Before revision: The rulers of Goryeo used the titles of emperor and Son of Heaven and positioned Goryeo at the center of the Haedong (海東; "East of the Sea") tianxia, which encompassed the historical domain of the "Samhan", another name for the Three Kingdoms of Korea.
After revision: The rulers of Goryeo used the titles of Holy Emperor-King and Son of Heaven and positioned Goryeo at the center of the Haedong (海東; "East of the Sea") tianxia, which encompassed the historical domain of the "Samhan", another name for the Three Kingdoms of Korea.