Who is this calligrapher? Thank you.

The seal is "Xie Jijun Seal".

Xie Jijun, male, 1943 was born in Leibo, Sichuan, and his ancestral home was Shiyan Bridge in Longchang, Sichuan. National first-class artist, member of China Calligraphers Association, member of creative committee, professor of calligraphy training center, librarian of Sichuan Provincial Government Literature and History Research Institute, deputy director of creation evaluation committee of Sichuan Calligraphers Association, vice president of Shudu Painting and Calligraphy Institute of United Front Work Department of Chengdu Municipal Committee, vice president of Chengdu CPPCC Painting and Calligraphy Research Institute, special artist and art committee member of Sichuan Poetry and Calligraphy Institute, painter of Chengdu Painting Institute, consultant of Chengdu Calligraphers Association, consultant of Sichuan Poetry Society, and foreign exchange of Sichuan Province. The first influential representatives of Bashu Painting School.