Sacred Artifacts can only be used by families with exclusive bloodlines. This is one of the reasons why great noble families have survived through the ages. Owning a Sacred Artifact means possessing absolute power.
Meanwhile, through John's narration, Chu Yi learned that the world where the Blood Race resides is a broken great world, featuring Vampires, Werewolves, Witches, Witch Demons, and other Alien Races. He also learned that the foggy area was a passageway to this world.
It's surprising that Lias, as a member of the Blood Race, travels between two worlds and is even selected into the Federation's Starfire Sequence. There's no way the Federation's higher-ups wouldn't know about this.
Chu Yi stroked his chin thoughtfully. This suggests that there is an exchange of interests between the higher-ups of both sides. I also remember that the Moon Princess's Royal City had followers from the human race.