August Post is the work of a famous calligrapher in the late Eastern Han Dynasty.

Zhang Zhi was a calligrapher in the Eastern Han Dynasty in China. The word boying. Dunhuang Jiuquan (now Jiuquan, Gansu) people. Zhang Zhi is good at cursive Cao Zhang. Later, he changed the ancient cursive calligraphy of distinguishing characters and pens into a new writing style with ups and downs, which was original and influential at that time and was known as the sage of grass. His cursive script had a great influence on the cursive scripts of Wang Xizhi and Wang Xianzhi.

Zhang Zhi's posthumous works are rarely circulated, and what can be seen now is the Spring Flower Pavilion (Spring Flower Pavilion is the earliest calligraphy post in China) carved in the Song Dynasty. Volume *** 10 contains China's calligraphy ink for more than 1000 years from pre-Qin to Sui and Tang Dynasties, including 420 works by emperors, courtiers, famous calligraphers and others 103, which was praised by later generations as the crown of calligraphy posts in China and the "ancestor of cluster posts". ) The second volume is marked as five posts of Zhang Zhishu.

"August post" is also called "autumn post is cool". Cao Zhang, six lines, eighty words. It can be seen that the Song Dynasty engraving "Chunhua Pavilion Post". The handwriting of "August Post" is simple and lovely, the best in ancient and modern times. The pen is simple and subtle, mellow and vigorous, and the structure changes with the momentum, which is natural and smooth. It is the representative work of Cao Zhang by Zhang Zhi. There are few exaggerated forms of "swallowtail" in this post, and the pen collection is implicit. Most of them are made or pressed, or hooked back to connect, with the taste of modern grass.