What is block letters calligraphy?

This kind of line art can't be obtained by sketch in art painting in our life. We must refer to the exquisite inscriptions. Their regular script strokes are clear, structured, square and organized. It's like standing, walking, grass and running. Therefore, block letters are the basis of calligraphy. For a person who is keen on learning books, it is necessary to start with learning regular script. Block letters are also called block letters, real books and official books. It evolved from seal script: simplifying seal script, changing from flat to square, canceling wave painting of seal script and making it horizontal. The duration is probably the Three Kingdoms period, and the actual changes: the wave painting of seal script and seal script have become block letters, such as point strokes, long strokes, short strokes and hook strokes, with more irregular structures.