The Green Source Cave, the most outland creatures in the upper realm, is a mutant zerg.

Among them, the mutated iron-horned longhorn bull is the most common creature, with weak combat power and low intelligence. But mutant worms are different, they are good at splash attacks, and they can corrode the qi and blood of warriors, which is quite difficult.

Even more powerful than the mutant worm is the mutant hornet. Not only are they fast in attack, but they can also fly, and the warrior cannot deal with them at all without the right weapons.

So when a group of mixed mutant worms and mutant hornets came with a fierce momentum, Ning Chong's heart was alarmed, and he hurriedly got into the pile of rocks to dodge.

The concealment effect of Bloodline Trail is activated.

Ning Chong lurked cautiously, not daring to make extra moves.

From ancient times to the present, since the appearance of the cave, no one has dared to fight the cave alone! Those who can enter the cave to fight must be a team of warriors, supporting each other and fighting as a team.

Like Ning Chong, it is completely impossible to enter the cave alone!

It is only in the simulation system that Ning Chong can realize this impossibility!

Although it is a spirit body entering, it will not really die. But all the damage suffered is still borne by the body. If it was a fatal injury, Ning Chong's body outside would definitely be difficult to bear.

In this case, if you rush out, you are looking for death!

However, Ning Chong is in this area, often coming and going, and is already quite familiar with the terrain. At this moment, there is a bloodline to protect himself, and it is relatively easy to hide himself from being detected.

He even had the strength to carefully observe the group of mutant zergs.

Basically, every mutant zerg has an adult body size. Dozens of mutant zergs gathered, that is, a pile of black pressure, equivalent to the size of a small army.

And that's just the creatures of the Upper Realm, if you cross the Boundary Bridge and enter the Middle Realm, you'll face skeletons. In the Green Source Cave, the skeleton soldiers already have intelligence, can listen to the command of the action, form a group, and attack and defend in an orderly manner.

And in the Nether, there will be bone beasts, which are even more terrifying than skeleton soldiers.

As for the final Tail Realm, there are more powerful creatures lurking.

The corresponding levels of the Green Source Cave are Tier 1 and Tier 2.

But when a first-order martial artist comes in, he is just cannon fodder. The one who serves as the main attack force must be a second-order martial artist. Moreover, it must be a team battle, and no matter how strong the individual combat power is, it cannot change the situation on the battlefield.

What's more, the rules of the space are limited, and the level is also limited.

No team, no entry into the cave! This is the bloody iron law!

Ning Chong was reviewing the knowledge of the cave while observing the enemy's situation.

Perhaps having lost the trace of the intruders, the mutant zerg that came with great momentum began to wander and patrol aimlessly again. Even a few of them began to flutter and fight with each other.

Due to low intelligence, these mutant Zerg are of different types, and there will also be fights between various groups. But there will be no life and death, it will only be a provocative struggle.

Ning Chong began to look for a target again.

Now he is a hunter who is good at lurking.

And these mutant zergs are his prey.

Finding the right point of attack, Ning Chong quickly left.

The targets are two mutant worms, as well as a mutant bumblebee.

It's still the stones that lead the way.

The mutant hornet was hit and flew in a rage.

Ning Chong quietly let out his breath while throwing stones.

The mutant hornet is in hot pursuit.

Ning Chong abruptly let go of all his breath, and the mutant bumblebee was furious, its wings buzzing like a motor, and its tail was spitting out a stinger, like a black short sword.

Ning Chong's figure writhed sharply like a snake, quickly approaching the mutant bumblebee. Suddenly, the body pounced and used the grappling in the fighting technique to lock the mutant hornet.

The elite-level fighting skills that have been tempered thousands of times are used on a single mutant zerg to completely unleash their power. The mutant hornet couldn't move for an instant, but the stinger on its tail vibrated sharply and began to fight back like a sword.

Bite~~~

The alloy short blade in Ning Chong's hand fought with the wasp tail thorn, and a metallic sound erupted. I can't imagine that the limbs of foreign creatures are so strange.

At this point, it's hand-to-hand combat.

Mutant Hornets are good at rapid raids, and their strength is cluster attacks. Alone, it is locked by fighting techniques, and can only swing its tail spike instinctively.

This kind of counterattack is completely unthreatening to Ning Chong.

With fists and kicks, Ning Chong struggled with the mutant bumblebee, constantly looking for weaknesses under the wasp's abdomen. But it is covered with a carapace, and the mutant hornet moves very quickly, and it can't kill with a single hit in a hurry.

After more than a dozen rounds in a row, Ning Chong finally stabbed the alloy short blade into the weak spot under the wasp's abdomen and stabbed it fiercely. In an instant, green mixed yellow blood spurted out, and the mutant bumblebee convulsed for a while, and finally died.

The gene tree qi and blood ring in Ning Chong's body greedily absorbed the spilled energy.

Compared with the mutated iron-horned beetle and the mutant worm, the ontological energy of the mutant bumblebee is more intense. Ning Chong killed this one and benefited a lot.

Looking at the wasp tail stinger with some regret, Ning Chong shook his head.

If it's in a real cave, this tail thorn can be sold for a good price.

It's a pity that this is a simulated cave created by the system, and loot cannot be obtained.

But Ning Chong, who has been tempered by countless battles, if he enters the real cave again, then he will also burst out with amazing combat power. Future harvests can already be expected.

Ning Chong wiped the blood off his body and was about to continue the pursuit.

Suddenly, the two mutant worms, already smelling the blood of the mutant hornet, had already rushed over in a rage. It writhes like a snake, and its large mouth is full of fangs.

Ning Chong hurriedly dodged, and the bloodline trail was launched, and he rushed behind the mutant worm.

The Mutant Ironhorn is a melee attack, the Mutant Hornet is a flying attack, and the Mutant Worm is a ranged attack. The slime they spray has strong corrosive damage, and even corrodes the qi and blood of warriors.

Of course, Ning Chong didn't dare to confront it head-on.

He dodged behind the mutant worm, his mouth open.

"Blood Mouth Sword"!

A silk thread of blood mist condensed shot rapidly onto the eye socket of a mutant worm.

The mutant worm suddenly twitched and struggled frantically.

The other mutant worm writhes its body in panic, splattering bullet-like mucus from its large mouth, and suddenly strafing aimlessly.

It's actually not that difficult to deal with mutant worms. As long as you don't get sprayed by them, use weapons or terrain to sneak attack, and kill one accurately. Because although they are ranged attacks, they have the weakest defense.

With a bloodline trail and a qi and blood mouth sword, Ning Chong is fully capable of restraining mutant worms. When the mutant worm fails to hit the target, then it will die quickly.

Within a few rounds, Ning Chong was already standing on top of the two corpses.

Feeling the increase in the qi and blood ring, Ning Chong did not hesitate and continued to look for the target. It stands to reason that there will be no mutant worms in this area, and there will be no mutant hornets.

But Ning Chong's big killing actually attracted all the creatures of the boundary bridge.

But the benefits are clear.

Ning Chong was no longer satisfied with hunting the mutated Ironhorn Celestial Bull, and began to use the concealment method to constantly look for the mutated bumblebee as a hunting target.

Time passed slowly.

Ning Chong's combat experience became more and more abundant, and his sneak attack methods became more and more skillful.

This large area has completely become his private battlefield.

When the last two mutant worms fell under his alloy short blade, Ning Chong gasped in satisfaction and sat down on the ground.

The gene tree qi and blood ring in his body, the fourth ring was already boiling.

It still needs one last trace to completely break through!

But the large number of battles had exhausted Ning Chong.

In this battle, he killed at least nearly fifty mutant zergs.

Ning Chong ran the "Huaxia Martial Arts Technique", taking advantage of this short rest, and quickly recovered his energy. Simulating the aura in the cave, inaudible, converged into Ning Chong's body.

It's a pity that the first-order martial artist hasn't reached yet, if the first node is ignited, then a channel will be opened up in the body, and the effect of absorbing aura will be greatly improved.

At this time, the wind and sand suddenly moved not far away.

Ning Chong suddenly became alert and looked back.

Three mutated mantises, stout than adults, covered in hideous carapaces, wielding huge scythes, and four limbs like steel cannon barrels, sprinted in a frenzy.

The mutant mantis is a mutant zerg guarding the boundary bridge, and it is also the mutant zerg with the strongest combat power! Even if it is alone, it has the ability to fight a first-order martial artist.

What's more, there are three of them!

Ning Chong got up in shock and hurriedly ambushed his blood, but it was too late!

As the strongest mutant zerg, the mutant mantis completely ignored Ning Chong's concealment. Almost in the blink of an eye, the mantis scythe had already swung the wind and slashed over.

At this moment, in a state of battle, it was impossible for Ning Chong to exit the cave.

Let's fight!

Ning Chong abandoned all illusions, his whole body was boiling, and he pounced!