"So this is the Civilization Library? It records all the knowledge of a civilization from the past to the future..."
Chu Xiu was really curious about what exactly this thing was, what its principles were, and how it operated. But he also knew that this level of power was far beyond his current understanding.
As he pondered, flipping through it, his fingers suddenly paused, stopping at a building shrouded in thick fog, where its specific appearance was unclear.
[Building "Cross-Realm Double Passage Gate": Unlock when civilization scale reaches 3600K.]
Seeing these words in front of him, Chu Xiu rubbed his chin once more.
From Vengeance's description, it was easy to discern that the [Cross-Realm Double Passage Gate] was a threshold!
Before having this building, civilization had to rely solely on its own efforts for development, at most depending on the Awakened to transport some materials.
