Song Zhizhong: The word Wu Bai is the stone of dreams. Born in February, 1943, a native of Yixing, Tianjin. A famous seal engraver of calligraphy and painting, one of the representatives of Qi School, is a disciple of Qi Liangchi, the fourth son of Qi Baishi. He is currently an art consultant of Qi Baishi Art Research Association, president of Beijing Jinghua Printing Society, inheritor of Beijing intangible cultural heritage (Yingtuo and Qipai seal cutting), member of Beijing Calligraphers Association, and honorary director of Korea Seal Cutting Research Association.