We were the same back then. We cut down trees to make steel. Look at Google Maps and you will know that the mountains in North Korea are all bare. There are many reasons for the serious destruction of vegetation in North Korea. 1. Most of the fields on the Korean peninsula are on the Korean side. In order to get more food, we can only cut down forests and turn them into farmland. Second, the fuel is insufficient, and firewood can only be used as fuel for heating in winter.