Ключевые слова: ancient, architecture, asia, autumn, background, beijing, brick, bright, built, china, chinese, colour, day, defense, famous, frontier, great, greatwall, hill, historic, historical, horizontal, landmark, mountain, mutianyu, nobody, old, outdoors, places, ruins, scenic, sightseeing, simatai, site, stone, structure, sun, sunshine, tourism, touristy, tower, travel, wall, wonder, world,