Zhou Mudan is a Chinese author about whom limited public information is available; the verifiable details come mainly from the work published under this name, Linear Algebra. Existing records place the book in the exam-preparation category, indicating that it is written for readers who need to review and prepare for examinations and who wish to organize their knowledge of linear algebra systematically. As a foundational course in science, engineering, economics, and management, linear algebra involves abstract concepts and considerable computation, so the author's aim is likely to present the material in a clear, well-structured, and review-friendly way that helps readers grasp the core content within limited time. Since no public information is available on the author's education, professional positions, or research interests, this introduction makes no speculation and describes only the subject and purpose of the signed work. Readers may regard the book as a study aid for linear algebra in examination settings, while its actual style and suitability should be judged from the specific edition.