Is hard-pen calligraphy really calligraphy?

Modern calligraphy can be divided into two categories according to writing tools. One is soft pen calligraphy, and the other is hard pen calligraphy.

So hard pen calligraphy is calligraphy.

Generally, it refers to calligraphy created with hard writing tools such as pens, pencils, bamboo pens, chalk and quill pens.