The countdown is over!

In front of Ning Chong's eyes, a virtual phantom-like interface instantly appeared.

"Cave Simulation System"!

Six regular big characters shine.

At the same time, the scorching heat of Ning Chong's right palm rushed straight to his brain.

A few minutes later, as the scorching sensation disappeared, Ning Chong had fully received the system information, completely mastered the system knowledge, and immediately became proficient in it.

"I see!"

Ning Chong smiled and whispered, feeling more cheerful than ever.

What is a "cave"?

In this world, the "Cave" is a well-known existence!

Since the revival of the earth's aura, the world has set off a cultivation frenzy, and martial artists have risen. In this evolutionary era, the "grotto" also entered the earth's space.

In the beginning, there were a large number of supernatural events in a large number of parts of the world.

Many inhabitants of various countries, in specific places, will receive a strong spiritual calling. When they are spiritually induced to enter a special area, they will be attacked by mutated murderous creatures.

Mutated beasts have different appearances, including mutant zergs, skeleton soldiers, spider monsters, werewolves, bear monsters, and even powerful monsters such as vampires, ravens, and ghost riders.

A large number of induced residents have become blood food for mutated beasts.

The bloody death brought about by the supernatural event has attracted the attention of warriors around the world. In the end, after the bloody battles of warriors from all over the world, the "secret of the cave" was gradually revealed.

"Cave", according to the official explanation, is actually an invasion of foreign creatures. Due to the earth's environmental factors, these foreign creatures cannot appear and can only exist in parallel space.

In order to invade the earth, the outlandish creatures that cannot appear are forced to lure the inhabitants in parallel space and carry out massacres. Moreover, "caves" are everywhere and cannot be predicted, and "caves" will appear in any country and any region in the world.

Although this official statement has aroused doubts on the Internet.

But the invasion of the "caves" is real, and the massacres are ongoing. In order to resist this invasion, the global warriors are fighting in the "cave" space every moment to destroy the creatures of the outer land.

Danger and opportunity always coexist.

The Earth Warriors were pleasantly surprised to find that the whole body of the "cave creatures" was a treasure! Whether it was the cortex, carapace, limbs, blood, or crystals, they were all precious materials to promote the evolution of the warriors.

The level of biological research on the earth has also achieved great results.

Genetic agents, biological armor, weapons and equipment continue to be developed.

Even the world's martial arts have been evolved and improved because of this!

Legendary martial arts are gradually becoming a reality, and martial artists around the world are benefiting greatly!

The "Cave" has changed from danger and crisis to a strategic resource for global warriors. The whole world is studying the "Cave", forming all kinds of fierce competition!

But in recent years, the "caves" have become more and more powerful! and even the official theory is that in time, the "caves" will completely appear on the earth, free from the shackles.

Eventually, the "Cave" will destroy the Earth and cause a global catastrophe!

For the sake of the safety of the earth, the global warriors have organized and targeted anti-aggression.

The ever-changing martial arts, endless strategies and tactics, and even various forms of competitions and national competitions have appeared, pushing the warriors to actively fight!

Ning Chong silently recalled these common senses.

I looked at the "Cave Simulation System" with great interest.

There are four main options for the system:

1. [Cave Creation].

2. [Cave Search].

3. [Yinying Illustrated Book].

Fourth, [system upgrade].

First of all, the Cavern Creation option is divided into five subcategories:

1. Luyuan Cave (activation);

2. Blue Source Cave (none);

3. Ziyuan Cave (none);

4. Chiyuan Cave (none);

5. Golden Nest Cave (none);

Except for the "Green Source Cave", which is activated, the other caves are blank and need to be activated step by step, waiting for the further development of Ning Chong.

And except for the first major item [Cave Creation], the other two, three, and four items are also gray and untouchable. It will only be enabled after the first item is created.

So the top priority now is to create a "green source cave"!

Ning Chong silently recalled again the knowledge system about the cave.

The Green Source Cave is the lowest level of the cave found so far.

Tier 1 Martial Artists and Tier 2 Martial Artists can enter the Green Source Cave.

The symbol of the Green Source Cave is that there is a light green light curtain outside the space. As long as you pass through the light curtain, you can enter the Green Source Cave and face the terrifying creatures in the cave.

The strength of the cave is equal to the strength of the warrior who enters.

The Green Source Cave corresponds to a Tier 1 Martial Artist and a Tier 2 Martial Artist.

The Blue Source Cave corresponds to a Tier 3 Martial Artist and a Tier 4 Martial Artist.

The Purple Source Cave corresponds to a 5th-order martial artist and a 6th-order martial artist.

And so on, due to the limitation of space rules, warriors can only enter the corresponding cave. If the level is too high or too low, you will not be able to enter.

Ning Chong opened the "Green Source Cave".

The description shows:

Green Source Cave: Creation value (0/100).

Creates requires 100 Green Source Points.

When the green source point absorbs the full amount, it can start to create.

How can we absorb the green source point?

Of course, you can only do it by entering a green source cave.

Ning Chong couldn't help but smile dumbly.

It's really a mouth, and a broken leg is done!

Easier said than done!

The Green Source Cave can only be entered by 1st and 2nd order martial artists. This is a restriction of the space rules, whether it is high or low.

As an ordinary person, it should be impossible for Ning Chong to enter the Luyuan Cave.

However, after years of development of the earth, there is a perfect system for exploring the caves. Nowadays, ordinary people can enter the caves.

Warriors have found that a swept cavern will have a vacuum period of 720 hours, that is, 30 days.

During the vacuum period, the cavern was silent and remained.

But as soon as the deadline expires, the drotto will be refreshed. Either it is still in place, or it has teleported to another area, which is not detectable and needs to be re-founded.

Therefore, during the vacuum period, the cave is safe and free of any living things.

And ordinary people can enter and visit.

Warrior organizations around the world will be stationed every time a cave is emptied. It will even be open for sales visits to earn extra money as a means of collecting money.

After all, martial arts cultivators consume amazing wealth, so why not make more money.

Ning Chong quickly opened his mobile phone to search.

The closest to Jiang City, the "Green Source Cave" in the vacuum period.

......

Jiang City, far suburbs.

The bus kicked up a puff of dust and stopped at a suburban stop.

Ning Chong walked off the bus, and then after arriving at the bus stop, he rode on a shared electric bike.

The target is a controlled area five kilometres away.

After some trekking, Ning Chong had already seen a wall in the distance.

It is as if it is the wall of the military control zone, enclosing a range of miles. On the periphery are patrols of warriors in guard uniforms, and at the solemn gate, a reception building has been built.

Dozens of people were queuing up outside the building.

"Zhenwei Elite Martial Arts Hall, Special Chinese Green Brand 03698565 Cave ......"

At the top of the entrance, a shiny steel sign hangs.

The green logo represents the "green source cave".

This is a cave that is guarded by the town of Mighty Martial Arts and is open to the public.

When the vacuum period has elapsed, the cavern may re-spawn or teleport to any part of the globe. Curious civilians, hurry up and visit.

"Drop!"

There was a soft thud.

Ning Chong was outside the reception building, scanning the code with his mobile phone and buying tickets.

The ticket is 10,000 yuan, and the visit time is 8 hours.

Ning Chong looked at the crowd in line and sighed secretly. During the 30-day vacuum period, the Zhenwei Martial Arts Hall is estimated to make a lot of money. And this is only the green source cave, if it is a blue source or a purple source, the ticket price is even more amazing.

But no matter how expensive it is, it can't stop the surging curiosity of civilians.

Can't go in and fight?

Ning Chong followed the crowd step by step and walked towards the entrance.

After passing through the police post that was hung and scanned, a light green light curtain appeared in the distance.

The appearance of the light curtain looks like a whirlpool magnified countless times, three meters high and six meters wide. The green light flickered and flickered, like waves of water, revealing an eerie atmosphere.

One by one, visitors walked into the light curtain and disappeared inside.

Finally it was Ning Chong's turn, he took a deep breath and raised his feet to enter.

It's just a slight dizziness, and the eyes suddenly brighten!

Then, as if you were in another world, everything changed!