In Pyongyang, the capital of the Democratic People’s Republic of Korea, greening the roofs of buildings is briskly under way so as to blend the buildings and nature into one and provide the citizens with an excellent ecological environment.
In Pyongyang, the capital of the Democratic People’s Republic of Korea, greening the roofs of buildings is briskly under way so as to blend the buildings and nature into one and provide the citizens with an excellent ecological environment.
