Xiaofengshan.

At this time, it is really quiet, and there is not a single insect in the surrounding woods.

A kilometer away from Xiaofeng Mountain, a blockade has been formed here, and mutated creatures patrol here.

In particular, mutant red fire ants and mutant bumblebees are the most important patrol forces.

Because they are large enough, after discovering the rest of the mutated creatures, they can immediately notify the queen bee or queen ant in a special way, and then Ye Feng can know and send the rest of the mutated creatures to solve it.

At this time, this blockade line is still expanding outward.

But the further out the blockade line is, the more places that need to be defended, according to Ye Feng's estimate, when this blockade line extends to 5 kilometers, it will not be completely blocked.

This is also the reason why as soon as he breaks through, he is in a hurry to explore this forbidden area.

At this time, on a flat ground one kilometer away from Xiaofeng Mountain, mutated king cobras, mutated goshawks, and big yellow dogs and mutant buffaloes that had just arrived gathered here.

At this time, around the neck of the big yellow dog, there was a fruit basket woven from rattan.

Sure enough, there were 10 life fruits in it, half of them were big and half of them were small.

The big life fruit was formed by Ye Feng using 1,000 spiritual energy points and biological energy, and the vitality contained in it could make a seriously injured third-order mutant creature recover quickly.

He was tentatively named the Third Order Life Fruit.

As for the small two, they were condensed by Ye Feng with 300 points of aura value and biological energy, and the vitality contained in them could make a second-order mutated creature recover quickly.

"Hopefully my vision will come true."

At this time, Ye Feng was possessed by the mutant buffalo, and as he ordered, soon a second-order mutant buffalo slowly walked out.

He was reluctant to try such a dangerous thing as testing the forbidden area, so their subordinates were undoubtedly the best test subjects.

And among all the animals, in terms of the strength of defense alone, the mutant buffalo is definitely one of the best, and the only ones that can be stronger than their defense in the same level are the white rhino, hippopotamus and elephant.

But these mutated creatures brought out from the zoo are very precious, and Ye Feng is certainly not willing to use them as cannon fodder.

As the mutant buffalo came out, Ye Feng thought about it for the sake of safety, took out the third-level life fruit, and threw it to the other party.

The second-order mutant buffalo received the signal and swallowed the life fruit in one bite.

As the life fruit went down, the breath of the mutant buffalo became stronger.

Then, under Ye Feng's order, this second-order mutant buffalo began to approach the forbidden area, and the mutated king cobra and mutant goshawk also immediately followed, so that Ye Feng could switch to the possession state at any time and observe the situation inside.

When the second-order mutant buffalo approached the range of Xiaofeng Mountain close to 300 meters, it began to hesitate and refused to step forward.

Obviously, with the second-order mutant buffalo's perception of danger, it has already sensed that there is great danger ahead.

The subordinates of these contract animals are actually very loyal, they are only subjugated by the strong deterrence of their own kind.

Usually it's fine, but when your life is really in danger, how can you still listen to orders.

But at this time, Ye Feng couldn't help it, and the third-order mutant buffalo who was staring at him suddenly let out a mooing cry.

At the same time, the mutant king cobra, the mutant goshawk and the big yellow dog erupted together to deter and lock on the second-order mutant buffalo.

Feeling the deadly threat coming from behind him, the mutant buffalo no longer hesitated, and stomped on the ground and rushed directly into the forbidden area.

Almost instantly, the strange energy in the forbidden area shrouded towards the mutant buffalo.

That kind of strange energy seems to have a rather terrifying corrosive nature.

The surface of the mutant buffalo's skin instantly festered, and its breath began to decline.

But at this time, a wave of vitality rushed out of its body, and it began to quickly repair the festering skin on the surface of its body, and the breath that slid down on the mutant buffalo also stabilized instantly.

Seeing this scene, Ye Feng was overjoyed.

Sure enough, the life force can cancel out that weird energy.

In this way, he can be regarded as truly possessed, the foundation of exploring the forbidden area.

Of course, it's just the basics, Ye Feng doesn't think that the danger in the forbidden area is only this weird energy.

Moreover, the life force in the mutant buffalo's body is limited, and it is impossible to help him recover all the time, so if you really want to explore the forbidden area, all these factors must be taken into account.

Next, Ye Feng let the mutant buffalo stay at the edge of this forbidden area, and the first thing he wanted to test was how long the third-order life fruit could allow the mutant buffalo to stay inside.

It didn't take long for Ye Feng to get the answer he wanted.

Ten minutes!

After only ten minutes, the life force in the mutant buffalo's body was depleted, and its skin was rapidly festering.

At this time, without Ye Feng's order, the mutant buffalo rushed out frantically.

Staying on the edge, it managed to escape, but even then, half of its skin was ulcerated and pus.

Ye Feng was not stingy, and directly threw a second-order life fruit to the other party, allowing him to recover quickly.

"This is equivalent to staying in it for 10 minutes, and you need to consume 1,000 points of aura to resist. Although the consumption is a bit exaggerated, it is still within my tolerance. ”

Ye Feng thought quickly in his heart, but he still didn't act rashly, but carried out the next round of tests.

Next, he's going to run a set of comparative tests.

He directly called another second-order mutant buffalo, and at the same time, there was also a second-order mutant sparrow.

Let them take the second-order life fruit, and then enter the forbidden area together.

By comparing the two, he would be able to know if his own defense was resistant to these strange energies.

Soon the mutant buffalo and the mutant sparrow were driven in.

The second-order life fruit contained a limited amount of life force, so this time the mutant buffalo only lasted 3 minutes before escaping from the forbidden area.

This was within Ye Feng's expectations.

But the weaker mutant sparrow is still staying inside.

And it wasn't until the 9th minute that the life force in the opponent's body was exhausted and escaped.

Seeing this scene, Ye Feng was a little dazed, and he didn't understand what was going on at all.

"The weaker the defense, the longer the resistance?"

This is not reasonable at all, and Ye Feng always feels that something is wrong.

He closed his eyes and began to remember.

After possessing spiritual power, Ye Feng's memory also increased greatly, and what had just happened flashed in his mind like a slideshow.

After a while, Ye Feng opened his eyes, and his eyes were bright.

Then he did another repeat test.

This time, when the second-order mutant buffalo and mutant sparrow entered, Ye Feng switched the possession state to the mutant goshawk.

Mutant buffalo and mutant sparrow, every detail eroded by strange energy was clearly captured in his eyes.

With his vision greatly enhanced, Ye Feng could clearly find that the speed at which the skin on the mutant sparrow's body festered was almost twice as fast as that of the mutant buffalo.

This is the same as his guess, the stronger the defense of the mutated creature, the stronger the resistance in the face of this strange energy.

And the reason why the mutant sparrow can hold on longer than the mutant buffalo is entirely because of its small size and less contact with weird energy.

If the two are the same size, the mutant sparrow will definitely not be able to hold on first.

And such a discovery is naturally useful for Ye Feng.

Originally, according to Ye Feng's plan, he planned to send the mutant buffalo with the strongest defense to explore the forbidden area.

But now he feels that it would be better to change to a big yellow dog.

After all, the big yellow dog is small in size and should be able to support it for a longer time, in addition, its speed is the fastest among all its subordinates, and even if it is really in danger, the probability of being able to escape is greater.

Moreover, the dog's sense of smell, vision, and hearing is better than that of the mutant buffalo, which is naturally more convenient for Ye Feng to go in and search.

After making a plan, Ye Feng quickly took action.

He asked the big yellow dog to eat a third-order life fruit first, and at the same time the dog still had one in its mouth, just in case.

After doing all this, Ye Feng switched his possession state to the body of the big yellow dog, and as soon as his body jumped, he entered the forbidden area.

Soon he felt it, and the forbidden area was filled with strange energy.

As soon as he entered, these strange energies immediately attached, and it was extremely corrosive, like strong sulfuric acid.

Even if the big yellow dog had reached the third order, its defense was not strong, and the skin on its body began to fester.

Ye Feng was the first time he had intuitively come into contact with this kind of energy, "Is this weird energy?" It's so corrosive, so it's good to call you corrosive energy. ”

At this time, as the body is injured, the life force contained in the body will automatically flow to the wound for repair.

Ye Feng didn't move, but stood quietly in place for a moment, and soon he deduced that with the corrosive speed of these energies, the life force in his body could support at least half an hour or more.

If you count the life fruit in his mouth, he can stay in this forbidden area for a full hour.

"That's good, then I don't need to rush, I hope this exploration can harvest some useful information." Ye Feng muttered as he controlled the big yellow dog forward.

But after only 100 meters, he stopped.

"How is the concentration of corrosive energy enhanced? And in such a short distance, it is actually enhanced by about 10%. ”

Ye Feng continued to walk forward and found that as he continued to advance, the concentration of corrosive energy was also surging.

This couldn't help but make him secretly frightened, and it was completely conceivable that if he reached the central area of this forbidden area, then the concentration of this corrosive energy would be so high.

Ye Feng was thinking about these things while moving forward, but at this time, his pace couldn't help but slow down.

He was really afraid that all of a sudden, he would break into a place with extremely high corrosive energy, causing the big yellow dog to die instantly.

After all, such a strange place has appeared, and it is normal for some incomprehensible dangerous situations to appear in it.

Soon Ye Feng arrived at the foot of Xiaofeng Mountain.

Then, with some trepidation, he began to climb the mountain.

But just a short distance ahead, he stopped again.

"Why doesn't the concentration of this corrosive energy increase but decrease?"

Ye Feng walked back with some doubts, and found that it was not that he was wrong, but that was indeed the case.

Then, he quickly went up the mountain.

It soon became clear that the closer you get to the top of the mountain, the lower the concentration of corrosion energy.

After thinking for a while, Ye Feng returned to the foot of the mountain.

This time he didn't climb the mountain, but used his forelimbs to dig frantically.

Although the big yellow dog is not good at strength, as a third-order mutant creature, its strength has reached at least two tons, and every planing of its feet can bring out a large area of soil.

A dog hole formed quickly, and Ye Feng did not stop, this dog hole was still extending inside.

"As I thought, the aura concentration has really increased."

In other words, the source of this corrosive energy is inside Xiaofeng Mountain...... Hey, that's not right! ”

A huge rock appeared in front of him, and after Ye Feng changed the direction of the hole slightly, he immediately discovered that as he dug down, the concentration of spiritual energy increased sharply.

After a little comparison, Ye Feng confirmed that the source of corrosive energy was underground.

He immediately changed the direction of the excavation and went underground.

In the blink of an eye, 10 minutes passed, and Ye Feng had dug 100 meters underground.

The corrosive energy here is 10 times more intense than in the outer areas.

The big yellow dog had already taken the second life fruit, and most of it had been consumed.

"No, I can hold on for another 3 minutes at most, but I don't know how far I am from the source." In the end, Ye Feng sighed lightly and began to control the big yellow dog to return.

However, this trip was not without gains, at least he had a deeper understanding of these corrosive energies.

And then it's how to deal with it.

But now this situation, it is clear that it is impossible to solve it by his own ability alone.

So he already planned to inform the military of the news here in the restricted area.

……

By this time it was completely dark.

Although it was only one day, in the entire Yangcheng City, with all the construction forces used, there were already 30 kilometers of defensive walls and the foundation construction was completed.

Laying the foundation is the most difficult, as long as this step is completed, the subsequent construction is just to fill in the concrete and boulders according to the drawings.

At this time, Zhang Ji was leading a group of subordinates from the Sixth Regiment to escort a full 200 mud trucks back.

"Secretary Cao, this is the last batch of boulders to be shipped today, and it is enough for you to rush to work tonight." Zhang Ji came to Cao Guangzhi and spoke.

Cao Guangzhi, the secretary general, is one of the people in charge of the construction of the defensive wall, mainly to coordinate various departments and follow up on the purchase of various materials.

"It's hard work, but the boulder raw materials are still a little insufficient."

"The amount mined back needs to be increased by at least 20% on this basis to fill this gap, can you dig more tomorrow?" Cao Guangzhi asked quickly while registering.

(End of chapter)