Zhang Xu is from Wuxian. The word "Gaobo" is high, and the date of birth and death is unknown. His calligraphy originated from the "two kings" and is original and innovative. His regular script is accurate. The rules are extreme, and Huang Gu is called "the first in the Tang Dynasty". If his regular script is more inheritance than creation, then his cursive script is a great innovation and development in calligraphy. Han Yu said, "Xu is good at cursive writing, but he can't cure his book." Change is like ghosts and gods, so don't be arrogant. " Du Fu wrote in Song of the Eight Immortals: "Zhang Xu's three cups of grass are sacred. He waved his paper like a cloud before taking off his hat to reveal the top of the maharaja. " He can sublimate the art of calligraphy to the artistic realm of expressing calligraphers' thoughts and feelings with abstract points and lines. In the art of calligraphy, his handwriting seems strange but not strange. The key is that the pen for stippling completely conforms to the traditional rules. It can be said that he used traditional techniques to express his personality and became a creative calligrapher worthy of his own time in calligraphy. Broad, fresh and unrestrained, far more than the previous calligraphers' works, with a strong flavor of the prosperous Tang Dynasty. The representative works of cursive script include Abdominal Pain Stick and Four Sticks of Ancient Poetry.
Du Fu's "Song of Eight Immortals Drinking" contains fourteen sentences: "Jiao Sui's five fights are outstanding, and his eloquence is amazing." In fact, Jiao Sui is also a famous minister in Du Fu's Eight Immortals of Drinking. The second is Ganze Ballad written by Jiao Yuan in the late Tang Dynasty. Hu Zhenheng, an Amin writer, said in Don Yin Gui: "As for Jiao Sui, I have only seen it once in Jiao Yuan's Ganze Ballad. He traveled with Tao Xian and I have never seen anything else." .
Jiao Sui is the leader of "Drunken Eight Immortals" in Du Fu's Song of Drinking Eight Immortals. Judging from Du Fu's poems, he seems to have a good capacity for drinking. After drinking a certain amount, he is very talkative and never stops talking. Later generations learned that talented people have a reputation for being a good drinker, so they can be called the Eight Immortals with Li Bai, Zhang Xu and others.