Ключевые слова: autumn, autumn colors, baiyun, bashang, birch forest, blue, blue sky, chengde, city, cloud, crop, daylight, develop, farmland, forest, forest farm, grass, green, heaven on earth, hebei, highway, landscape, mountain, mountain forest, mulan paddock, natural beauty, nature, nonurban scenery, outdoor, peaceful, rural area, sky, small town, terrain, tidy, trail, unmanned, vacation destination, vehicle, village,