In fact, if this source-type Cocoon of Evolution could not only be used by insect-species feys, it would be rather useful for Lin Yuan's Source Sand.
This was because it could enhance the Heart-Penetrating Ironline that it had assimilated with its Gravel Spirit Acceptance.
It would reorganize the Heart-Penetrating Ironline—an alien insect with a very homogenous genetic model—and increase its head's sharpness and hardness.
Undoubtedly, it could make the Heart-Penetrating Ironline stronger without changing the original complexity of its genetic model. Unfortunately, the source-type Cocoon of Evolution could only be used by insect-species feys.
Furthermore, even if Lin Yuan's source-type Source Sand could use the Cocoon of Evolution, he would still leave the Cocoon of Evolution for Liu Jie to use. This was because it would be akin to a transformation of Liu Jie's strength.
