Both envoys were dispatched as an addition to envoys to Silla; the first one was dispatched to give silent approval for the Tamna's subjection to Silla and the latter one was dispatched to investigate the situation there after the annexation of Hotoku (報徳国) to Silla.
両者とも新羅への遣使の副次として送られたもので、前者は耽羅の新羅への臣属を黙認するもの、後者は報徳国の新羅への併合を受けての動向探索のためと推察されている。