Through the information provided by the old ice pops, Ren Zhong already knew that humans had developed in the bustling Star Zone for a full ten million years.
But it was obvious that both the Mechanical Empire and the other three major forces had hit the most despairing technological wall of the civilization's great filter.
The four different routes taken by humans were all tightly confined by this invisible wall.
If not, the wars between the four Star Countries should have already determined a victor.
This wall objectively exists, but the reason for its existence is still unknown.
It could be that the intellectual limit of humans, as carbon-based life forms, is destined to stop here.
It might also be that the material resources in this starry sky limit the height of science from a materials science perspective.
