Shen Hao's mention of "harvest" wasn't simply referring to the newfound civilizational foundations.
It also meant these people.
The battlefield is the best place to foster cohesion. Since these individuals volunteered and stepped onto the battlefield, it naturally became an opportunity to accelerate integration.
Just like the Star Moon Civilization.
As frontline warriors continue to fight side by side, relations among civilizations grow increasingly close. Currently, apart from not having the officially recognized status of an affiliated civilization under the Civilization Trial System, the Star Moon Civilization is already almost indistinguishable from a true affiliated civilization.
Add to that the ongoing alignment of the Cangling Civilization and the Elfie Civilization, and the actual power controlled by Human Civilization has grown significantly stronger.
The speed at which points are being accumulated has also become astonishing.