< English Translation> Elucidating the changes of the universe in detail, Yi Jing, or Classic of Change includes three books, the Lian Shan System, the Gui Cang System, and Zhou Yi, but the first two have been lost. Shu Jing (Classic of History), also called Shang Shu (Esteemed Documents), is the first collection of ancient events in China, and the oldest Chinese historical source. The Regulation, the Counsels, the Instructions, the Announcements, the Oaths and the Charges are the profundity of the book. The text of Zhou Li (Rites of Zhou) is traditionally ascribed to the Duke of Zhou, and it is a collection the official system the Zhou Dynasty and national institutions of various states of the Warring States Period The Book set forth the duties of the six classes of officials, providing a blueprint for ruling a unified country. Scholars Dai De and Dai Sheng (nephew of Dai De) in the Western Han Dynasty sorted out and provided commentaries for Li Ji Classic of Rites), which mainly records and explains the etiquette code of the Pre-Qin Period. It takes etiquette and music as the core and involves many aspects, such as politics, philosophy, history, and so on.