With the help of Hochu, who was dispatched as an envoy of Yoshitane ASHIKAGA, the seii taishogun (literally, "great general who subdues the barbarians") of the Muromachi bakufu (Japanese feudal government headed by a shogun) under the guardianship of Yoshioki, the So clan negotiated the resumption of the relationship with the Korean Dynasties.
そして、義興が後見する室町幕府征夷大将軍足利義稙の使者として派遣された弸中の助力を得て通交再開の交渉を行った。