During the Kamakura period, the intercommunication with China which was interrupted since the abolishment of Kentoshi (Japanese envoy to China in the Tang Dynasty) began and trade with the Sung (dynasty) became active.
鎌倉時代に入ると、遣唐使を廃止して以来、途絶えていた大陸との交流が開始され、宋(王朝)との交易が盛んとなった。