In 1404, the Ming envoy sent by Emperor Yongle brought the Yongle Kangofu, on which the 'Seal of the King of Japan' was printed, to Yoshimitsu ASHIKAGA together with traditional Han Chinese clothing and a gold seal.
応永11年(1404)明(永楽帝)使、足利義満に冠服・金印とともに｢日本国王之印｣のある永楽の勘合符を送る。