The red sun has passed for nine days
The green mountains and flowing water have turned into mountains
Analysis: The red sun has passed for nine days, of course, there is no red left, and the sky is blue;
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Green mountains, flowing water, and water turn into mountains. The water is green, the mountains are green, and the water wraps around the green mountains. If water is the main component, it is green. The green water reflects the sky, and the sky is blue. Of course, everything is blue.