Ключевые слова: ancient, architecture, asia, asian, beijing, brick, china, chinese, culture, defense, emperor zhu yuanzhang, famous, financial assistance, general xu da, great, great wall, henkel, heritage, hill, historic, history, huairou district, landmark, landscape, ming dynasty, mountain, mutianyu, nature, old, sky, stone, structure, tourism, travel, wall, wonder, world,