Cold dew is white, autumn grass is yellow, and it is a good time on earth! what's the meaning

Cold dew is white, autumn grass is yellow, indicating a good season on earth. It means that the cold dew is coming, the weather is getting colder and colder, and the autumn grass is gradually turning yellow (the fate of all plants must come and go with each season). Spring is warm in bloom and autumn is solid. Autumn harvest and winter storage season have arrived, and autumn is crisp. This autumn harvest and cool and pleasant natural scenery are great times on earth.