Crazy Grass Calligrapher, whose seal is "Dragon", refers to Zhang Xu, a contemporary calligrapher in China. Zhang Xu was a famous calligrapher in Tang Dynasty, famous for his cursive script. The cursive style is bold and heroic, and its personality is distinct. Works have an important position in the history of calligraphy and are known as "sage of grass". Crazy cursive calligraphy is the third calligraphy style in the history of China cursive script development, which belongs to the most indulgent cursive script. The strokes are coherent and round, and the fonts are wild and changeable. On the basis of this cursive script, write it in a continuous way.