Joseon missions to Japan represent a crucial aspect of the international relations of mutual Joseon-Japanese contacts and communication. In sum, these serial diplomatic ventures illustrate the persistence of Joseon's kyorin (neighborly relations) diplomacy from 1392 to 1910. The chronology of one side in a bilateral relationship stands on its own. This long-term, strategic policy contrasts with the sadae (serving the great) diplomacy which characterized the Joseon-Chinese relations in this same period.