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After killing the last five dark warriors and an alien flying object, Ling Feng was ready to leave Gandong Province and return to the base camp in Linhai City. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Before leaving, after hesitating, he chose to return to Jiushi Mountain again, preparing to conduct a final search for the huge karst cave like a labyrinth underground.

If he didn't conduct a thorough search for this underground cave, even if Ling Feng left, he wouldn't be at ease.

At half past five in the afternoon, Ling Feng came to the foot of the core area of Jiushi Mountain again, standing outside the entrance of the cave, he ordered the robot again: "All the robots obey the order, now start to enter the cave to search, no matter how much time it takes, be sure to carefully explore any corner in the cave!" ”

When the robots heard the order, they responded, "Yes, sir!" ”

Soon, more than 20,000 robots, armed with various arms and weapons, as well as various detection and search equipment and instruments, poured into the huge underground cave like a tide.

Ling Feng also wore protective clothing and protective helmets, and under the protection of dozens of ninth-generation robots, he followed the search army of robots and entered the cave.

More than 20,000 robots searched for three or four hours in the huge karst cave, but they didn't find any useful clues, and this result really made Ling Feng's heart half cold.

By this time, it was already dark outside.

Ling Feng looked at the time and found that it was almost ten o'clock in the evening, more than two hours later. It's a new day.

It has to be said that the structure and scale of this underground cave. It's huge!

Although Ling Feng had come in before, he hadn't really searched and probed around, so although he knew that this cave was very big, he probably didn't know how big it was.

Now, under the protection of dozens of robots. It took him several hours to turn around almost all the corners of this underground cave, and finally had a new understanding and concept of the scale and area of this huge cave.

Because, this underground labyrinth-like cave is too big and terrifying.

Tens of thousands of robots are scattered inside. It's like a stone sinking into the sea, and if you don't connect through your mind, the chances of these robots meeting each other are very small.

Fortunately, there are more than 20,000 robots searching the cave this time, and if they were ordinary people, it is estimated that they will not be able to search the entire cave clearly in a few days and nights. And in this labyrinthine cave, it is easy for ordinary people to get lost and trapped.

Ling Feng was lying on the back of a robot, and as the robots quickly jumped and ran and moved, he was able to walk through the underground cave in just a few hours.

Until now. Ling Feng had a general understanding of the structure and shape of this underground cave.

This underground karst cave should have been a group of karst caves in the area of Jiushi Mountain. However, these karst caves seem to be all integrated, all the caves, as well as all the cave spaces, are all connected in all directions.

From the entrance of the cave into the cave, the structure of the entire cave is like a spiral pattern, not only extending downward, but also going deep into the ground for nearly 300 meters.

The cave can be roughly divided into three layers: upper, middle and lower, and the internal space area of each layer of the cave is at least millions of square meters.

Moreover, these three layers of karst cave space are full of twists and turns in the cave passages, and the terrain is complex and changeable, but they are interlocking, and there are connections and connections at all levels.

Anyway, the layout and scene inside the entire karst cave are very strange and magical, although there are no traces of artificial carving in it, it seems to be naturally formed, but Ling Feng has always suspected in his heart that this kind of weird and magical underground karst cave cannot be generated by nature, it is definitely deliberately done by some unknown alien creatures.

For example, the Dark Bug Emperor, why did it have to choose this place as its lair? And also bred a large number of dark warriors in the cave.

Judging from the limb forms of those dark warriors, they are strikingly similar to the corpses of alien creatures that Yanagihashi had encountered inside the alien flying objects before.

Moreover, what surprised Ling Feng even more was that these dark warriors actually possessed powerful wisdom and intelligence, which could be seen from their escape to the top of the Nine Stone Mountain. What puzzled him especially was, hadn't these dark warriors just hatched in this cave?

It stands to reason that they should have never touched anything like an alien flying object, but just now, the six dark warriors were stunned to lift a tattered alien flying object that fell on the top of the mountain to a height of 100 meters, and they also used the terrifying giant ladybug bomb to counterattack their mecha troops, so they almost hung up.

What made Ling Feng even more puzzled: Why were those dark warriors not afraid of the sun? If they were alien creatures bred on Earth by the Dark Bug Emperor, they should be afraid of sunlight, right? However, the dark creatures seen during the day today, whether they are cubs or mature monsters, are immune to sunlight.

This is very unreasonable! Very unreasonable!

According to Liu Qiao, when he came to the top of Jiushi Mountain to investigate the fall of the alien flying object, they personally entered the inside of the flying object and moved all the bodies of those dark alien creatures out of the alien spacecraft, and they also saw with their own eyes that the corpses of these alien creatures spontaneously combusted without fire under the irradiation of the sun, and became a cloud of black ashes in the blink of an eye.

Now that these dark warriors are not afraid of the sun, what kind of strange mutation has been produced on their bodies?

Thinking of this, these things seemed to be like mysteries, no matter what Ling Feng thought, he couldn't solve them!

Soon, tens of thousands of robots led by Ling Feng had been searching in the cave for nearly six hours.

In these six hours, they turned the upper, middle, and lower layers of the cave all upside down, but they didn't find any trace of the Dark Worm Emperor.

This time, Ling Feng had to give up.

Seemingly. The Dark Bug Emperor must have left here, as for when exactly it left. This Ling Feng is not clear.

Thinking of this, Ling Feng looked at the time and found that it was already half past eleven in the evening, and immediately he ordered all the robots to withdraw from the cave and return to the surface.

And he himself was carried out by several robots at the first time.

Standing outside the entrance of the cave, Ling Feng crossed his waist with his left hand. With a cigarette in his right hand, he began to silently count the robots that had retreated from the inside of the cave.

Soon, a large number of silver-white eighth-generation robots came out of the cave, and their movements were extremely fast.

After some counting, Ling Feng found that the robots that had entered the cave should have almost come out.

But. Because there is a 100-person robot search team that has entered the lowest level of the cave to search, it may take them a little longer to return to the ground, as long as they come out. Ling Feng immediately led all the robots back to Linhai City.

Ling Feng contacted the hundred-person search team in his mind and asked them what they found at the lowest level of the cave.

The robots told Ling Feng that they were searching the last corner, as long as it was okay after checking that corner. They immediately returned to the surface.

Hearing this, Ling Feng nodded. I secretly appreciated in my heart: "The robot is reliable, it will never cheat, and it will not cut corners, such subordinates are really good to call!" ”

Taking a deep breath of smoke, Ling Feng looked at the entrance of the huge karst cave in front of him, and sighed secretly, thinking to himself, this karst cave is so huge, and the internal structure and landscape are even more magical and weird, now is a time of disaster, if it is left in the previous peacetime, I don't know how many tourists will be received every day to visit!

If all the facilities of this cave are improved, it is estimated that millions of tourists will pour in at one time, and it should not be particularly crowded! If you build a cave hotel in it, it will be even more attractive! Hehe......

Thinking of this, Ling Feng began to be proud of his business acumen, and suddenly, as if he had thought of something, he muttered excitedly: "This underground cave is so huge, and it goes deep into the ground, whether it is the internal space or defense, it is like a natural underground fortress, and it is extremely strong!" If you hide in this cave, even the giant ladybug bombs thrown by those alien ships will not be able to shake this place in the slightest!

If I were using a large number of robots to modify and build the inside of the cave, wouldn't it be possible to build the cave into an underground shelter? As long as the space inside the cave is used properly, once the construction is completed, it will definitely accommodate millions of survivors! At that time, a few days before the arrival of Advent Day, he can send all the more than 800,000 survivors in Linhai City to this underground shelter en masse, so that these people will not be killed by the attack of those alien creatures when Advent Day comes. ”

You must know that like the ladybug bombs launched by those alien creatures, the dark storm generated after the explosion is estimated to be affected even if you hide anywhere in Linhai City. This is still the only attack that Ling Feng has seen so far, as for those alien creatures, whether there are other more powerful weapons, no one knows this!

However, in order to build this huge group of karst caves into a huge and solid underground shelter, you will need a lot of cement, steel, and various building materials, which you can find so much at one time.

Ling Feng patted his head violently and shouted, "Hey! …… How can I forget the birthday gift given by the system! Don't I have an infinite secondary warehouse that I haven't used yet? Inside this thing is some construction equipment such as cement, steel, wires and water pipes...... Haha, with this auxiliary warehouse, I will order hundreds of thousands of eighth-generation robots to let them build this huge underground cave into the world's largest and most powerful underground fortress in the fastest time! When the time comes, all the survivors in the south will be placed inside, and Lao Tzu will be able to let go of his hands and feet......"

Just as Ling Feng was still muttering to himself, suddenly, those robots who had gone deep into the bottom of the cave had an urgent report in their minds: "Report sir, we have made a major discovery!" ”

Hearing this, Ling Feng's face changed suddenly, and he hurriedly asked, "What did you find?" ”

"At the bottom of the cave, we found a snow-white alien creature, according to the commander's previous description, it should be the Dark Bug Emperor! However, it is dead at the moment! And the internal tissues of the body are seriously corrupted! ”

"What! Is the Dark Bug Emperor dead? ”

Hearing that the Insect Emperor was dead, Ling Feng seemed to have been splashed with a scoop of cold water suddenly, and it was cold from head to toe, but he didn't see the corpse of the Insect Emperor, he would not give up, so he ordered those robots: "Immediately bring out the corpse of the alien creature to me, and I will personally examine it!" ”

"Yes, sir!" The robots responded loudly...... (To be continued.) If you like this work, you are welcome to come to the starting point (.) to vote for recommendation, monthly pass, your support, is my biggest motivation. For mobile phone users, please go to m.. Read. )