The study of the historical characteristic of the CHUGOKU area brought about the alternating current with eastern Asia.

这一研究明确了中国地区与东亚交流的历史特征。为此，我们在日本海域（岩见银山、滨田、汤津、真田）、九州北方地区（嘉松、平户）、九州南部地区（萨须马、大隅）、琉球地区等进行了实地调查。同时，我们还对档案进行了全面的检索，在这一过程中，我们意识到从东亚带来的工艺美术品是非常重要的资料，因此，我们可以通过历史上的国际交流来确认目前被称为“边疆”的地区是繁荣的。

This study made clear the historical characteristic of the CHUGOKU area brought about the alternating current with eastern Asia. The method for its purpose was to tie views about the traffic and archives.Therefore, we implemented field investigation in the Japanese sea area, such as IWAMI-GINZAN, HAMADA, YUNOTSU, MASUDA, the northern KYUSHU area, such as KARATSU, HIRADO, the southern Kyushu area, such as SATSUMA, OOSUMI, and the RYUKYU area. Also, we searched archives completely.In these processes, we wakened that industrial art objects which were brought from eastern Asia are very important data.As a result, we could confirm that areas called "the frontier" at present were prosperous by the international exchange on the history.