1, with different properties: sharp point: soft pen tip, elastic writing and many changes. It is suitable for practicing calligraphy and signing, and can also be used for daily writing. The tip can be made into many styles, and most pens abroad are pointed. Dark tip: the pen tip is hard, suitable for daily writing shorthand. Early ink is easy to dry, and using a dark nib can prevent the ink from drying quickly on the nib.

2. Different development: the former is the earliest prototype of the pen, and the latter is improved on the basis of the former. At that time, the pen was airtight and dry-resistant, and the tip sleeve was added to protect it, which could better prevent ink from evaporating, thus forming a dark tip.