Under the Chinese notion of "Tenka" during the era of Goryeo, Sung was called the Southern Court and Liao or Jing was called the Northern Court since Sung and Liao or Sung and Jin co-existed in China.
一方高麗時代の中国的「天下」概念では、中国内部に宋・遼、宋・金が並び立つ情勢のなか、宋を南朝、遼・金を北朝として両属する形を維持していた。