The Koryǒsa chǒryo (Essentials of Koryǒ History) is one of the most important historical records of the Koryǒ kingdom (918-1392). Presented in 1452 and compiled under the leadership of Kim Chongsǒ and 28 men, it appeared one year after the publication of the Koryǒsa (History of Koryǒ). Compressed to 35 books, this is an abridged version of the Koryǒsa. The Koryǒsa chǒryo offers a chronological presentation of the events of the Koryǒ kingdom. As each year unfolds the Koryǒsa chǒryo captures the spirit and feeling of Koryǒ, recording the triumphs and trials of the dynasty. This history describes the actions of the kings, the life of the court and its aristocrats, abbreviated biographies of noteworthy individuals, changes to Koryǒ’s social and political institutions, foreign contacts, as well as such natural events as floods, famines, and earthquakes. This volume covers the years from 1147 to 1259.