Ключевые слова: ancient, asia, asian, backpacking, badaling, beijing, blue, border, bright, built, china, chinese, day, defence, east, engineering, famous, feats, fronteer, great, greatwall, hike, hill, historic, huang, jiankou, jinshaling, jinshanling, landmark, look, mandarin, mega, mountain, mutianyu, old, peking, simatai, stone, structure, sunny, tourism, tower, travel, trek, walk, wall,