1, the characteristics are different: hard pen writing focuses on "writing" and brush calligraphy focuses on "method". If a person's hard pen handwriting can conform to a certain stroke structure and the font is dignified and neat, it can basically be said to be beautiful, but it is not calligraphy. Brush calligraphy has external formal requirements in terms of pen use, structure and composition, as well as internal requirements in terms of charm and statutes.
2. The pursuit of value is different: hard pen writing emphasizes practicality, mainly for recording things, while brush calligraphy is an art for people to appreciate and pursues artistic expression. The creative ability of brush calligraphy needs a long-term accumulation process. Hard-pen writing, as long as the method is proper and taken seriously, can achieve the requirements of writing well and writing quickly after short-term training.