The first book in Chinese history was the Spring and Autumn Annals, which was said to have been compiled by Confucius, the historian of the State of Lu. The Spring and Autumn Annals was a historical book that used the history of the State of Lu as a clue. It recorded the history of the Spring and Autumn Period from 1046 B.C. to 476 B.C. It was the first and one of the most important historical books in ancient China. The Spring and Autumn Annals, with "rites" as the core, made a detailed and in-depth description of the politics, military, culture, economy and other aspects of the Spring and Autumn Period, which became the foundation of ancient Chinese history.