Zhang Zhi (word Boying) was born in Jiuquan, Dunhuang. Study hard and be good at ancient times, but be weak at ancient times. When the court refused to sign the Tao Te Ching, people addressed themselves as "Zhang Youdao". Good calligraphy is best at scribbling. Zhang Zhi used to study in the pool, and the water in the pool was black. At home, he wears silk and then practices, which shows that he has deep skills. It was praised by later generations as "ahead of others and unique." Known as the "sage of grass." Zhang Zhi has always enjoyed a high position in the world of books. In the Book End, Zhang Zhang's cursive script and cursive script are listed as magical products, saying, "Especially cursive script comes from Cui Ai. Dragon and leopard change and shine on you. It is also made in this grass. It is not a pity that the weather is different and the rate is over-opened. If the clear stream is endless from the long source, it will wander back to the cliff valley and let it be natural. " Zhang Xu, Dan Wei, Suo Jing, Wang Xizhi and his son, Zhang Xu and Huai Su all came from Boying. Yang: "Zhang Zhi, Zhong You, were called' book saints' at that time. However, it is strong and muscular, and it is the first of the sages. "
Zhang Xu (658-742) was born in Wu Jun (now Suzhou, Jiangsu). During the reign of Tang Kaiyuan and Tianbao, this official visited Jingzhao (now Xi 'an). At the beginning, he was the commander-in-chief of Changshu, and he was called "Zhang Changshi". Gongshu, also known as Cao Sheng, was written by Li Bai and Pei? F sword dance, Zhang Xu cursive script for the "three unique". "To Zhang Xu": "Expose the bed and shine on Hu, which is called three or five times. Xing Lai sprinkled the plain wall and waved his pen like a meteor. " Zhang Xu's weeds handed down from generation to generation include abdominal pain stick, four sticks of ancient poems and Lang Guan Ji in regular script, which can prove that his "dot" is not outrageous and has rules.