What bothered Li Yao the most was not the formidability of the soldier of the Nether World Watch, but the strengthening collar on his neck.
Li Yao saw dozens of collars of the same style on the display shelves in the research room on the other side of a transparent wall, with dozens of strengthening drugs in different colors next to them.
The strengthening drugs could be combined with the collars freely. Other than the crimson drugs, there were also light gray drugs, deep purple drugs, deep blue drugs, and so on. Every drug was emitting weird colors and intense spiritual energy.
It meant that such strengthening collars could not only trigger the techniques of fire but also dozens of other techniques such as frost, poison, corrosion, and so on.
If all the soldiers of the Nether World Watch are wearing strengthening collars of different natures, together with the 'biochemical guns', they will definitely be able to crush any main force legion of the Federation!
Neltharion passed by the dozens of research rooms and weapon test fields. The more Li Yao observed, the more shocked he became.
Elder Nether Spring's capability was far beyond his imagination. The rise of the third life form was indeed not a dream but a terrifying future that was very likely to happen!
In the pathway up ahead were a few exhausted soldiers of the Nether World Watch who had just finished their tests.
They were walking to the lift at the end of the pathway.
Li Yao thought of something and followed the soldiers of the Nether World Watch into the lift.
On the control panel of the lift was an examination rune array. One of the soldiers stuck his right hand to the rune array. A scarlet mystic ray swept across and turned green. The lift was not activated until it was activated.
Judging from the glittering crystals carved on the lift, the 'Nether World' was extremely large. The building alone had dozens of floors.
They had been on the third floor just now, but they were now on the twelfth floor.
The twelfth floor was an enormous training camp. Hundreds of soldiers of the Nether World Watch were doing high-intensity training in the place. Even the soldiers of the Nether World Watch who only had a couple of demon cores attached to them were training with weights of hundreds of kilograms tied to their wrists and ankles and under five times the normal gravity.
Even so, the strength of their punches was often thousands of kilograms.
Dazzling brilliance was surging out of their demon cores. Some of them could even break through the speed of sound with a strength of almost ten thousand kilograms and pierce through an iron plate as thick as a palm!
This kind of power made Li Yao secretly click his tongue.
Perhaps the Xing Yao Federation's newly formed Crystal Suit Battle Team would be able to compete with them. The Nether World Watch would certainly be equipped with biochemical beasts, too!
Several soldiers of the Nether World Watch entered a dark room next to the training camp.
The temperature in the dark chamber was extremely low, and it was dead silent. It was like an enormous graveyard. In the middle of the vague icy mist, almost a thousand deep sleep cabins of different sizes were standing.
"This is … the military deep sleep capsule of the Xing Yao Federation, but it has undergone the same biochemical modification. A lot of unknown blood vessels, biochemical brains, and excrescences have been added to it!"
The four soldiers of the Nether World Watch found their own deep sleep capsules and lay down. On the light beam on the surface of the sleeping cabin, the numbers and runes were changing rapidly. Looking through the observation hole, the cabin was soon filled with deep blue gas. Frost soon appeared on the eyelashes and the tips of the noses of the four soldiers of the Nether World Watch, and they immediately entered the hibernation state, which was extremely low in temperature.
"Got it. After the modification, these deep sleep pods have the effect of 'hibernation'."
"But why?"
Li Yao tapped his head, deep in thought. "Right. The demon core is a highly unstable amalgamation of spiritual energy after all. It may leak or explode at any moment of carelessness. It has to be checked every once in a while. Then, it will enter the hibernation state to stabilize the spiritual energy inside the demon core!
"There are 505 deep sleep capsules here, but this should not be the only camp of the Nether World Watch. There seem to be two to three similar camps nearby, and there should be more on the floors above and below.
"By preliminary estimation, the total number of soldiers of the Nether World Watch should be around five thousand. It fits the scale of a secret army, too. If there are more soldiers, the supply of resources on the Gloomy Wind Island in the North Pole will be too large, which will increase the possibility of exposure. "
Li Yao felt that his teeth were aching.
The individual capability of the soldiers of the Nether World Watch was much higher than that of the Grand Illusionary Soldiers. They also boasted all kinds of terrifying biochemical magical equipment. Besides, the soldiers of the Nether World Watch were intelligent creatures with self-awareness. It was impossible that they would all surrender after one of their command centers was destroyed.
However good he was, it was already his limit to fight dozens or even a hundred soldiers on his own. It was impossible for him to take down all five thousand soldiers of the Nether World Watch.
Besides, 'Mad Medic' Lu Wuxin, an expert in the demon emperor level, and Despot and Swirl, two commanders close to the demon emperor level.
Besides, chances were that Elder Nether Spring had left some secret weapons here.
"This battle is much more complicated than the battle against Xiao Xuance years ago!
"However …"
Li Yao rolled his eyes and maneuvered Neltharion to circle above the resting area of the Nether World Watch. He traced the tubes on the deep sleep capsules and found the end of all the tubes.
Dozens of tubes for different purposes were connected to every deep sleep capsule. Some of them were responsible for inputting spiritual energy into the capsule, and some of them were responsible for supplying high-energy nutrients so that the users of the deep sleep capsules would be able to train themselves and recover their bodily functions instantly in their sleep.
More importantly, there was a crystal wire that connected the deep sleep capsules to the mainframe crystal processor.
As Li Yao expected, the tubes that extended out of every deep sleep capsule were connected to each other in the end and led to the deeper parts of the underground.
"Elder Nether Spring's secret base uses a lot of magical equipment from the Xing Yao Federation. Therefore, other than the biochemical brain, he must have a mainframe crystal processor of a very high level with a very high computational ability!
"All the deep sleep capsules are controlled by the mainframe crystal processor as a whole!
"Assuming that the base adopts the 'dual-core control' approach and is controlled by a biochemical brain and a crystal processor at the same time, they can't be far away from each other. It is very likely that they are installed next to each other.
"As long as I find the two 'brains', I will be able to control the entire 'Nether World' and dig out all of Elder Nether Spring's treasures!"
It was a pity that the crystal wires and the tubes were tightly connected. Even the tiniest gap had been blocked by the biochemical nerves. Neltharion could not crawl in at all.
Li Yao secretly memorized the distribution of the crystal wires in the deep sleep zone. He continued waiting outside of the lift on Neltharion and went up and down with a few soldiers of the Nether World Watch when they entered the lift.
Just like that, Li Yao spent quite a few hours visiting most of the areas in the building.
The building was in the shape of a pyramid. The lower he went, the larger the building became. What was exposed above the ground was only the tip of the iceberg.
The top few floors were the barracks of the Nether World Watch. Below them was a large area of experiments and weapon testing. The interrogation chamber where the Fire Ant was locked was established there, too.
Then, there were the barracks and deep sleep zones of the Nether World Watch. Below them was the warehouse of the biochemical beasts.
The lightning boa that Li Yao was hiding in was stored in this place.
Below the warehouse of the biochemical beasts was an enormous, highly-confidential test area.
The place was like a lifeless prison. On the two sides of the cold, gloomy pathway were independent cells that were sealed by solid crystal glass. The crystal glass was often reinforced by intersecting steel beams, on which dense rune arrays of lightning had been carved, as if they were afraid that the prisoners inside would escape.
In the few cells that were connected to each other, people with gray skin, black eyes, and seemingly melted pupils were either sitting or lying.
Some of them were standard human beings, and some were demons with distinctive features.
Both human beings and demons were lifeless. They did not move for a long time. Even their chests were not moving. Li Yao began to wonder if they were already dead.
A few demons in white robes were standing outside, pointing and recording something.
Chi!
Right then, the gate of the lift was opened again. 'Mad Medic' Lu Wuxin strode in, with a carefree expression on his face.
Li Yao was slightly dazed. Calculating the time, Lu Wuxin should have finished the first interrogation on the Fire Ant.
Hopefully, the Fire Ant's nerves were strong enough to make it through!
"Show me the combat status of the No. 66778 test subject."
Lu Wuxin cut to the chase and spoke straightforwardly to a demon in a white robe.
The No. 66778 test subject was a human being with bushy eyebrows and big eyes.
Next to his left eye, there was a tattoo of a saber around his eye socket. Li Yao knew that it was a popular tattoo in the army of the Xing Yao Federation, which meant that the human being was an expert in sabers.
However, the man's face was gray, with livor mortis all over. He had not breathed for more than half an hour.
More importantly, there was a giant hole on the left side of his chest, through which one could see his back. He could not have been deader.
Li Yao clenched his fists harder and harder.
Even if he was dead, he did not want a member of the Union Army to be humiliated by the enemy like that!
An iron cage was slowly lowered from the top of the cell. As soon as the restrictive spell around the iron cage was removed, the barbed wire was torn into pieces with a bang. A canine demon beast with a scorpion tail dashed out of the cage.
"Scorpion Wolf!"
Li Yao recognized it immediately. The Scorpion Wolf was not a high-level demon beast, but it was extremely fast. Its tail was highly venomous, and it was highly vigilant. Therefore, it was rather tricky to deal with.
The Scorpion Wolf was a scavenger. Seeing a dead body crouching in the corner, its eyes immediately beamed with interest. It barked and lunged at the body of the soldier of the Union Army.
But out of his expectation, the moment the scorpion wolf leaped, the pure black eyes of the soldiers of the federation suddenly seemed to have been injected with crimson venom. Their bodies suddenly bounced up in a rigid posture!
"Hiss!"
The soldier of the Union Army opened his mouth to his ears, and his jaw dropped to his chest. A cluster of venomous mist spurted out of his throat and condensed into a crimson pillar of light, which pierced through the Scorpion Wolf from head to tail.
The Scorpion Wolf, best known for its agility, did not even have the time to dodge and was killed on the spot!
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