Zhang zhi (? -about 190 to 193), the word Boying, from Jiuquan, Dunhuang. He dares to innovate, omits the difficulties of Cao Zhang, shows the power of escape with smooth brushwork, and breaks the routine of Cao Zhang, thus creating the calligraphy style of "modern grass". Today's brushwork is natural, combining rigidity with softness, and appropriate density. Later generations listed Zhang Zhi as a "sage of grass". Even Wang Xizhi, the later "book saint", said that his cursive script was not as good as Zhang Zhi's. However, Wang Xianzhi, the son of Wang Xizhi, created the most popular story, not Zhang Zhi.
Unfortunately, the original works of Zhang Zhi's calligraphy are rarely circulated. Only the Song Dynasty's Spring Pavilion Post contains two volumes and five posts by Zhang Zhi. Whether these are genuine or fake, there are different opinions, and it is still difficult to draw a conclusion.
Modern cursive script is the first in Lin Sanzhi and has the reputation of "sage of grass". The masterpiece is "Sino-Japanese Friendship Poetry", which is Lin Sanzhi's first cursive script.