2. Spring and Autumn Annals. The Six Classics is one of the Confucian classics in ancient China, and it is also the first chronological history book and prose collection in China. Chunqiu mainly tells the history of Lu. Legend has it that this book was written by Confucius, that is, "King Wen was arrested as Zhouyi and Zhong You as Chunqiu". The language of Chunqiu is concise. Since it was written, many people have made notes for it for future generations to study.
3. Purple Tongzhi Sword. The History as a Mirror written by Sima Guang is intended to let emperors choose stories by choosing historical figures, so as to standardize their words and deeds and further improve their skills. The complete book Zi Tong Zhi Jian was written in the Eastern Zhou Dynasty from the time of King Wei Lie to the late Five Dynasties. The book is rich in content, detailed and appropriate, and has high learning value.