Their domain had been removed after they shattered the world around them. All that was left around them were numerous, expanding cracks.
These cracks are not large enough or deep enough to find the encrypted space in a normal situation. But the realm tree is weak and at death's door. Plus, they are not in an ordinary state either. They are almost at the level of world gods at this point, so it is easy for them to use what is available to discover the encrypted space.
Their Will moved, and cosmic force was injected into the small gap in the cracks. They didn't decipher the encryption but forced it open with cosmic force like a lever. A large tunnel opened before them, which they entered.
