Wash Closet Stool for Mother Huang Tingjian(黄庭坚Huáng Tíngjiān) was a well-known calligrapher, poet, and filial son who lived during theSong Dynasty(宋朝Sòngcháo). His pseudonym wasHuang Shangu(黄山谷Huáng shāngǔ). As a man of letters, his fame was well-established during his life...