According to one belief, the five Kings of Wa, who intended to intervene in Gaya, located in the southern part of Korea, for acquiring concessions of natural resources there from the latter half of the fourth century, dispatched an envoy to China to submit to a suzerain-vassal relationship with the Chinese sovereign so that they might make use of such a relationship on the pretext of their intervention in Korea.
倭の五王による中国への冊封要請遣使は、4世紀後期から倭国が朝鮮半島南部の伽耶諸国群へ資源・利権獲得のために介入しようとしたため、その地の冊封を受けて大義名分を得ようとしたものと考えられている。