Back at Great Qin, with so many Dynasty factions making so much noise, it was impossible for Zhao Fu to not know what was going on. Zhao Fu could understand why they had allied together, as the reason was quite simple.
Great Qin was too powerful, and because they could not defeat Great Qin by themselves, they would naturally find people to help. No one would attack when they knew that they could not win; that was just seeking death.
This sort of thing had often happened in the real world as well in terms of armed conflict.
The main reason that they had allied together was because Great Qin was simply too great. None of them were as dangerous as Great Qin, or else they would not be attacking Great Qin.
This posed a problem: Being too strong was equal to being a threat. They were not as strong as Great Qin, or they would not be allied against like this. Similarly, the Devil Horn Empire had been suppressed by other worlds because it was too much of a threat.