Hard pen calligraphy: The writing tools of hard pen calligraphy include pens, ballpoint pens, dip pens, pencils, plastic pens, bamboo pens, wooden pens, iron pens and so on. And ink is the main carrier of China's writing skills. It has the characteristics of convenient carrying, quick writing and wide use value. The difference between it and the brush pen is that it changes the rough stippling of the soft pen into a slender stippling, and removes its tendons and bones.
reference data
Ancient Poetry Network: http://www.gushiwen.org