Zuohuasanren

Zuohuasanren appears to be a pen name rather than a fully identified personal name. Project Gutenberg lists the alias 坐花散人 and credits this author with 風流悟 (Feng liu wu), a Chinese novel.

The book is described there as a historical novel, and Gutenberg notes it as the only work it currently has under this author name. Beyond that, readily available reliable sources found here do not confirm clear biographical details such as birth and death dates, hometown, or a fuller life story.

Because the historical record available in the sources I checked is so limited, the safest picture is of an author remembered mainly through a single surviving attributed work and an evocative literary pseudonym.