Zhang Aiguo's introduction.

Zhang Aiguo, male,1born in June 1967, was born in Huai 'an, Jiangsu. The pen names Du Yan include Xi Ying, Nanbei Jushi, Zizhulin Waishi, Zi Mansheng, Lao Ai, A Guo and so on. The names of Zhai Guan are Gezhai, Nanbeiju, Zibi Silver House, Ai Ai House, Ziman Silver House, Lefuya House, etc. For art, it advocates "the two poles complement each other and the combination of Chinese and Western". Graduated from China Academy of Fine Arts, majoring in calligraphy and seal cutting. He studied under Mr. Sha Menghai, Mr. Liu Jiang and Mr. Zhu Han. Associate Professor of Calligraphy Department of China Academy of Fine Arts, researcher of Modern Calligraphy Research Center of China Academy of Fine Arts, visiting professor of Japanese Gifu Women's University, member of China Calligraphers Association, deputy secretary-general of Zhejiang Calligraphy Education Research Association, deputy director of Education Committee of Zhejiang Calligraphy Association, and special painter of Xiling Painting and Calligraphy Institute.