Cao Zhang, which originated in the Western Han Dynasty and Yuan Dynasty, was called "Cao Zhang" by Huangmenling. It is also said that the Eastern Han Emperor Zhang loved this style of writing, hence the name. Zhang Tang Huai Guan said: "Cao Zhang is the victory of official script." Therefore, Cao Zhang still retains some official script strokes. Cao Zhang came into being at the end of Qin Dynasty and the beginning of Han Dynasty, and prevailed in Wei and Jin Dynasties. Decline in early Tang Dynasty, revival in Yuan and Ming Dynasties, silence in Qing Dynasty and revival in late Qing Dynasty. In the Han Dynasty, Du Du was the earliest artist in Cao Zhang, and Cui Ai was also called Cao Zhang. At that time, people still called him "Cui Du". Zhang Zhishi studied under Du Fu, Cui Cao and Qing Shi. During the Three Kingdoms, Emperor Cao Zhang was the best, and Zhong You was also good at this body. In the Western Jin Dynasty, Suo Jing's Cao Zhang art reached its peak, and he was called "a set of two unique skills" with Wei Guan. In the Eastern Jin Dynasty, Xi Xian and his son and Wei Shuo were experts in Cao Zhang. During the Tang and Song Dynasties, calligraphers came forth in large numbers, but few people engaged in cursive writing. If this engraving method of cursive writing is handed down, it will be handed down. By the Yuan Dynasty, Zhao was the only one who owned a page of retro works. The Ming Dynasty was called Trilogy, in which Song Ke was the only one who was good at Cao Zhang. Late Qing Dynasty, revival, but Shen, Wang? Waiting for a group of famous Cao Zhang artists.
Cao Zhang's famous inscriptions handed down from generation to generation include You's urgent chapter, Suo Jing's Yue Yi Tie, Shi Song, Lu Ji's Ping Fu Tie and Huang Xiang's urgent chapter.