Extraction code:? 8sjy Today, the Thirteen Classics, as an ancient book reflecting the historical situation in the pre-Qin period, still has high value. They are The Book of Songs, Shangshu, Zhou Li, Yi Li, Li Ji, Zhouyi, Zuo Zhuan, Gongyang Zhuan, Gu Liangzhuan, The Analects of Confucius, Erya, Xiao Jing and Mencius.