Fang Jiekan (1901--1987), famous for his famous rock, is famous for his words. Don't sign up for the Jade Seal Building. An outstanding seal engraver of the 20th century. He once served as professor at Shanghai Fine Arts College and Xinhua Art College, vice president of Xiling Seal Society, honorary director of the Chinese Calligraphers Association, and consultant of the Sino-Japanese Lanting Calligraphy Society. Fang Jiekan came from a humble background. He came to Shanghai in 1926 and won the appreciation of Wu Changshuo and Zhao Shuru for his superb printing skills. He was hired by Liu Haisu as a professor at the Shanghai Academy of Fine Arts. From then on, he entered the art circle and developed deep friendships with Huang Binhong, Ma Heng, Jing Tingyi, Wang Fuchang, Pan Tianshou, Xu Beihong, etc. In particular, he and Zhang Daqian, the master of traditional Chinese painting, respected each other, and their paintings complemented each other and became a good story in the art world