It seems that only through the resonance effect formed by gathering specific materials can unseal the box containing the Essence of Earth. Let's go back to the location of where the Essence of Earth is sealed and find a way to unseal it.

Quest complete conditions

Unseal the first seal
Unseal the second seal
Unseal the third seal
Unseal the fourth seal

Quest Rewards

EXPContribution EXP (50)

Essence of Earth