author
Best known for the fantasy novel Zhan Gui Zhuan, this Chinese author is remembered through a small surviving body of work rather than a well-documented public life.
Zhang Liu appears to be a historical Chinese novelist whose name is now most often encountered through Project Gutenberg and library records for Zhan Gui Zhuan (斬鬼傳). The novel is presented there as a work of fiction associated with the late 19th century, centered on the legendary demon-queller Zhong Kui.
Reliable biographical information about the author is scarce in the sources I could confirm. Because of that, it is safer to describe Zhang Liu as an obscure or little-documented author from the Chinese literary tradition, rather than make stronger claims about dates, career, or personal background.
That limited record is part of the intrigue: Zhang Liu survives in modern readers' hands mainly through the story itself, a supernatural tale that links folklore, satire, and classical-style adventure.