Ключевые слова: ancient, architecture, asia, asian, background, barrack, barrier, beautiful, beijing, blue, border, boundary, brick, china, chinese, construction, culture, famous, foggy, fort, fortification, great, greatwall, hazy, heritage, hill, historic, history, landmark, landscape, ming, mountain, mutianyu, old, oriental, outdoor, passage, pollution, protection, ruins, scenery, sky, spring, stone, structure, sunny, tourist, tower, travel, unesco, unrestored, wall, watchtower, wonder, world,