The Void Empire sent its captives inside, where some horrific process turned them into absolutely loyal warriors.
These beings, who had once possessed independent thoughts and emotions, were now nothing more than extensions of the Void Emperor's will.
The two continued observing and soon discovered the fortress's operating patterns.
Every few hours, transport ships arrived and departed, carrying an endless stream of "raw materials" and "products."
Judging by the scale, the Void Empire had already converted tens of thousands of people, and the pace was still accelerating.
"At this rate, it won't be long before they can assemble a million-strong Void Legion," Seraphina said as she calculated the figures.
"And these warriors are far stronger than ordinary Void Soldiers."
Lin Ye activated the listening device, hoping to gather more intelligence.
Soon, they intercepted a conversation between Void officers.
"How is the conversion progressing?" a deep voice asked.
"Very smoothly, my lord," another voice answered respectfully.
"We've completed the third round of improvements. The new warriors' capabilities have exceeded expectations."
"They not only retain their races' original special abilities, but also integrate perfectly with void energy."
"For example, the warriors who were originally elves can now use both nature magic and the power of the void."
"Good. What about those Guardians?"
"The Capricorn Guardian's conversion is nearly complete. His constellation power has provided us with valuable data."
"The leader of Libra has been resisting fiercely, but she's beginning to yield under coercive measures."
"We expect her conversion to be complete in another twelve hours."
"What about that Pisces brat?"
"He's still unconscious, but His Majesty the Void Emperor said he would handle him personally."
"He seems very interested in the boy's abilities."
Hearing this conversation, Lin Ye's heart sank.
Astria and Titan were in far greater danger than he had imagined.