Jang Yeong Sil The Greatest Scientist of Joseon (Jang Young Shil / 장영실 / 蔣英實)

Yeong Sil engrosses himself in building a celestial globe, Honsang, to get on the boat sailing to Ming Dynasty. Meanwhile, Crown Prince Chungnyeong’s mention of the time disparity between the sundial and water clock arouses suspicion and controversy among