However, the Mongol envoys (chief envoy Kokuteki and vice-envoy Inko), guided by So Kunhi and Kinsan from Goryeo, returned due to the difficulty of the voyage after reaching Geoje Island, and explained to Kublai that it was unnecessary to send envoys to Japan.
しかし高麗の宋君斐・金賛が案内する蒙古の使節ら（正使・黒的、副使・殷弘）は巨済島まで来て、航海の困難を理由に引き返し、クビライに対して日本への通使の不要を説いた。