Therefore, over the period between the trade between Japan and China's Sung Dynasty ended and the trade between Japan and China's Ming Dynasty was established (between the late Kamakura period and the period of the Northern and Southern Courts in Japan), the economical and cultural exchanges had become active between Japan and the Yuan Dynasty despite of the political tension between the two countries.
このため、日宋貿易終焉後、日明貿易成立に至る時期（日本の鎌倉時代後期・南北朝時代(日本)に相当）も日本と元の間には政治的対立とは全く別に経済的・文化的交流が盛んになっていった。