China's calligraphy became an appreciation art in the late Eastern Han Dynasty. Later, through the creative practice of calligraphers in Wei, Jin, Southern and Northern Dynasties and the legacy of Wang Xizhi's father and son, it had a great influence on the development of China's calligraphy in Sui and Tang Dynasties. Due to this background, the art of calligraphy reached its peak in Sui Dynasty and early Tang Dynasty. In Song, Yuan, Ming and Qing dynasties, many calligraphers borrowed from the Tang people. However, the Sui Dynasty was a crucial moment in the history of China's calligraphy development. Mr. Wang said: "The Sui Dynasty was only thirty-seven years, but the calligraphy art of this era inherited the legacy of the development of the Jin Dynasty and the Southern and Northern Dynasties, and opened a new bureau of gradual adjustment and standardization in the Tang Dynasty. This transition time is a key point in the history of medieval calligraphy in China, which deserves a comprehensive analysis and research. " . The style of calligraphy in the Tang Dynasty was superior to that in the Sui Dynasty, and the regular script was developed to a new peak. There are obvious differences between the regular script in the Tang Dynasty and the regular script in the Southern and Northern Dynasties, and there are many other styles in the inscriptions in the Southern and Northern Dynasties. The regular script in the Tang Dynasty is rigorous, elegant and generous, unlike the eccentric writing in the Southern and Northern Dynasties.