A statue of military official and horse around tomb of Seongjong at Seolleung. This statue was established in 1495 as the construction of the tomb.Since Seongjong was only 12 when he was crowned, his grandmother Grand Royal Queen Dowager Jaseong, ruled the nation along with his biological mother Queen Insu, and his aunt (and adoptive mother) Queen Dowager Inhye. In 1476, at the age of 19, he began to govern the country in his own name.[2]After the death of his first wife in 1474, Seongjong decided to promote one of his concubines, Lady Yun, to the status of primary wife and queen.His reign was marked by the prosperity and growth of the economy, based on the laws laid down by Taejong, Sejong, and Sejo. He himself was a gifted ruler. In 1474, the Grand Code for State Administration, started by his grandfather, was completed and put into effect. Seongjong also ordered revisions and improvements to the code.He greatly expanded the Office of Special Advisors (Hongmungwan; 홍문관, 弘文館), an advisory council to the king, which also served as royal library and research institute; he strengthened the Three Offices (Samsa; 삼사, 三司) – Office of the Inspector General (Saheonbu), Office of Censors (Saganwon) and Office of Special Advisors (Hongmungwan)– as a check and balance on the royal court. For the first time since Sejong the Great, Confucian scholars whose political views clashed with those of the conservative officials (members of the nobility who had helped Taejong and Sejo in their rise to power), were brought to court. By appointing able administrators regardless of their political views, Seongjong made his rule more effective and his policies resulted in many positive innovations, increasing his number of supporters.The king himself was an artist and intellectual, and liked to argue about the finer points of politics with the more liberal scholars. He encouraged the publication of numerous books about geography and social etiquette, as well as areas of knowledge that benefited the common people.It was under Seongjong's reign that the "Widow Remarriage Ban" (1477) was enacted, which strengthened pre-existing social stigma against women who remarried by barring their sons from public office.[4] In 1489, Yi Gu-ji, a woman from the royal clan, committed suicide at his order and was erased from family records, when it was discovered that she had cohabited with her slave after being widowed.[5]In 1491, Seongjong started a military campaign against the Jurchens on the northern border, like many of his predecessors. Led by General Heo Jong (허종, 許琮), the campaign was successful, and the defeated Jurchens commanded by Udige (兀狄哈) retreated to the north of Amrok River.Death[编辑源代码]He died in January 1495 and is buried in the south of Seoul. The tomb is known as Seonneung (선릉) and 35 years later, his third wife, Queen Jeonghyeon, was also interred here. Seongjong was succeeded by his son, Crown Prince Yi Yung.