The boundary bridge is indeed a bridge.

The large area where Ning Chong is located at the moment is generally a desert and mound, with a large number of rocky piles and thorn bushes. If you continue to stretch forward, you will find an extremely wide and long Grand Canyon.

On the other side of the canyon, the landscape is more natural. The vast forests and plants of all colors are geographically flatter and impossible to see from any distance.

The canyon separates the upper and middle boundaries, connected by huge stone beams in the middle.

The stone beam is the boundary bridge, which runs through both ends and is very wide. Ning Chong estimated that even if several large trucks were driven side by side, they would not be crowded, more than enough.

Ning Chong looked at the environment on both sides of the boundary bridge, and felt some emotion in his heart.

What is the reason why these caves are the same as the environment of the human world? And they are very vast, and a single green source cave is as big as an urban area, with mountains, rivers and forests.

He was observing and sighing, and suddenly looked ahead, three mutant mantises, with their arthropods moving rapidly, swept onto the Shiliang Boundary Bridge and returned to their own team.

One of them was particularly familiar, it was the one that was broken by Ning Chong.

It seems that the time point that Ning Chong entered this time coincided with the time of his death just now. The three mutant mantises, after killing the intruder, immediately returned to the team.

The area they guard is the boundary bridge, and their departure is purely accidental.

Ning Yuan frowned.

Because there were a few skeleton soldiers, they actually surrounded the three praying mantises and made strange sounds, as if they were asking. And the three praying mantises, also in a strange tone, are responding to something.

Ning Chong felt surprised and confused.

Because of the information that is popular in the world today, the creatures of the Green Source Cave are only skeleton soldiers with a little wisdom. The other mutant zergs have very low intelligence. It is unlikely that there will be a situation where the two sides communicate smoothly.

This has never happened before.

Then there is only one possibility, as Su Qingxuan said, the global cave is already evolving, and the strength and wisdom of the cave creatures are gradually improving.

On the boundary bridge, after a few skeleton soldiers finished asking, they actually turned around and came in the direction of Ning Chong. There were six skeleton soldiers in total, like a human army, patrolling in a neat line.

Ning Chong was surprised again and hurriedly dodged into the distance.

The skeleton soldiers of the realm in the Green Source Cave will never be able to cross the boundary bridge and patrol the upper realm. This is the conclusion reached by countless warriors who have explored the cave for decades.

No matter what kind of cave it is, the upper realm, the middle realm, the lower realm, and the tail realm are all distinct and not subordinate to each other. To put it bluntly, it is to look at each other's places, and the old and dead do not get along.

Ning Chong didn't know if this phenomenon was due to the simulated cave or because of the evolution of the global cave.

In short, this phenomenon directly increases the difficulty of the cave even more.

Because it is entirely possible that powerful creatures in the Middle or Nether realms will step out of their own territory to support other territories. From independence and decentralization, to joint cooperation.

Ning Chong couldn't help but burst into a foul mouth.

If this phenomenon happens in the global caves, then the global warriors will suffer a great calamity. After all, the cave is a place where warriors fight, and the more difficult it is, the more deaths there will be.

The strength of the skeleton soldier is one notch higher than that of the mutant mantis.

And because of intelligence, it's even more difficult to deal with.

If you talk about six mutant mantises, they can be equated with a first-order martial artist.

Then these six skeleton soldiers can surround and kill a first-order martial artist effortlessly.

According to Ning Chong's own estimate, the skeleton soldiers in front of him, one of them came out, and their combat power was equal to Cao Ben. Although Cao Ben has accepted secret cultivation and his strength has increased, after all, he is still the second ring of qi and blood, and his foundation is not high.

Ning Chong was not afraid of these skeleton soldiers, but they were a team at the moment, so it was a little terrifying. If one is alone, Ning Chong is interested in hunting.

He is currently full of blood and blood, and has weapons and boxing skills, and if he singles out one or two skeleton soldiers, if there is no accident, it should be enough to win.

Ning Chong observed, and at the same time retreated, looking for a suitable fighter.

He hadn't fought the skeleton soldiers yet, and he had a strong fighting spirit in his heart.

The stronger the opponent in the cave, the higher Ning Chong's ascension.

Following this group of skeleton soldiers from a distance, Ning Chong carried out the traces of blood, like an old hunter, without revealing any sound, and followed closely.

I don't know if it was providence or Ning Chong's thoughts, which moved the simulated cave.

The skeleton soldiers of the six teams suddenly stopped, chatted a few words, and were actually divided into three groups, each patrolling in a different direction. Two in each group, holding bone spears in their hands, leave each other.

Ning Chong's heart was beating wildly in surprise, and he hurriedly caught up with a group of targets.

It wasn't until I followed for a long time that it was determined that the skeletons were far away and could not be supported.

Ning Chong's gene tree qi and blood ring boiled instantly, and the blood veins were exerted to the extreme. Then the body was like a civet cat, hidden like a shadow, and a skeleton soldier was rapidly verticalized.

The skeleton soldiers of the cave are all about 1.8 meters tall, and their body size is similar to that of adults. Because it is in a skeletal state, it looks a little thin and tall. The bone spears in their hands are the same height as their bodies, with sharp ends and thick rods in the middle.

The "Six Veins Divine Sword Fist" is launched!

"Shaoshang Sword Fist"!

Ning Chong's hands were in fists, and his fingers stood upright like small daggers.

The characteristic of Shaoshang Sword Fist is that it is extremely powerful, erupting vigorously, and unstoppable.

This move is also the most explosive move, second only to the sixth move.

In Ning Chong's eyes, the larynx, chest, and tail vertebrae of the skeleton soldiers were the three major weaknesses. He was stealthy at the moment, and he was attacking from behind, and the target was directly the tail of the skeleton soldier.

Chirp~~~

The skeleton soldier suddenly sensed the crisis, and his mouth erupted into a scream.

But before it could react.

Ning Chong was already close.

Bang~~~

There was a stiff thud.

Ning Chong's fist move smashed the weakness of the skeleton soldier's tail vertebrae.

With a crackling sound, this skeleton soldier lost the ability to fight back in an instant, and the bones behind the vertebrae shattered. Even under his hip bone, he was unsteady and almost hit the street on the spot.

The other skeleton soldier was alarmed and immediately counterattacked.

The bone spear in its hand stabbed Ning Chong viciously, and even brought a strong wind.

Ning Chong quickly drew the alloy short blade and parried.

With a violent bang, Ning Chong's arm shook violently, but he was not harmed. He immediately lunged at the wounded skeleton again, the alloy blade cutting straight into its throat.

The wounded skeleton soldier hurriedly dodged.

But Ning Chong's move was false, and with a twist of his wrist, the alloy short blade was quickly inserted, like lightning, viciously slashing through the skeleton soldier's chest.

But the skeleton soldiers behind Ning Chong also killed with the bone spear he swung.

Ning Chong twisted violently.

Disheveled~~~

The wounded skeleton soldier, even badly wounded, could no longer hold on, and collapsed with a bang.

And Ning Chong's twist only avoided serious injuries, but he couldn't avoid minor injuries. The skeleton soldier's bone spear slashed past Ning Chong's waist, bringing up a puddle of blood.

Ning Chong turned around without hesitation and pounced on the skeleton soldier again.

The skeleton soldier who was left alone was not Ning Chong's opponent. After only a few rounds, Ning Chong found a flaw, and was stabbed in the throat, and his head was immediately cut off.

The bones of two skeleton soldiers fell to the ground.

Ning Chong took a few deep breaths, and the qi and blood in the gene tree shook. The wound on the lower back side immediately began to be forcibly closed. But for a moment, there was no more bloodshed.

Ning Chong breathed a sigh of relief, took out the prepared bandages, and bandaged his waist. This time he was well prepared, and even brought in a few medical potions.

Right before Ning Chong's eyes, the two skeleton soldiers began to shrink.

In just over ten seconds, it has turned into two pools of bone slag.

Ning Chong's eyes lit up, and he lowered his body and picked up the pile of bone slag.

Two pearl-sized, crystal clear, blood-red beads lay quietly in the bones. The sheen flows slightly, giving off an alluring brilliance.

"Cave Blood Crystal Nucleus?"

Ning Chong picked up the two blood-red beads in surprise and carefully identified them.

In the biology class of the ten major subjects, he clearly learned that the blood crystal nucleus of the cave belongs to the product of the cave. It is a crystalline condensed from a certain type of elite-level creature.

This kind of cave blood fu crystal nucleus is an important resource for making special effect blood fu pill beads!

In the early stage of any martial artist, it is essential to practice the breathing method, the aura array, and the blood fu pill bead. Therefore, the value of the Cave Blood Fu Crystal Core is very high, and it is a sought-after item.

Ning Chong was sure that what he had in his hand was the Cave Blood Fu Crystal Nucleus.

He was overjoyed by this discovery.

But what is puzzling is that the Cave Blood Crystal Core can only be dropped by elite creatures, why would two ordinary skeleton soldiers drop such a rare resource?

Another bigger puzzle is that there is no loot to be picked up in the simulated crypt!

Then why, did he get two Cave Blood Crystal Nuclei?

"Could it be that because the world's caves are evolving and changing, the simulated caves are also keeping pace with the times?" Ning Chong pondered darkly.

He had killed and injured a large number of mutant zergs before, but he had never gotten loot.

Is it possible to say, "I can only get crystalline resources?"

Crustaceans and limbs, unobtainable?

The creatures of the cave, the whole body is full of treasures, this is the knowledge that Ning Chong has known for a long time.

The cortices, carapaces, limbs, blood, crystals of cave creatures, and even the eyeballs, hearts, and fangs of advanced creatures are all precious resources.

Ning Chong was puzzled.

In order to prove his inference, Ning Chong decisively closed the simulated cave.

"Analog Number 03698565 Green Source Cave, Close!"

In an instant, the surrounding scene distorted and changed, and everything returned to reality.

Ning Chong sat back in the special training room.

And in the palm of his hand, the two cave blood crystal nuclei still exist!