In the early Joseon Dynasty, the three generations of Kwon Keun, Kwon Do, and Kwan Lam, who were in charge of the official sentences of the country, compiled the books such as Ungjesi, Yeogdaesenyeonga, Yongbieocheonga, Ungjesiju, which wrote history in the form of poetry.
Kwon Keun showed the historical orthodoxy leading to Samhan, the Three Kingdoms, and Koryo after the Dangun and Kija and also tried to inform the necessity of the establishment of the Joseon Dynasty. He thought that Samhan led to the Three Kingdoms and the Kija led to Mahan, and he is pointing to the Taedong River as the land of the Kija.
Kwon Do's view of the place name of the past in the Korean peninsula is getting stronger, but the early Goguryeo is rather confirmed in the land of Liaodong. This tendency continues in Yongbieocheonga. In Yongbieocheonga, most of the place names appearing in the process of establishing Goguryeo are confirmed in the Korean peninsula, and Balhae is connected with Malgal. Centralism on the Korean Peninsula is strengthening in Yongbieocheonga.
Kwon Lam's book, in the Ungjesiju, the confidence of Joseon in the stabilization period is reflected, and the record of the uprising with China is recorded in detail. And it shows great interest in the Liaodong area, including the early designation of Hyendo and Goguryeo. The territorial awareness shown here contributes to the establishment of the territorial view that historians of the late Joseon Dynasty had.
Therefore, the recognition of historical geography in the traditional ballad books of the early period of Joseon can be said to have played an important role in establishing the territorial view in the early and late Joseon Dynasty.