According to the record in the Encyclopedia of Painters and Calligraphers, Gu Xisuo is a famous calligrapher, and his different autographs may be because he used different autographs for different works in different periods. For example, he used the word "Gu Xisuo" as his signature in cursive script and "Geng Fu" as his signature in running script.
Gu Xisuo, 1956, from Luoyang, Henan. Stage name Geng Fu, a layman in Songyang, is a famous calligrapher. At present, he is the vice chairman of China Poetry and Calligraphy Network, the consultant of Central Academy of Fine Arts, the president of China "August 1st" Painting and Calligraphy Institute, the vice president of Hong Kong and Macao Hanmo Painting and Calligraphy Institute, and the signing artist of "Ink Painting and Danqing Column" and "Famous Lectures" of Beijing Education TV Station. I was nominated as the permanent director of the local calligraphy association, but I declined. Calligraphy and painting works have won national awards for dozens of times and have been collected by the National Museum, Korea, Japan and more than a dozen other countries. The selected works were submitted to the National People's Congress and reported by 109 news media, which had a great influence and became an internationally renowned celebrity in painting and calligraphy.