Duan Renyuan is a Chinese book author about whom limited public information is available. Only one work by this author is currently held in the library collection, namely Economic Law (2nd Edition). Judging from the title and its common classification, the book is an exam-oriented title that covers knowledge related to economic law and is intended for exam preparation or course study. Because no confirmed information is available about the author's education, profession, or research focus, a fuller account of his life cannot be provided. Based on the available clues, Duan Renyuan's writing tends toward textbooks and study guides, emphasizing the organization of key points and practical exam usefulness, and is suitable for readers who need to review economic law content systematically.
