The Tokugawa shogunate started trading again with the Korean dynasty by concluding the Giyu treaty with the So clan of Tsushima Island in 1609 and established a relationship of almost equality through mutual visits of Korean messengers and Japanese envoys.
徳川幕府は朝鮮王朝と対馬の宗氏の間に1609年己酉約条を結ばせ交易を再開、また朝鮮通信使と日本国王使の往来によりおおむね対等な関係を構築した。