Ключевые слова: agricultural, asia, attractions, autumn, beautiful, blue, bright, chengde, china, color, concept, creative, dam, ecological, environment, fresh, full of vitality, grass, grassland, green, hebei, hill, landscape, material, natural, north, outdoor, pastoral, plants, ranch, scenery, sky, summer, sun, sunny, tourism, travel, trees, vegetation, white clouds, wide angle,