Is Zhang Liuqing's calligraphy worth collecting?

Zhang Liuqing's calligraphy is worth collecting. According to relevant public information, Zhang Liuqing, a famous calligrapher, 1949, is from Yuzhou, Henan, and now lives in Beijing. Dean of China National Painting and Calligraphy Institute (director level), director of Shenzhen Office of People's Daily Shenzhou Painting and Calligraphy Institute (director level).