Chapitre 329: Ancient Direbeast, Nine-Winged Skydragon

The cosmic civilizations were divided into the following, from low to high: 

Planetary civilization. 

Stellar civilization. 

Galactic civilization

Supergalactic civilization. 

Grand Unified civilization... 

And even higher levels of civilization. 

The question was, what was a Grand Unified civilization? 

The Grand Unified Civilization stemmed from the physics' Grand Unified Theory. The Grand Unified Theory is also known as the law of all things. 

Since there were only four interaction forces between microscopic particles—gravitation, electromagnetic, strong interaction forces, and weak interaction forces—all phenomena in the universe could be explained by these four forces. 

Meanwhile, the Grand Unified Theory was the connection and unity between these four forces. It explained their interaction and how they were linked to each other.