Who wrote calligraphy?

Xie's calligraphy was written by He Chao. Because Xie's calligraphy comes from He Chao's "Eating Crab Poems", it is neat, simple and mellow, so it is called Xie's calligraphy. He Chao (166 1- 1722), a native of Wuxian County, Suzhou, is also known as Mr. Yimen. So Xie's calligraphy was written by He Chao.