The autuma is the best season to visit in Jiuzhaigou valley,because the autumn is
the most splendid season of Jiuzhaigou Valley. The colourful leaves and forests are reflected on the bright and clear lakes and fallen leaves are floating on the surface of water; the sky is vast and brightly blue. So many beautiful landscapes are created by nature.
In autumn all the mountains are tinged with red by tree leaves, which is extremely beautiful against the deep blue lakes Autumn is the most magnificent season of all in the Valley. The breeze is intoxicating, while the leaves turn crimson on the trees. The colorful red autumn leaves and woods are reflected in the sparkling translucent lakes - the fallen petals float in the water. The remote sky is clear and bright. Your eyes are filled with the most beautiful view of the natural world.
The leaves ususally change colours from tne end of September and falled at the end Octobet,that means the winter comes.