After the external conflicts were resolved, internal conflicts would inevitably become further highlighted.
Especially the disputes over interests.
However, although this was also a significant challenge, for Human Civilization, it was much simpler.
Shen Hao even personally intervened, demonstrating the Emperor's pressure, directly eradicating entire civilizations that did not comply with the rules.
There was no massacre.
However, the survivors could only continue their civilization's heritage within other civilizations until one day, meeting the conditions to re-establish their own civilization.
This clearly intimidated most civilizations.
The Human Emperor, after all, was a mighty existence that led Trial Civilizations to overcome the Civilization Trial System, so how could he not manage these internal conflicts?
More importantly, the high-levels of the civilization system were highly united.
Lower-level civilizations had to either leave or abide by the rules.