Mande City Underground Gu Insect Base.
Within the profound darkness of the underground depths, Su Jie walked alone along a corridor, whose glass walls on both sides were etched with Array Formation Talismans, flickering with a dim green glow.
Behind the walls lay the terrifying Insect Nest, where variously shaped Gu insects occupied the view, some squirming, others fighting, or mating, creating a ghastly scene of slaughter.
As channels opened in the ceiling, hundreds of tons of Poison Insects and snakes passed through the Array, tumbling down into heaps within the Insect Nest.
In an instant, the Gu insects' frenzy and killings escalated, with the floor covered in leftover insect carcasses and bodies, and the air was thick with the pungent smell of blood, nauseating to behold.
Su Jie was indifferent to this, as the Thousand-Handed Centipede was not here at the moment but was secretly digging canals on the Kra Isthmus. Su Jie had come here for another important matter.
He arrived at a newly constructed underground space, the size of three standard soccer fields combined, which was a training ground newly planned by Su Jie.
Aside from Su Jie, there were also dozens of prisoners detained here.
They were all war prisoners from Japan, specifically selected by name and transferred here by Su Jie's orders.
Hearing the movement, the restless war prisoners looked over with hostile glares, and then they saw the figure of Su Jie.
Su Jie made no attempt to hide, so all the prisoners recognized him as the sole person in control of the Jieke Group.
In a flash, a variety of sounds filled the air, curses, pleas for mercy, weeping...
In front of Su Jie, the prisoners displayed a myriad of postures.
"32 test subjects, that should be enough."
As Su Jie stroked his chin, he paid no attention to the turmoil around him; the clamor of those facing death did not concern him.
No sooner had he spoken than a flash of light emanated from the Storage Bag at his waist, and large containment vessels appeared before him, piling up like a small mountain.
Within these containers was nothing but brilliant red blood, the first batch of blood to be transported here since the inauguration of the blood donation policy, an amount calculated in tons.
Human blood and water weigh roughly the same, and estimating 400 milliliters of blood drawn per person, the combined donations from 2500 people would be about one ton.
The blood Su Jie had on hand weighed over two thousand tons, which meant it was the blood of five million donations.
This vast quantity of blood, if placed in the Tianyuan World's Blood Demon Cave, would make those Demon Cultivators cultivating the Blood Sea Devouring Sky Demon Technique green with envy.
To obtain this much blood, aside from extracting it slowly over time from the Blood Slaves within their territory, they would have to engage in mass killing in the outside world, slaughtering five hundred thousand people to obtain an amount of blood equivalent to what Su Jie had here.
Compared to the Blood Demon Cave, Su Jie's resources were far richer. The blood extracted from the Blood Slaves in the Blood Demon Cave had to supply the needs of the entire sect, while Su Jie only needed to satisfy himself.
The imprisoned Japanese war prisoners watched this miraculous scene of suddenly appearing blood and the pungent odor that changed their complexion, revealing to them Su Jie's secret.
However, they were doomed to have no risk of leaking any secrets, because Su Jie had already extended his left palm.
A Japanese war prisoner uncontrollably flew towards Su Jie, who then pressed his left hand on the top of the prisoner's skull.
"Blood sea surges, blood spring flows, refine completely."
A cold curve appeared on Su Jie's lips as he operated the Blood Sea Devouring Sky Demon Technique.
The eyes of the Japanese war prisoner bulged, turning blood red with severe congestion. Then, with a pop, his eye sockets ruptured, with twin jets of blood spurting out.
Not just the eyes, but blood also surged out of all seven orifices of the Japanese war prisoner's body. His body resembled a dried, broken sack, as all the blood was extracted, leaving behind a mummified husk.
This horrific scene made all other present Japanese war prisoners tremble, completely shattering their composure.
"A devil, this is a devil."
"Amaterasu above, save your people!"
"I don't want to die, I want to go home, let me go home!"
Screams of terror echoed throughout the area, but Su Jie was completely indifferent, moving his left hand away as the corpse of the Japanese war prisoner he held collapsed.
Su Jie observed the blood that had been drawn into the air and formed a spell: "Absorb!"
The blood immediately boiled, like water coming to a boil, and misty, blood-colored vapor rose into the air. Su Jie stood in the midst of it, as this bloody vapor turned into essence strands, which he refined with the Blood Sea Devouring Sky Demon Technique.
Although Su Jie had only recently started practicing this Demon Technique, his Fourth Level cultivation in the Secret Realm allowed him to progress swiftly, and the blood was quickly refined by him.
Feeling the slightly increased amount of Holy Blood inside him, he noted that the effect of the ordinary people's blood was far inferior to his own.
"Let's see about this batch over here."
Su Jie lifted his hand, and a clump of blood floated out of one of the containers, not too much or too little, precisely the blood volume of the Japanese war prisoner from before.
Repeating the cultivation steps, Su Jie refined the blood again using the Blood Sea Devouring Sky Demon Technique.
"There's some loss, but it's within an acceptable range; however, it's much less effective than the blood of people from the Tianyuan World, perhaps due to the lack of Spiritual Energy," he mused.
The blood from these public donations had been preserved through a strict procedure, meticulously handled at every stage, and transported to Su Jie as fast as possible using cold chain logistics, consistently kept within the specified temperature range to maintain the biological activity of the blood, ensuring it didn't spoil.