Generally, the pen tip is written in italics in parallel, or the copper plate with a round nod is round.
There are also several kinds of pens, straight and so on. (It should be diagonal in the road map)
This kind of pen is more changeable than a pen, and the thickness of strokes can be changed when writing.
(Imported from abroad, sold online, but more expensive)
I hope Lanzhou can practice calligraphy well.