Su Shi is a great calligrapher and belongs to the plump type. It is one of Song Sijia's calligraphy. When it comes to calligraphers in the Ming Dynasty, they all say Wen Zhiming, Zhu Zhishan and Dong Qichang.
Not to mention Tang Bohu, it can be seen that Tang Bohu's accomplishments in calligraphy are not as deep as his accomplishments in poetry and painting.