Ключевые слова: ancient, architecture, asia, asian, beijing, beijing china, border, brick, china, chinese, cliff, culture, defense, disrepair, famous, great wall, great wall of china, hebei, heritage, hiking, hill, hilltops, historic, history, huairou district, imperial china, jiankou, jiankou great wall, jiankou wall, landmark, landscape, ming, ming dynasty, mountain, mountains, nature, obstacle, old, peking, rock, scenery, scenic, stone, tourism, tower, travel, unesco, unrestored, wall, wonder,