This conclusion was extremely important to little crane grass. He finally knew what could be stored in the medium and what couldn't. For example, ordinary soil and stones could be stored in the medium because they contained a certain amount of natural energy. Moreover, the natural energy contained in them was not active, so they could also be stored in the medium.
Little crane also kept some of the soil and rocks into the medium. However, he soon realized that the soil and rocks could absorb natural energy after being stored in the medium. Little crane grass was curious. He really wanted to see what would happen to the soil and rocks after absorbing natural energy.
