What are the characteristics of Su Dongpo's calligraphy style?

Su Shi (1037 ~11year), a famous writer and painter in the Song Dynasty (Northern Song Dynasty), was named "Dongpo Jushi" and was born in Meishan, Meizhou, Sichuan. He, his father, Su Xun, and his younger brother, Su Zhe, are famous for their literature, and they are called "Su San" in the world. In addition, Su Shi, Han Yu and Liu Zongyuan in the Tang Dynasty were called "the eight great masters in Tang and Song Dynasties" together with Ouyang Xiu, Su Xun, Su Zhe, Wang Anshi and Ceng Gong in the Song Dynasty. Su Shi is also good at calligraphy and regular script. Together with Huang Tingjian, Mi Fei and Cai Xiang, he is known as the calligrapher who can best represent the achievements of calligraphy in the Song Dynasty, and is collectively called "Song Sijia". Huangzhou cold food poem post is the most wonderful masterpiece of Su Shi's existing works, and is praised as "the third running script in the world" by later generations. Huang Tingjian said in Valley Collection: "Those who are good at books in this dynasty should take (Su) as the first." There are many people who study Su Shi's poems, essays and even his life stories. The writer's great aura is so dazzling that people can't see its brilliance as a calligrapher. Rich in ink. Su Shi's calligraphy always gives people the feeling of fullness. Thin golden body is famous for its thinness, while Su Shi's calligraphy is fat and beautiful. Of course, rings are fat or thin, and everyone has different preferences. Some people fall in love with Su Shi's calligraphy at first sight, while others have a bad first impression of Su Shi's calligraphy. Zhao Meng? #92; On the evaluation of Su Shi's calligraphy, such as "The black bear is in power, so terrible." Huang Tingjian also thinks that Su Shi's calligraphy uses too much ink. For this reason, in Su Shi's calligraphy, it is rare to see the dry pen flying white, but the words are rich in meaning. All Su Shi's works have this feature. Such as "debating teacher posts" and "posting with Chief Executive Dong". . The knot is flat. Contrary to the slender shape of the fist, Su Shi's calligraphy is mostly flat. This feature is prominently reflected in his works, such as Fu on the Red Wall and Fu on Dongting Spring.