A vast empty sky. The only thing that can be found in the vast sky is the clouds. But unlike the ground, although we can see them, we cannot stand on them. We cannot touch them. In a way, it is almost as if they do not exist. They change their form and shape as well as change the appearance of their surroundings. They can choose to hide the sun or choose to let it's rays shine through. Certainly, there are no two clouds exactly alike.