Zhu Ziqing's "Classics" was published in 1942 and has been widely circulated for decades, becoming a classic that popularizes ancient Chinese literature, history, and philosophy. The book has 13 chapters in total. According to the order of classification of ancient Chinese classics, histories, zis and collections, it introduces classic works such as "Shuowen Jiezi", "Book of Changes", "Shangshu" and "Book of Songs" respectively. It also outlines the situation of hundreds of schools of thought, Ci and Fu and poetry of the past dynasties, so as to show the basic appearance of ancient Chinese thought and culture. The book's combing and explanation of classics is concise and insightful in terms of knowledge, popular and fluent in writing, and insightful in insights. It can make readers feel closer and more familiar with ancient texts, and thus generate interest. It is a classic guide for readers to understand ancient Chinese cultural classics, and is also an excellent introductory book for Chinese studies.