Yuan Gui, the official residence, introduced.

Yuan Gui of Ci Fu, one of the four books in the Northern Song Dynasty, is an encyclopedia of political history. In the second year of Jingdezhen (1005), Zhao Heng, Song Zhenzong ordered Wang Qinruo, Yang Yi, Sun Ying and others 18 to compile the deeds of monarch and minister in past dynasties. Yuan Gui of Ci Fu, Tai Ping Guang Ji, Tai Ping Yulan and Wen Yuan Hua Ying are collectively called the "Four Great Books of Song Dynasty", and Yuan Gui of Ci Fu ranks first among the four books, several times larger than other books. Among them, the historical events of the Tang and Five Dynasties are the essence of Yuan Gui, and many historical materials are only seen in this book, even if they are repeated with the official history, they have collating value. "Ci Fu" is the place where emperors collect books, and "yuan gui" is a turtle, which was used to deify state affairs in ancient times. It means the reference for later emperors to govern the country. The book * * * has 1000 volumes, which are divided into 3 1 parts, such as emperor and leap position, and then divided into different departments. * * * has more than 1 100 doors. In A Dream of Red Mansions, Yuan Gui classified the deeds of monarchs and ministers from ancient times to the Five Dynasties according to their class status, with the aim of "legislating for the future, so that readers can learn from them". Select classics, history, Mandarin, Guanzi, Mencius, Hanfeizi, Huainanzi, Yanzi Chunqiu, Shilu Chunqiu, Han Poetry Biography, books of past dynasties, and Magnolia in Xiuwen Hall for classification and compilation. Combining chronological style and biographical style, * * * became 1,104 schools. There is a small command on the door, indicating its direction. Divided into emperor, leap post, usurper, monarch, palace, imperial clan, consorts, Zaifu, generals, Taiwan Province, national plan, constitutional officials, admonishers, ci ministers, national history, Zhang Li, schools, criminal law, prison clearance, sanitation, full election, tribute, envoys, internal ministers and officials. The Ministry has a general order, and words are made by the system. It has been written for eight years, with a total of 1000 volumes, and the title is "Yuan Gui in Bookstore".