Ключевые слова: asia, background, beautiful, birch, bush, chengde, china, color, concept, creative, dam, ecological, environment, farmland, farms, features, fields, forest, forest land, full of energy, green, hebei, landscape, leisure, material, nature, outdoor, park, pasture lands, pure and fresh, quiet and calm, saihanba, scenery, season, shadows, summer, trees, trunk, vibrant, weeds, white, white birch, wild, woods,