How about Du Yuguang's calligraphy?

Calligraphy is very good. According to relevant data, Du Yuguang is a member of the Professional Committee of Painting and Calligraphy Education of China Painters Association, a member of China International Painting and Calligraphy Research Association, a member of China Hard Pen Calligraphy Association, a national art test tutor of China Arts and Crafts Institute of the Ministry of Culture and Tourism, a member of the Art Design Education Branch of China Life Science Society, and a lecturer of painting and calligraphy in universities. Du Yuguang's calligraphy is very good.