Why is Wei and Jin calligraphy in the history of China calligraphy?

Why is it that Wei and Jin calligraphy has a very prominent position in the history of calligraphy? A: From 220 to 420 AD, Wei and Jin calligraphy occupied a prominent position in the history of calligraphy. Wei and Jin Dynasties are the end of the evolution of calligraphy. After brewing since the Eastern Han Dynasty, these new cursive scripts became mature in the Wei and Jin Dynasties, and got rid of the influence of the official script era until the emergence of Wang Xizhi and Wang Xianzhi. Calligraphy in Wei and Jin Dynasties has reached the stage of complete consciousness. Calligraphy has become a universal object of appreciation in all walks of life, and literati began to consciously pursue the beauty of calligraphy as a conscious artistic practice. With the maturity of the new style, the calligraphy of the literati school is constantly updated. This evolution is represented by Zhong You, Wang Xizhi and Wang Xianzhi respectively. These three schools have profoundly influenced the development of calligraphy in later generations. This reference to the brushwork of ancestors has become the basic track of calligraphy art in later generations. Metaphysics in Wei and Jin Dynasties had an important influence on the development of calligraphy. Taoism in Wei and Jin Dynasties also had a great influence on calligraphy. During the Wei and Jin Dynasties, calligraphy theory developed in the great changes of literati calligraphy. It is the product of calligraphy entering the conscious stage.