"The ten emperors of that time decided unanimously, after consultation, that the power of the empire should not be used for internal friction but must be used for external expansion. So, from that point on, no matter the conflicts between the royalties within a country or between royalties of two or more empires, they could only be resolved in the void and not within their world.
The conflicts among the royal families must also be used for external expansion. If there is a conflict between two emperors, they would choose an undiscovered world. After receiving the same information, the two royalties would lead their respective legions and attack at the same time. They are free to use any means to achieve victory as long as it does not undermine the other party.
