After this proposal appeared, many people were tempted and voiced their support.
Although Earth has suffered invasions from many alien civilizations, there haven't been many that had real communication.
First, the Eternal Civilization was forced to sign an unequal treaty, so it doesn't count as an ally.
The Chuanke Civilization – the Seventh Princess Eve died on Earth, and the Eldest Prince Li Tang and the Third Prince Adam both suffered considerable losses, making their relationship with Earth rather ambiguous and hard to define.
The legendary Zhang Heng Civilization goes without saying. After the battle at the Space Academy, this civilization completely vanished without a trace. Some speculate that perhaps it lost its courage and has fled the Milky Way Galaxy.
So, only Cangming Star remains.
