Cao Sheng Zhang Zhi, a famous calligrapher in the Eastern Han Dynasty, Mo Chi Zhang Zhi, was born in Yuyuanquan County (now Bulongji area in Anxi County). Zhang Xiang, the grandfather of Zhang Zhi, a family of immortals, was the magistrate of Hanyang (now water). Zhang Zhi's father, Zhang Huan, is more famous. He was ambitious when he was young. He often said: the gentleman should make contributions to the frontier of the country, and the post-officials should make contributions to protecting the Xiongnu corps commander General Du Liao and Senior Sinon. Zhang Zhi's mother is rich and virtuous, and Zhang Zhi grew up in such a family. Zhang Zhi is Zhang Huan's eldest son, whose name is Boying. When he was young, he was very disciplined. Although he was born in an official family, he is not a dude. He is studious and devoted to calligraphy. Qiu of this dynasty thought that he was either a scholar or a master. He was repeatedly asked to be an official, but he refused, so he was called "Zhang Youdao". He devoted himself to studying calligraphy, especially cursive script, and studied under Cui Du's method. His father, Zhang Huan, forged stone tables, benches and Mo Chi by the river for the convenience of Zhang Zhi's brother. From then on, Zhang Zhi's brothers made paper out of silk, studied books in the pond, practiced calligraphy first, then rinsed it, and then used it. Day after day, year after year, the water turned black, and later it was called Mo Chi of Cecilia Cheung. Cui Du's brushwork is even more familiar to him. He finally got rid of the old customs, created a whole and turned it into a modern grass. Font an achievement, occasionally broken, blood constantly; The handwriting is constantly running through the context and staggered. The ancients called it "a stroke of flying white", which opened a new world of calligraphy. Calligraphers of past dynasties praised Zhang Zhi's cursive script as "a kind of calligraphy" and respected Zhang Zhi as "the sage of grass". Wang Xizhi, a great calligrapher in the Jin Dynasty, was also deeply influenced by it, and only pushed Zhong and Zhang Caoshu to Han and Wei calligraphy. His book "Trace" has five stickers of "Spring Pavilion Sticks" and wrote "Pen Heart Theory", which has been lost today.
Zhiyong practices calligraphy very hard. When he was in Yongxin Temple, he once built a small building to practice calligraphy, vowing that "if the book fails, he will not leave this building". In this deserted small building, he practiced calligraphy selflessly and spent one stroke after another. He often throws his worn brush into the big urn. Over time, he has accumulated several urns. Zhiyong later buried these brushes in a place and buried them with his own inscription, which was called "returning the pen to the tomb". After twenty or thirty years of hard work, Zhiyong's calligraphy has really made great progress. His fame is getting bigger and bigger, and there are many people who ask him for originality, so that he can never cope with it, so that "the case is accumulated and the dust falls." There are many people who come to consult, and his outdoor space is often full, and even the threshold is trampled. Zhiyong wanted to reinforce the threshold with iron sheets, which was called "iron gate limit" at that time. This "returning the pen to the tomb" and "iron gate limit" have become a story in the book world, which complements the "washing the pen and washing the ink" of Korea and is a beautiful story for the ages.