《The collection of MangWuDang》(five volumes) is a collection of 36 poems including a four-line stanza, rhythm and 59 pieces of prose including letters, appeal, written report, and funeral oration.
《The collection of MangWuDang》contains several poems written by Kwak Jae Wu in the period after the Imjin Patriotic War and poems written by the posterity in praise of Kwak Jae Wu's exploits.
What is noteworthy in the《The collection of MangWuDang》 is that it reflects the patriotic spirit against aggression and the denunciation of the corrupted and incompetent feudal bureaucrats for their crimes against the nation based on their practical experience as volunteers in the battle sites for defending the security of the country.
It also reflects the psychological world of the author who tries to calmly end his remaining days after the withdrawal of political circles making a clean heart feel free from the irrational reality and contradictions of feudal society.
Volume 5 of the《The collection of MangWuDang》 is an appendix, which contains memorials written by several people after the death of Kwak Jae U and poems written by the posterity in praise of his exploits.
The poetic heritage inscribed in the 《The collection of MangWuDang》 is valuable data conducive to the study of the literature of anti-aggression patriotism during the Imjin Patriotic War.