Liu Yufeng, whose publicly available information is currently limited, appears in the library's records as the author of the book Advanced Mathematics. Judging from the existing information, the book is classified under examinations and serves the study and test-preparation needs of those whose exams include advanced mathematics. As the author, he undertakes the task of organizing foundational content such as limits, derivatives, and integrals into textbook-style material that is convenient for review, balancing knowledge consolidation with exam-oriented practice. Works of this kind usually emphasize clear concepts, representative worked examples, and well-matched exercises, helping readers build a knowledge framework and become familiar with common question types within a limited time. Since there are no reliable records of his life, nationality, education, or awards, this introduction does not speculate about his personal history or exaggerate his academic standing; it only describes the editorial orientation reflected in the library's copy, and his fuller profile awaits more public information.
