Shu Di (1304-1377), Yuan opera writer, poet, lyricist and calligrapher. His courtesy name was Daoyuan, a native of Jixi (now part of Anhui). He is good at official calligraphy and knowledgeable. He once served as Xuezheng in Taizhou, but later he became a retired official due to hard times and lived in seclusion in the mountains. After entering the Ming Dynasty, he could not be summoned many times. In the tenth year of Hongwu (1377), Taizu of the Ming Dynasty died at home. When he returned to seclusion, he built a house as a study room, and his study room was named "Zhen Su Zhai", and scholars called him Mr. Zhen Su. His poems are rich in ancient times and are not stained by the habit of delicate weaving. The calligraphy is particularly simple and unsophisticated, and those who know it think it comes from the Han official method. There are seven volumes of "Huayang Zhensu Zhai Collection".