After Japanese Invasion of Korea in 1592 was over and the situation was coped with, Chang-Kyoung Palace and Chang-Duk Palace were rebult, and In-Kyung Palace and Kyung-Duk Palace were built during the reign of Kwang Hae Kun. Many utilitarians were engaged with the construction as a manager, and they devoted themselves to improve technology. As a result, craftsmen were treated so valuable, compared to the past, that they were consulted about the technical problems under construction, the process of making an estimate, and the management of construction materials. Moreover, famous craftsmen obtained the government service. And there were various attempts on organizing and compensating workmen in order to manage them efficiently. In addition, the know-how of manufacturing a blue tile, which had been failed to succeed due to the war, was revived, and manufacturing a yellow tile, which had not been used, was studied by utilitarians. Finally, There were many kind of technical attempts and development under the construction of palaces, which gave utilitarians a chance to express their ideas, expected practical science, and assembled craftsmen who had scattered due to the war, during the reign of Kwang Hae Kun

의궤는 조선전기부터 제작된 것으로 기록에 나타나지만, 현존하는 의궤 중 가 장 오래된 것이 선조대 후반에 제작된 것들이다. 따라서 광해군대에 제작된 의 궤는 현존 의궤 중에는 상당히 시기가 오래된 것으로 분류된다. 광해군대에 제 작된 주요 의궤는, 1) 선조의 국장, 부묘, 묘호 개상, 존호와 관련 의궤, 2) 명나 라 사신을 영접한 의궤, 3) 생모인 공성왕후의 추숭에 관계된 의궤, 4) 화약무기 를 제작한 과정인 󰡔화기도감의궤󰡕, 5) 천문관측기구를 보관하는 흠경각과 보루 각 건축 의궤, 6) 제기 제작에 관한 의궤, 7) 󰡔삼강행실도󰡕를 새로 펴낸 과정을 정리한 󰡔동국신속삼강행실찬집청의궤󰡕 등이다. 이 중 󰡔화기도감의궤󰡕와 󰡔흠경 각영건의궤󰡕, 󰡔보루각영건의궤󰡕, 󰡔영접도감도청의궤󰡕는 광해군대에만 특별히 제작된 의궤들로서, 국방과 외교 분야에서 큰 성과를 이룬 광해군 정권의 성격 을 잘 보여주고 있다고 여겨진다. 광해군 재위 16년간 27종의 의궤가 편찬되었 다. 그런데 그 중에 6종이 명나라 사신을 접대하는 외교와 관련되는 의궤라는 점이 우선 주목이 된다. 광해군은 국방이나 외교, 과학에서만은 탁월한 군주임 에는 분명하였다. 명과 청의 세력교체라는 국제정세에 대한 정확한 인식을 바 탕으로 실리외교를 수행한 것이나 화기제작을 통해 국방 강화에 주력함으로써, ‘예견된 전쟁’을 슬기롭게 막는 능력을 보여주었다. 과학 중시의 사고가 그 바탕 에 있었음은 물론이다. 그의 시대에 제작된 󰡔영접도감의궤󰡕과 󰡔화기도감의궤󰡕, 󰡔흠경각영건의궤󰡕 등은 그 능력을 축소판처럼 보여주고 있다. 특히 광해군 정 권의 주역인 북인인 점을 고려하면, 북인의 학문적 원류가 되었던 남명학파나 화담학파의 博學, 실천 중시의 사상적 흐름이 광해군대의 국방, 외교, 과학적 분 위기와도 일정한 연관성을 갖는다고 할 수 있다.

The most influential figure, both in political and academical terms, in the period of the latter half of and the entire run of King SunJo's and GwangHaeGoon's respective regimes, was the Head of the Northern Faction at the time, RaeAhm Jung In-Hong. He was renowned as the most prominent figure of the Northern Faction during GwangHaeGoon's regime for his distinctive records of political actions and services, which included his taking initiatives back in the ImJin war crisis, his social background in the GyungSang WooDo area, his legitimate status in the academic society granted by his being one of Joe, Sik's disciples, and his unwavering loyalty for the King GwangHaeGoon. But his radical, straightforward attitude and political perspectives forced the opposing political parties to stand against him. He also promoted the cherishing project for his mentor Joe, Sik in a great hurry, which was also against the general consensus and wishes of the scholars. Hence, he became the primary target of the leaders of the revolution which had InJo as the new King, and was executed in the aftermath eventually. There were indeed some redeeming qualities in his life. He firmly maintained his principles of being loyal to the country, to the King, and to his mentor, although he had probably gone too far when he criticised TwaeGwae Lee, Hwang, or when he excessively insisted the executions of the convicted traitors to the country, in the process. Yet it is true that there have been too much of negative sentimentality and too many criticisms against him, which was in part actually engineered by the opposing Western Faction politicians at the time, who generally named him a rogue traitor. What was true, however, was htat he had also demonstrated certain personal principles and outright determination to stick to that principles throughout his entire life, which was also a typical trait for the Chosun SanRim scholars. More rational and reasonable evaluations of the character would be recommendable in the futrue. Efforts like that might also be instrumental in defining the political and academical position the Northern Wing personnels deserved to occupy in the history of the Chosun dynasty.