真难

Zhen Nan is an author about whom little public information is available. Five of the author's works are held in the collection, generally classified as foreign literature. Judging from the representative titles, Zhen Nan is best known for the "Hosui Rintaro Detective Series," which is intended to run to eight volumes; several of these are present, including the opening volume, The Afterglow Murder Case, the fourth volume, The Dream Hall Murder Case, the fifth volume, The Lost Paradise Murder Case, and the eighth volume, The Mermaid Mystery: The Aoiwa Murder Case. These titles indicate that the works center on murder cases investigated by the detective Hosui Rintaro and belong to mystery fiction with a strong puzzle element. Because the author's real name, nationality, and dates of birth and death are all unknown, biographical details cannot be established, and readers can only approach the writing through the works themselves, which emphasize case design, atmosphere, and continuity of the series characters.