He reined in that thought, and then began to gather most of the Divine Force from his Divine Aperture World, transforming it into an engraving knife. This time, the knife he formed was the sum of all the Divine Force he could muster. Any additional Divine Force was required to maintain the operation of the Divine Aperture World; taking any more could cause its collapse.
The knife touched the bottom of the stele, starting to carve, but to his shock, the hardness of the stele was too terrifying. No matter how much he ground the knife, it left only a single scratch.
It was worth noting that this was a condensation of nearly all his Divine Force; even if it were a Great World that the knife poked, even the firmest world barrier would be pierced through.
He persisted for a whole day, yet he managed to carve only a shallow character mark.