Xu Cunyun carved a plaque for Zhou Huchen's Cao Sugong Pen and Ink Shop, a century-old shop in Fuzhou Road, Shanghai, which was inscribed by Mr. Xu Sihao, a famous calligrapher in Shanghai.
Xu Sihao, born in 1955, is a famous calligrapher in Shanghai. 1965 studied under the famous calligrapher Li Tianma, 1982 joined the China Calligraphers Association Shanghai Branch. He is an outstanding entrepreneur in Shanghai.