Does anyone know what a pen is in the room?

Art crystal glass pen, also known as glass dip pen.

Glass pen is an ancient writing tool that stores water by comparing patterns. When writing, it relies on gravity and patterns for drainage writing.

Generally speaking, the paper used for glass dipping pens is the same as that used for pens, and calligraphy paper and Taoist paper are the best.

This kind of pen wears a lot when writing and has a strong damping feeling. Because the pen is made of glass, it should be maintained when used.

When writing, the font effect is close to that of a pencil, but it has the beauty of dipping a pen. However, due to the treatment of the pen tip, it is not suitable for writing very accurate fonts.