It is composed of 20 volumes and describes from Gojoseon to Goryeo.
[3] In 1756, the author began compiling at the age of 45 and completed the first draft in three years.
Afterwards, he exchanged opinions with his teachers and friends in a letter and revised the draft.
[4] The contents of the text were described in 'Gang-Mok' form, with important events marked in a 'Gang', and articles related to them were written down in a 'Mok'.
This article about a non-fiction book on Korean history is a stub.