said upstairs is also good.

Five-body harmony

Truth, Grass, Lee, Seal and Action

On the basis of "truth", the above-mentioned six-body characters are subdivided into: regular script and Weibei. There are many books in this field now, including six-body, five-body and eight-body.