The reason why I use words to make sentences is because of the history of Zhou, Qin and Han Dynasties. Different from later generations, there are many errors in copying and publishing, and there are many differences in sound and meaning, which brings great inconvenience to future generations' reading and understanding. So, I read the classics of ancient books, classified and summarized them, and discussed the sentence-making characteristics, interpretation methods, language habits and the causes of various errors in 88 ancient books. Every sentence should be exemplified in detail to clarify its meaning, so that readers can draw inferences from other words. It is a must-read book for beginners to learn Qin and Han ancient books. It is highly valued by researchers of ancient books and ancient Chinese. Five doubtful cases of proofreading and printing ancient books by Zhonghua Book Company 1956 volumes. The attached four books are supplements to the remaining works after publication. There are Liu's Example Supplement, Ma Xulun's Example School and Yao's Example Supplement, which can make up for the deficiency of.