What calligraphy do we usually write?

In a broad sense, it is hard pen calligraphy or just pen calligraphy. Generally speaking, what we write with one stroke and one painting is called regular script, and Lian Bi is called running script. However, strictly speaking, hard pen writing is not calligraphy, and the word "calligraphy" is interpreted as: "refers to the method of writing with a brush, mainly focusing on the methods of holding the pen, using the pen, stippling, structure, distribution (line order, composition) and so on." Modern scholars define calligraphy as an abstract symbolic art with four-dimensional characteristics based on Chinese characters and written with a brush. There are still some disputes in academic circles about whether the hard pen is calligraphy. At present, it is generally believed that it is not calligraphy. So what do we usually call "hard pen calligraphy"? You can search "What is hard pen calligraphy" in Baidu, where there is a detailed explanation. I hope I can help you.