When did calligraphy rise as an art?

At the end of the Eastern Han Dynasty, calligraphy gradually became an art. Cai Yong, a famous scholar, wrote an eight-part essay, and Liu Desheng created a running script (cursive script and regular script). There are five kinds of calligraphy fonts, namely: running script font, cursive script font, official script font, seal script font and regular script font. 1, running script font. Running script came into being in the late Eastern Han Dynasty. Running script is a font between modern cursive script and regular script, that is, cursive script or cursive script. 2, cursive font. The cursive script was formed in the Han Dynasty and evolved on the basis of the official script. It is divided into Cao Zhang, Jincao and Kuangcao.