The four masters who wrote regular script in Song Dynasty were mainly

Four Great Calligraphers in Song Dynasty: Su Dongpo, Huang Tingjian, Mi Fei and Cai Xiang. In the field of calligraphy art in the Northern Song Dynasty, Su Shi, Huang Tingjian, Mi Fei and Cai Xiang were called the four great calligraphers in the Song Dynasty by later generations.

The four masters of regular script are the collective names of four calligraphers who are famous for regular script in the history of calligraphy, also known as the four masters of regular script. They are Ou Yangxun (European style), Yan Zhenqing (Yan style), Liu Gongquan (Liu Ti) and Zhao Mengfu (f incarnation) (Zhao Ti).

Expand:

Ou Yangxun was born in Linxiang, Tanzhou (now Changsha, Hunan). His calligraphy achievements are based on regular script, with bold brushwork and unique structure, which is called "European style" by later generations.