Who are the four great calligraphers in the history of calligraphy and painting?

The four kinds of running scripts in calligraphy generally refer to:

0 1, Wang Xizhi of the Eastern Jin Dynasty, whose masterpiece is Preface to Lanting;

02. Yan Zhenqing in the Tang Dynasty, the masterpiece of running script "Sacrifice to My Nephew", etc.

03. Mi Fei in Song Dynasty, whose masterpieces are Tiaoxi Poem Post and Shu Su Post.

04. Zhao Mengfu, the representative work of the Yuan Dynasty, The Ode to Luoshen.

There are many running scripts in paintings: Mi Youren in Song Dynasty, Ni Zan in Yuan Dynasty, Wen Zhiming in Ming Dynasty and Badashan people in Qing Dynasty.