The Sung Dynasty (960-1279) which was established in 960 placed shihakushi (the public office that operated on trade on the sea in China from Tang-Dynasty period to Ming Dynasty period) in various places, and traded with Japan and Korea, and it also did the trade between China and countries in the southern area.
960年（天徳(日本)4年）に成立した宋（960‐1279）は貿易を振興する目的で各地に市舶司を設置し、日本、朝鮮との貿易や南海貿易を行った。