Does hard pen calligraphy mean pressing the pen hard? Please explain "Dunby" in detail.

Hard-pen calligraphy is mostly used to collect pens horizontally and vertically; Pen skimming and pen lifting; The starting point and turning point of folding painting; Brush in front, click the brush in front. Stop writing can not be simply understood as forcing the pen to sink, and sometimes a very short stop in the process of rapid writing can also be called stop writing.