Sun Guiguo, Zi Xiyuan, national first-class artist, member of Shandong Artists Association, director of Weifang Artists Association, member of Weifang Calligraphy Association, vice president of China Yangjiabu Painting Academy and vice president of Shandong Oriental Chen Long Painting and Calligraphy Institute. At present, the price of a painting and calligraphy work by Sun Guiguo is 6,000 yuan per square meter, and there is still a lot of room for appreciation in the future, which is worth collecting.