Is there a Sichuan calligrapher named Jianhua? I don't know his last name.

You mean Zhao Jianhua? Zhao Jianhua (1935~) is a famous forest. Beijingers. 1988 graduated from China Correspondence College of Painting and Calligraphy. Member of World Calligraphy Association, member of China-Japan Friendship Hard Pen Calligraphers Association, director of Contemporary Hard Pen Calligraphers Association, member of China Hard Pen Calligraphers Association and director of Sichuan Branch, member of Sichuan Calligraphers Association, member of Chengdu Poetry Society and executive director of Shang Gu Shuhua Research Association.