Cao Cao was in the secret room, inspecting more than 20 experimental subjects, and the expression on his face was a little uncertain, and it looked so light and dark under the light of the fire.

"It's hard to do now, to create such a kind of blood clan soldier, should it be activated?" Cao Cao muttered to himself.

He was caught in a dilemma because it didn't match his expectations.

He expected that the Blood Clan soldiers could be controlled and obey orders, but now they exceeded expectations, and the Blood Clan soldiers were not under his control at all, and they were extremely aggressive and bloodthirsty.

The manufacturing process of the blood clan soldier is not too difficult, injecting the demon beast essence blood into the body of an ordinary refining realm soldier, if the essence blood can be fused, it will enhance the strength of this soldier.

But this demon beast essence blood is not an ordinary demon beast essence blood, not only does Cao Cao need to send masters to major dangerous places or demon beast forests to catch the demon beast alive for him to study, but also after deployment, it can be injected into the soldier's body.

Cao Cao's creation was similar to serum, but he didn't have high-tech equipment, and it was all the most primitive blending methods.

"Forget it, let's talk about it depending on the situation!" Cao Cao sighed, put down the record sheet in his hand, and walked out of the secret room.

Cao Cao found that he had created an alternative demon beast, which meant that the current Blood Clan soldiers were all fierce demon beasts, so he couldn't help but feel a little frustrated.

Cao Cao opened another door of the secret room, and there was a fishy smell in his face, and when he looked up, it was like a large trapped beast field, with a full twenty rows of iron cages, and there were about ten in each row.

Each iron cage is locked up with a demon beast, a leopard, a tiger, a wild boar, a lion...... There is everything, and it can be said that everything that can be caught has been caught.

Moreover, there is no one to guard this place, only every once in a while, a master will come over to check the situation of these demon beasts, and by the way, they will seal their acupuncture veins with their vitality.

The power of demon beasts is different from that of martial artists, demon beasts are cultivated demon power, and it is estimated that no one in the whole world knows how demon beasts cultivate.

No one has ever heard of demon beasts cultivating into adults, almost all of them have existed since they were born, and they are in different dangerous places, as for their existence for hundreds of years, this is really hard to say.

The biggest reason for not being able to successfully train blood clan soldiers is the madness factor in the demon beast's body, and how to separate the madness factor from the demon beast's body, this is something Cao Cao doesn't know yet.

It may take thousands, if not tens of thousands, of experiments to know how to solve it.

Of course, if you are lucky, you may be able to succeed in the experiment a dozen times, but this is all a matter of luck, how can it be so simple.

Cao Cao walked in, walked straight to the last iron cage, and looked coldly at the demon lion in front of him.

"Try again!" Cao Cao slowly stretched out his palm, pulled out a small saber, and slashed twice in the palm of his hand, blood overflowed, soaking the entire palm, and gently closed his eyes.

"The blood in the palm of the hand is guided, and the blood is melted to forge a new body."

The blood that overflowed from Cao Cao's palm suddenly changed, and a few drops of blood slowly swelled, and something unknown came out of the blood.

These few drops of blood seemed to be able to differentiate into more blood, and they converged into a small stream, wrapping around the demon lion.

If you look closely, you will find that there are small insects hidden in these blood, and the blood has become a blood cocoon, which is impenetrable and envelops the demon lion.

"Roar, roar, roar, ......" The demon lion suddenly seemed to have suffered a severed limb punishment, and the roar of pain continued to come out of the blood cocoon, and the surrounding demon beasts trembled, looked at Cao Cao in fear, and then curled up and squatted in the corner.

One by one, the blood worms burrowed into the body of the demon lion, which was a hundred times more uncomfortable than the body of ten thousand ants, and the blood worms continued to bite the body of the demon lion, and then digested into blood.

"Roar!" The demon lion's wail became quieter and quieter, and the blood cocoon became larger and louder, more and more red and bright, and it also exuded a faint fragrance.

An hour later, there was only a large mass of extremely rich blood cocoons left in the iron cage, and the demon lion had been eaten to the ground.

"Blood flows back, blood melts blood."

Cao Cao muttered, and his palms seemed to glow red.

The blood cocoon was pulled and slowly floated towards Cao Cao's palm, where it was devoured by Cao Cao.

Cao Cao's face suddenly collapsed, and blood marks appeared on his face, as if he had been soaked in magma, and he was instantly disfigured, and his appearance became quite hideous.

The muscles and veins on his arm were also red and swollen, as if they couldn't bear the influx of blood cocoons.

After about ten minutes, Cao Cao's entire palm had turned into a demon's hand, and it looked like magma was flowing.

"Ahh Cao Cao opened his eyes suddenly, and the momentum on his body became more and more violent, constantly climbing.

Cao Cao had a pained expression on his face, but he was still gritting his teeth and holding back.

Just as the blood stains continued to swell, and the muscles and veins on his arms continued to swell, Cao Cao slapped his chest.

"Poof!" A mouthful of black blood spurted out, and the changes on Cao Cao's body kept fading.

It's like a person who has been poisoned and suddenly gets better at an incredible rate.

Cao Cao had returned to the appearance of a normal person, but his face was still a little vain and pale.

"Ahem, cough, cough......" Cao Cao coughed dryly, vomited a few mouthfuls of black blood, and then turned around and walked towards the exit of the secret room, muttering to himself, "It's still too reluctant to devour the blood of a demon beast at one time, alas! ”

Being able to devour essence and blood to strengthen oneself is Cao Cao's biggest secret, and this is also his secret, even his father Cao Song doesn't know.

But this secret has a great drawback, after devouring the essence blood, he can't suppress the backlash at one time, just like just now, he has already devoured it, but due to the backlash of the demon lion essence blood, he has to force out a part of the essence blood.

Otherwise, essence blood will no longer be a great tonic, but a poison hidden in the body, to solve this problem, Cao Cao also thought a lot, but no matter how hard he tried to solve the problem, it ended in failure.

Cao Cao had heard that there was an evil blade on the "Strange Things", which could suppress the power of blood, and even devour blood, but the specific name of this evil blade was not recorded in the "Strange Things".

According to legend, this evil blade has disappeared in this world for a long time, and no one knows where it is in the world, but Cao Cao also has a mind about it, although he did not deliberately look for it, but he will not miss the strange things about this aspect.

Cao Cao firmly believed that as long as he got the evil blade, coupled with his blood-devouring divine skill, he would be invincible in the world just around the corner.