Zhang Xu's cursive script looks crazy, but its composition is quite standard. He is a kind of crazy grass developed on the basis of Zhang Zhi and Wang Xizhi's cursive script. Read his book carefully, there is no irregular smearing, and many subtle strokes and transitions between words are clearly explained, and there is no artificial feeling. Influenced by passion, Zhang Xu's cursive script quickens its pace, like a golden snake dancing wildly, and like a tiger sitting on a dragon's plate, showing a trend of thousands of miles. Because of the turbulence and texture of the lines, the artistic atmosphere of the prosperous Tang Dynasty was added, thus forming its own unique wild grass style.