Green slowly walked out of the Library, carefully recalling the details he had read about invading the Central Region.
When it came to launching an invasion of another world, the Central Region and the East Coast differed in certain ways. The Central Region had more powerful Wizards, and its methods of invading other worlds were entirely different from those of the comparatively old-fashioned East Coast.
Although the contraction of the Wizarding World had made it difficult for the Central Region to open a World Passage, the situation was not the same as the East Coast's complete closure. Since the Ancient Era, Wizards in the Central Region had occasionally experienced World Overlap. In such circumstances, they had refined various methods of invading other worlds.
Wizards in the Central Region had created an Origin Force Device that condensed a great deal of the Wizarding World's Origin Force. All they had to do was send this device into another world, then undo its Seal. The Wizarding World's Origin Force would pour out in an instant, creating a vast blank area where the other world's Suppression was absent.
For a short time, that area would be equivalent to the Wizarding World. High-Ranking Wizards could unleash their full strength there, making it easy to establish a bridgehead and gain a foothold in the other world.
The Sky Cities of the Central Region's Sixth-Level Wizards were also mostly built on this principle. By carrying a vast quantity of the world's Origin Force, they could force their way into another world and use the overwhelming power of Sixth-Level Wizards to seize territory right from the start.
Simply put, it let them bypass the world Suppression that gave Wizards the biggest headache.
There was no need to send Low-Level Wizards into a war of attrition to weaken the