Jeong Yak-yong (丁若鏞, August 5, 1762 (June 16, 1762) to April 7, 1836, 1836 (February 22, 1836) was a civil servant, writer, poet, philosopher, scientist, and engineer of the late Joseon Dynasty.

It contributed greatly to laying the foundation for modern engineering in the Joseon Dynasty. In addition, Jeong Yak-yong integrated the ideas of Silhak, which came down through the interests of Hyungwon and Seongho, into one body.

Books related to Neo-Confucianism, astronomy, geography, history, industry, and clothing, as well as "Gyeongse Youpyo," "Mokminsimseo," and "Humheum Sinseo" are all examples of social, economic, and ideological affairs, which can be said to be the result of "multi-academics."

In 2012, Jeong was selected as a UNESCO World Cultural Heritage along with Russo and Hesse.

Lee Seong-gye (October 27, 1335 (October 11, 1335) to June 18, 1408 (May 24, 1408) was the first king to be a shaman, politician, and founder of Joseon.

Lee Seong-gye became famous for his distinguished military service in the war against Japanese pirates and the Red Turban Invasion of Korea at the end of the Goryeo Dynasty. The Yuihwado Rebellion eliminated King Wu and Choe Yeong and took political and military power in one hand.

In conjunction with emerging political forces, the new dynasty 'Joseon' was founded to replace Goryeo. He was reigned for seven years from 1392 to 1398, and was succeeded by King Jeongjong, the second king, in the wake of the prince's rebellion.