Is the calligraphy of Shimenshan people valuable?

Worth some money. Shimenshan's calligraphy "Love My China by Name" was auctioned for 500,000 yuan, which is very valuable. Chen, pen name, 1936, Qingtian, Zhejiang, member of China Painters Association, director of World Painting and Calligraphy Association and director of organization department, director of painting and calligraphy room of Huangpu Military Academy in Shaanxi Province, honorary president of Jiangxi General Painting and Calligraphy Institute.