Actually, there were a number of Korean people who crossed the border, then negotiations between Korea and the Qing dynasty were held regarding protection of the Koreans even after Korea became the Korean empire, and the borders of the Tumen river and the Yalu river gradually became an accomplished fact.
実際にはこの「国境」を越えた清朝領域に越境した朝鮮人が多数に上ったため、彼らをどう保護するかという問題とも絡んで、この後大韓帝国となっても清朝との国境線画定の話し合いは断続的に行われたが、豆満江・鴨緑江を国境線とすることが次第に既成事実化していった。