Liu Ziyu: publicly available information is limited, and the confirmable details come mainly from two representative works, Ancient Chinese (Volume One) and Ancient Chinese (Volume Two). In library classifications, these two works fall under language and writing as well as examinations, indicating that their content both presents systematic instruction in ancient Chinese knowledge and takes into account learners' revision and exam preparation needs. Judging from the titles and classifications, the books address beginning and intermediate readers of ancient Chinese and may cover basic areas such as script, phonology, vocabulary, grammar, and selected texts, with an emphasis on understanding and using classical Chinese materials. Divided into two volumes, the work is convenient for teaching arrangements and self-study, and is suitable as a course textbook or examination reference. Because details of the author's life and academic background are currently unavailable, no speculation is made here; this note briefly introduces the subject matter and purpose of the works for readers' reference.