" The school year started in September, with a long vacation in the winter, not the summer, due to the difficulty of keeping the schools warm in North Korea’s harsh winters. My kindergarten had a large wood-burning stove in the middle of the classroom and walls painted with colourful scenes of children performing gymnastics, children in uniform, and of a North Korean soldier simultaneously impaling a Yankee, a Japanese and a South Korean soldier with his rifle bayonet. "

― Hyeonseo Lee , The Girl with Seven Names: A North Korean Defector’s Story