rightfully belonged under Goryeo's domain. In a cleverly veiled threat, Seo Hui reminded General Xiao that the Liaodong Peninsula had also once been under the dominion of Goguryeo and that the Manchurian territories, including the Khitan capital at Liaoyang, should properly belong to Goryeo. In a remarkable conclusion, minister Seo obtained Khitan consent to allow the region up to the Yalu River to be incorporated into Goryeo territory. General Xiao and the Khitan army not only returned to Liao without having achieved their goals, but the invasion ended with the Khitan giving up territory along the southern Yalu River to Seongjong. Seo Hui's brilliant diplomatic maneuver underscored his correct understanding of both the contemporary international situation and Goryeo's position in the region. The Khitan withdrew and ceded territory to the east of the Yalu River when Goryeo agreed to end its alliance with Song Dynasty. However, Goryeo continued to communicate with Song, having strengthened its position by building fortress in the newly gained northern territories. The Goryeo-Khitan Wars continued with the second and third campaigns until 1018. Death He died of disease in November 997 and was succeeded by his nephew, Mokjong. Family Father: Daejong of Goryeo (고려 대종) Grandfather: Taejo of Goryeo (고려 태조) Grandmother: Queen Sinjeong (신정왕후) Mother: Queen Seonui (선의왕후) Grandfather: Taejo of Goryeo (고려 태조) Grandmother: Queen Jeongdeok (정덕왕후) Sister: Queen Heonae (헌애왕후) Sister: Queen Heonjeong (헌정왕후) Consorts and their respective issue(s): Queen Mundeok of the Chungju Yu clan (문덕왕후 유씨); half first cousin – No issue. Queen Seonjeong (선정왕후); step daughter Queen Munhwa of the Seonsan Gim clan (문화왕후 김씨) Queen Wonjeong (원정왕후) Lady Yeonchang of the Gyeongju Choe clan (연창궁부인 최씨) Queen Wonhwa (원화왕후) In popular culture Portrayed by Kim Myung-soo in the 2009 KBS2 TV series Empress Cheonchu. See also Rulers of Korea History of Korea First Goryeo-Khitan War References Lee, K.-b. (1984). A new history of Korea. Tr. by E.W. Wagner & E.J. Schulz, based on the Korean rev. ed. of 1979. Seoul: Ilchogak. . 961 births 997 deaths 10th-century Korean monarchs