The period between the Eastern Han Dynasty and the Tang Dynasty was the mature period of calligraphy. This sentence is correct
From the Eastern Han Dynasty to the Southern and Northern Dynasties - the mature period of calligraphy art is marked by the birth of Fenshu and the finalization of regular script, running script and cursive script. The structure of the divided script breaks the original convoluted writing method of seal script, splitting the integrated glyphs into pieces and merging them with other parts. Simplify it. After processing the thickness, length, and retracting waves, different forms of strokes such as horizontal, vertical, nip, and dots are produced.
In short: oracle bone inscriptions, bronze inscriptions, stone inscriptions, seal scripts, official scripts, cursive scripts, running scripts, and regular scripts
The simplification of structure and the complexity of pointillism gave rise to the art of calligraphy. Pay attention to using free and diverse line changes, movements and spatial structures to express the author's thoughts and feelings. From this, it sublimates into the art world of highly abstract "lines". During this period, Zhang Zhi, Zhong Yao, Er Wang and his son and others bravely innovated on the basis of divided script, running script and Zhangcao, and promoted the maturity of regular script, running script and cursive script.
The prosperous period after the Sui and Tang Dynasties: the development of fonts has ended, and the art of calligraphy has mainly developed in the direction of diversification of calligraphy styles. For example, in Tang Kai, there are Ou (Yangxun), Yu (Shinan), Chu (Suiliang), Li (Yong), Yan (Zhenqing), Liu (Gongquan) and so on.
Writing in cursive is more free, and there are more calligraphy styles. The art of calligraphy has shown many prosperous scenes of multi-faceted, colorful and colorful flowers.