The problem of obtaining Undead Energy could be said to be the greatest weakness of the Undead units at this stage.
When Undead Energy was abundant, the Undead units' sustained combat capability was frighteningly powerful. But under normal circumstances, what country could possibly have that much Undead Energy?
To put it bluntly, the most suitable environment for the Undead to survive in was a mass grave.
In fact, the Undead Habitat that Zhou Xu had ordered people to bury countless skeletons and construct was more or less the same kind of place.
However, expanding it further was practically impossible.
Because over the years, they had discovered a problem: Undead Energy was incompatible with anything alive.
If they continued expanding it, the area would become a completely dead land because the Death Qi within it would grow too dense.
By then, the Death Qi in the area might even become so concentrated that it would begin spreading into the surrounding regions, corroding the nearby land.
At that point, the fact that not a blade of grass could grow there would be the least of their concerns. Ordinary living people would not be able to endure staying there for long.
From this perspective, what the Undead actually needed was an entirely independent "autonomous region," preferably one normally isolated from the rest of the world.
But frankly speaking, it was difficult to find such a place within Great Zhou's borders—an uninhabited wasteland that would not affect the Undead's subsequent development within it.
If they really wanted to do that, then in the future, when they had the opportunity, finding a sufficiently large island overseas for them might be more suitable.
Of course, even if they were going to do that, it would be a matter for later.
At present, the Undead units on