Ключевые слова: abstract, ancient, architecture, asia, asian, background, badaling, beijing, border, brick, china, chinese, culture, defense, dynasty, famous, great, heritage, hike, hill, historic, history, jinshanling, landmark, landscape, mountain, mutianyu, nature, nobody, old, oriental, outdoor, protection, sky, stone, structure, sunset, tourism, travel, wall, wonder, world,