ChangPoGo and Maritime Trade
During the United Silla period, demand for foreign civilization was strong due to social changes. Because government-led trade was insufficient in satisfying rising demand, private trade started to emerge. ChangPoGo developed and promoted transnational free trade for the world.
He imported items from China and exported goods from Korea and Japan to China while trading a variety of daily goods with Japan.
Chang also actively promoted intermediary trade by exporting goods that had been manufactured in Arab countries or Southeast Asia and importing from China to Japan.
Jeoksan Beophwawon
This temple was built by ChangPoGo in the early 820s. It was located in Jeoksan, Shandong, China, which was well-known as an international trade port at the time. It was an emotional backbone for the Silla people in Shandong and a shelter for monks from Silla and Japan. This temple was a place for cultural exchange in Northeast Asia.
Yangzhou
Yangzhou, a city of canals located on the Yangtze River, had long been a center of international trade and was a final destination of the 'Maritime Silk Road', which linked to the Korean Peninsula and Japan.
Ningbo
Ningbo had long been an important international intermediary trade port since ancient times. A great deal of goods was exported to Korea and Japan from this port while Sinan vessels, viewed from the Sinan Offshore, also departed for Japan from this port. ChangPoGo's main trade item, Haemurigup porcelain (a flat, footed piece with a hollow centre) was produced and exported from here. Production know-how was transferred to Korea and in turn became the base for developing Goryeo Cheongja. As a result, the world's best 'jade-green porcelain' was born in Korea.
Hakata
Historic ruins of ChangPoGo are found in Hakata (Fukuoka). As a national organization supervising negotiations with Korea and China, it was the first destination in Japan for officials and trade dealers. Hongnyeogwan was a guesthouse for them.