Dark Universe Time-Space.
At Saine's instruction, Great Black Heaven had nearly been discovered the first time he stole intelligence.
It had been a Dark Nether Direct Legion responsible for rebuilding a Death Altar.
Not only had two level-11 Death Monarchs held the fort within the legion, there had also been a strand of Origin Will left behind by the Dark Nether Death God.
The scout sent by the Darkness Source Civilization had only just approached the altar's perimeter when a low death-whisper rang out in the depths of his soul.
That scout did not continue forward.
He forcibly severed his connection to a Darkness Avatar, letting the avatar be swallowed by Death Will, while his main body swiftly retreated along the Dark Current Passage prepared in advance.
Even so, after returning to the Darkness Source Civilization, nearly a third of his Rule True Body had still rotted away.
Only when Great Black Heaven personally took action did he manage to suppress the scout's injuries.
The coordinates of the first altar had been obtained.
Over the next two hundred-plus years, the Darkness Source Civilization successively obtained the reconstruction coordinates of two more Death Altars, along with several transfer routes of the Dark Nether Direct Legion.
After all the intelligence had been compiled, Great Black Heaven did not send it out immediately.
He stared at the One-time Key left behind by the Mechanical Civilization and stayed silent for a long time.
Once he sent it, he would truly have left behind evidence that could be used against him.
The Dark Nether Death God would never tolerate another traitor appearing at his side.
Especially not when Sword Demon had already caused such heavy losses to Dark Universe Time-Space.
But in the end, Great Black Heaven still activated the key.
The coordinates of the