Who founded the "calligraphy style" in calligraphy?

Shu Tong (1905- 1998) is one of the most outstanding calligraphers in modern times, a people's artist and the founder of calligraphy style. Mao Zedong called him "a calligrapher on horseback" and "a pen in the Party". The style of writing is also called "seven-and-a-half book", that is, Qi, Xing, Cao, Li and Zhuan Xu have one point, Yan and Liu have one point and half. The law is rigorous and magnificent, which is valued by the world. Calligraphy became popular in 1930s and 1940s, and became a peak of modern calligraphy.