To be the best leader, you must also be the strongest leader!

"Alright, quickly mark it, we'll clean the blood-drawing system later." One of the Nascent Soul stage cultivators quickly got to work.

Soon, this enormous blood pool was labeled, and from then on, all the demon blood of this half-step demon lord would be drawn into this blood pool.

The three Nascent Soul stage cultivators were mainly responsible for guarding the blood pool, labeling it, and cleaning the blood-drawing system after the blood draw to prevent the blood from mixing with the demon blood.

At this moment, the Golden Flood Dragon Demon King in that space was having his demon blood extracted at a frenzied rate, and he could clearly feel his own blood being lost.

His heart was filled with anger and hatred, but at this moment he could only vent his anger by cursing.

After confirming that there were no problems with the blood-drawing system, Sun Yi and his team began to activate another crucial system. Sun Yi then asked Ouyang Ming on his right, "Are you ready?"

"Reporting to the sect leader, everything is fully prepared." Ouyang Ming nodded.

"Then I'll begin." Sun Yi activated the Demon-Locking Tower again, and three more pipes, each as thick as a water bucket, extended down from the space where the Golden Flood Dragon Demon King was located.

The three tubes are green, unlike the tubes used for drawing blood. They also have sharp needles in front of them, but the runes engraved on the needles are different from those on the tubes used for drawing blood.

At this moment, the three pipes hung down like three serpents.

"Damn humans, what else do you want?" The Golden Flood Dragon Demon King also noticed the three green pipes falling from the sky, and his demonic eyes burned with rage.

At the same time, its massive body struggled fiercely, but unfortunately it was now imprisoned in the space and had no way to break free from the control of the Demon Locking Tower.

The sharp needles at the ends of the three green pipes pierced into the body of the Golden Dragon Demon King through the gaps in its scales.

Ow...

A painful scream came from the Golden Flood Dragon Demon King's mouth, echoing throughout the space, but it could not be heard out. At this moment, the other demon kings at the half-step demon lord level in the Demon Locking Tower had no idea about the Golden Flood Dragon Demon King's situation.

With three green pipes inserted into his body, the Golden Flood Dragon King noticed that these three pipes were not drawing his blood. Just as he was puzzled, a strange suction force suddenly appeared in his body.

He felt his demonic power being drawn away by this suction force, but unfortunately, the demonic power in his body had been sealed by the human race, so he had no way to control it.

Now he can only watch helplessly as his demonic power is drained from his body.

"You damned humans, one day my race will make you pay a terrible price!" The Golden Flood Dragon Demon King's voice was full of curses, but unfortunately no one responded.

At this moment, Sun Yi and the others are paying attention to the demon power extraction system. The demon power extracted from the Golden Flood Dragon Demon King flows along the green pipes to the thirty-sixth floor of the Demon Locking Tower, and finally merges into a huge cylindrical device. The interior of this cylindrical device is divided into ninety-nine layers of space.

The demonic power extracted from the Golden Flood Dragon Demon King is purified each time it passes through a layer, stripping away the Golden Flood Dragon Demon King's aura and the power of laws within it.

Once this demonic power had completely passed through the ninety-nine layers of space, the aura and laws belonging to the Golden Flood Dragon Demon King were completely stripped away.

Only the purest, attribute-less demonic power remained, which was injected into another massive cylindrical space at the end of the passage.

This enormous cylindrical space is inscribed with countless mysterious spirit-locking patterns. The pure demonic power injected into the cylindrical space is locked within it and cannot escape.

Above this cylindrical space is a massive pressurization device. In addition to the injection port for demonic power, there are ten outlets, each connected to a specially designed pipe.

These ten pipes are connected to ten enormous cultivation spaces in another room next door.

These ten cultivation spaces are specially designed by the Qingyun Sect for the demon race. Although they are also only at the fifth rank and seventh grade, the pressure is increased by thirty times.

By injecting purified demonic energy into this specially designed cultivation space, the cultivation effect of maximizing demonic energy concentration can reach a hundred times the concentration of spiritual energy.

Therefore, these ten cultivation spaces specially built for the demon race are extremely powerful for the demon race. Sun Yi has also put in a lot of effort to cultivate the demon race.

"Is there a problem with the extraction of demonic energy?"

"The extraction of demonic power is proceeding normally."

"How is the demonic energy purifier doing?"

"After passing through the forty-third layer of space, the demonic power was completely purified. After passing through the seventy-fifth layer of space, the power of the laws was completely purified. The demonic power purifier's effect exceeded expectations."

"Very good, how is the demonic energy storage device?"

"Currently, the demon power storage device has sufficient storage space and the pressure display is normal. Based on the total demon power of a demon king at the half-step demon lord level, the demon power storage device can store the total demon power of at least ten demon kings at the half-step demon lord level."

……

This is the first time using the Demon Power Extraction System, so all the specific data needs to be recorded, and any problems need to be adjusted promptly.

After some testing, the demon power extraction system worked normally, since there was already a similar system in the previous Demon Locking Tower.

This time, it's just that the system has been upgraded.

However, both the blood-drawing system and the demon power extraction system needed some time for detailed testing, so Sun Yi and his team observed the operation of the two systems from the central control center.

Before their demonic power was completely extracted, Sun Yi and his group did not directly process the various materials on the Golden Flood Dragon Demon King. After all, it was a demon king at the half-step demon lord level, and only by weakening it to the extreme could they ensure that it was safe enough to process it.

Ten days passed in the blink of an eye. Both systems were operating without any problems, far exceeding expectations. The demon blood of the Golden Dragon Demon King had been extracted to its limit.

Meanwhile, the demonic power within him was almost completely drained, and Sun Yi and the others had been carefully observing and recording various data.

At this time, all eleven fifth-tier demon kings of the four major demon clans had completed the inheritance of weapon crafting and formation techniques, and basically possessed powerful weapon crafting and formation techniques.

"Sect Leader, the Sea Serpent King and the others have completed their inheritance," Changqing reported to Sun Yi.

"Have someone take them to the cultivation space prepared for them."

"it is good."

The fifth-tier demon kings of the four major demon clans were still immersed in the profound feeling of possessing the art of weapon crafting. Although they had not studied weapon crafting much before, this profound art was deeply imprinted in their memory, as if they could craft demon weapons at any time.

After ten days of research, the Sea Serpent King gained a deeper understanding of the weapon-refining techniques he remembered, and his admiration for the Qingyun Sect grew even stronger, as he had never heard of such a technique before.

"Please follow me, everyone." At this moment, a disciple of the Qingyun Sect appeared at the door, and the group of demon kings did not delay and followed him directly.