Ключевые слова: background, beautiful scenery, blue, blue sky, blue tone, ecological protection, ecology, environment, environmental conservation, gahai, gahaihu, gannan, gansu, grassland, green, haizi, herbage, highland, lake, meadow, plateau lakes, plateau meadow, plateaus blue, quiet, quietness, reflections, scenery, swamp, the blue sky and white clouds, the color of the day, the lake, the path along the cliff, vast, vista, water meadow, water surface, wetland, wetlands, white clouds,