Running script font is one of the five major fonts, namely seal script font, official script font, cursive script font, regular script font and running script font. Running script font is a writing style after regular script, which came into being in Han Dynasty. Running script reached its peak when Wang Xizhi of the Eastern Jin Dynasty matured, and it didn't appear until about two thousand years later.
Zhang Huaiguan, a theorist in the Tang Dynasty, said in the Book End: "Calligraphers were created in Yingchuan by Liu Desheng of the later Han Dynasty, that is, they are called calligraphy because of their small mistakes and simple work.