This is not the so-called earth. There are no countries like China, France, the United States, Britain, etc. This is a brand new world, a brand new universe!
The most common and common thing in this world is high technology, ranging from light-sonic spaceships to motorcycle-style personal electric speed cars. Nowadays, the most convenient thing is transportation.
The alliance of major planets has built a defense layer around each galaxy to resist interstellar invasion, mainly to defend against the greatest public enemy in the universe - the Zeus Empire!