Although the reasons for and the background to these tributes by Wakoku remain unclear, it is thought they may have been to provide an advantage in the competition over interests and rights in the kingdoms of the southern Korean Peninsula (the Gaya Confederacy) and in fact, Chinese sources mention Wakoku's hegemony over the southern Korean Peninsula.
朝貢を行った理由・背景は明確にはなっていないが、おそらく朝鮮半島南部諸国（任那・伽耶）に於ける利権争いへの参入を有利に進めるためであろうと考えられており、実際に中国史書には倭へ朝鮮半島南部の支配権を認める内容を記している。