He Changzhi, whose real name is Red Square, was named Hengling in his later years, a native of Guzhen, and the third son of He Weiwei. When I was a child, I was strictly educated by my family and loved poetry and music. After losing his father at the age of ten, he was determined to inherit the family business, so he studied Huang Zhi's art hard and became a famous doctor. In the 29th year of Daoguang (1849), he was flooded and moved to Songjiang Zhuanqiao. In his later years, he opened a clinic in Shanghai. He has trained more than 30 students and practiced medicine in Shanghai and Hangzhou. Guangxu died in Shanghai in the fifteenth year at the age of 68. He Changzhi is good at calligraphy, studying under Yan Zhenqing, and his handwriting is elegant and vigorous. It's hard to have ink plum in the world. Fang Mo is an artistic treasure, cherished by patients, doctors and calligraphy lovers, and also sought by Japanese people in many ways. His posthumous works include Biography of Continuing Doctors, Poems of Tongbai Lazy Farmers, Poems of Huanruting and so on.