[Supung Dam] One of The world's largest Dams built in the present North Korean territory by Japan at that time. It is still in operation as an important source of energy for North Korea, and as a symbol of North Korea's strength it is designed in the National Emblem.of course, it is a top secret that Japan built it. Pyeongyang (Present Capital City of North Korea) The emerging industrial city, Hungnam. Factories such as Korea nitrogen fertilizer, Japan magnesium, Korea mining industry, and others established one after another. / Steel Company Onoda Cement Company /Pyeongyang Station Wonsan Girls High School [Movable iron bridge built across Yalu river] Japanese introduced the technology the first time in Korea, not in Japan, and raised the convenience of shipping traffic. http://hontonorekishi.blog.fc2.com/blog-entry-10.html