King Taejong dispatched a diplomatic mission to Japan in 1409-1410.
1409 (Ōei 16, 3rd month): In the 10th year of King Taejong's reign, an ambassador from the Joseon court was received in Kyoto.[2]
This delegation to court of Ashikaga Yoshimochi was led by Yan Yu. The purpose of this diplomatic embassy was to respond to a message sent to the Joseon court by the Japanese shogun.[3] The Joseon envoy conveyed a letter of condolences on the death of the shogun's father; and he also brought gifts, including cotton cloth, tiger skins, leopard skins and ginseng.[4] Yan Yu was empowered to offer to send a copy of a rare Buddhist text to Japan.[2]
The Japanese hosts may have construed this mission as tending to confirm a Japanocentric world order.[5] Yan Yu's actions were more narrowly focused in negotiating protocols for Joseon-Japan diplomatic relations.[3]
Recognition in the West
Yan Yu's historical significance was confirmed when his mission was specifically mentioned in a widely distributed history published by the Oriental Translation Fund in 1834.[2]
In the West, early published accounts of the Joseon kingdom are not extensive, but they are found in Sangoku Tsūran Zusetsu (published in Paris in 1832),[6] and in Nihon ōdai ichiran (published in Paris in 1834). Joseon foreign relations and diplomacy are explicitly referenced in the 1834 work.
Kang, Etsuko Hae-jin. (1997). Diplomacy and Ideology in Japanese-Korean Relations: from the Fifteenth to the Eighteenth Century. Basingstoke, Hampshire; Macmillan. ISBN978-0-312-17370-8; OCLC243874305