"The door is gone? What do you mean?"

Cheng Sikong looked back from the stairs, but they were already too far away from the gate that had first entered this underground fortress, and there was only endless darkness in sight.

"Physically, there used to be a door there, but now it's gone, I don't know why this happened, but my perception can't be wrong."

Kuang Jiaping closed his eyes and explored again, and when he opened his eyes again, his face seemed to be even worse.

"Not only is the door gone, but my geosensing abilities are also sealed in this underground space, and I can no longer perceive any changes in the outside world."

He looked down at the communicator, and sure enough, even the ground signal on the communicator showed "disconnected", but their telecommeter can support ultra-long-distance communication, even in the underground cave of the Butterfly Nebula Artificial Intelligence Control Center, they can maintain normal contact with the ground troops.

But now the signal is interrupted, they have been walking up just now, I don't know how long, it stands to reason that no matter how deep the underground fortress is, it should be close to the top, but no matter how they debug the communicator, the signal can never be restored.

"Is this underground fortress the cause, or anything else?"

Shu Yungui touched the cement gray wall beside him, except for the still cold touch, he didn't find any problems, he even tried to punch the wall with "Force Youqianjun", but the falling stones were also very normal cement materials, and there was no special interference.

"I guess someone deliberately wanted us in, and that vault may have been used to lure us in."

Cheng Sikong raised his eyes and looked up, the spiral staircase still had no end in sight, as if they had fallen into the "Ecstasy Ladder" in terror, and they might never be able to get out of this building.

At this time, there is no point in going back to find that gate, as Shu Yungui said, the soldiers will block the water and cover the earth, since the game set up by the other party for them has begun, then they might as well go in and have a good experience, and see if the thing behind the scenes is a human or a ghost.

"Let's go on, walk for another hour, if this building still has no end in sight, we will find a way to demolish it, I don't believe it, with our current firepower, we can't open an underground fortress."

Sure enough, all the fear of the unknown comes from the lack of firepower, now they have enough manpower in this team, and there is a whole fleet outside, once they find that the signal is lost, they will definitely find a way to rescue, so the team members in the underground fortress are not very worried about their safety, and they continue to walk up with Shu Yungui and Cheng Sikong.

Tired of trapping them in this building, they soon found the second platform that they had already walked through, and although the stairs had gone through countless floors, this was indeed the second platform area they had encountered.

The staircase connects two corridors that are the same as the outside of the vault, the difference is that the corridor on the left hand side is pitch black, while the corridor on the right hand side is very bright, as if the lights are on, Shu Yungui remembered that Gu Xingtang said that the underground fortress is composed of square modules, so the two corridors on the left and right should actually be interconnected.

He motioned for the team behind him to turn off the searchlights, and the group paused for a moment where the stairs met the corridor on the right, and soon heard the sound of rustling at the end of the corridor.

It seemed to be talking, and it seemed to be singing, accompanied by a rhythmic percussion sound, causing the glass window closest to Shu Yungui to be shaken to the ground.

"Is that a human or an animal over there?" Tang Yue shrunk his neck and asked.

Zhu Xinyue immediately turned the heavy sniper behind her, lay on the ground and listened for a while, this traditional cement building can amplify the sound, and after a while, she clearly heard the sound of people talking.

"May the great god of nature bless us......

The god of nature? What's that?

She got up and told Shu Yungui what she heard, and proposed, "I don't know who is pretending to be a ghost, why don't we just rush over and ask the one who is alive?"

Shu Yungui stopped her reckless behavior and explained, "In ancient earth literature, there was indeed a god of nature in the era of natural disasters

The environmentalists, who talk about restoring the environment, are in fact an excuse for the radicals, who ostensibly preach environmental protection but in fact aim to eliminate science and reduce the population, and what they do is nothing more than a bunch of refined egoists."

"That's right, these radicals used to perform bizarre rituals in the underground fortresses, brainwashing the common people, and in the years when the environmentalists were at their most rampant, even our school classes were shut down because of this, and they stormed the upper echelons of the fortress and nearly destroyed our experimental equipment."

Gu Xingtang, who hadn't spoken much all the way, suddenly spoke, he squeezed up and listened for a while, nodded and said, "That's right, it's this kind of prayer, they think that the earth is controlled by the 'God of Nature, and natural disasters are punishments that come down because of the wrath of the true gods caused by human beings destroying the environment, and in order to eliminate the divine punishment, they will not only carry out large-scale prayers, but also perform sacrifices."

"Sacrifice?"

This is not a good word, since ancient times, all sacrifices have been accompanied by death and bloodshed, Shu Yungui's eyelids jumped, before coming to the ancient earth, he had been consulting the information, although the information mentioned some of the remarks of the environmentalists, but did not record their actions, because it was indeed one of many groups that suddenly appeared, grew rapidly, and quickly disappeared.

During the period of natural disasters, it is normal for human beings to pin their hopes on various gods due to the low level of education, and other groups and factions also have their own spiritual symbols, but those are just imaginary things of human beings, and after the establishment of the unified government, these chaotic sects have been purged, so their existence is quite short-lived.

It's just that...... How did the splash of an unbenign culture that should have disappeared in the long river of history survive to this day?

Is there really an environmentalist who believe in the "god of nature" living in the underground fortress?

"What kind of sacrifice are you talking about? Homicide? Or is it something else?" Shu Yungui asked.

"Killing is just one part of the sacrificial ritual." Gu Xingtang recalled the dark time in the past, and the light in his eyes dimmed.

"Their sacrificial rituals are aimed at people and objects that are hostile to natural development, such as students in government schools, staff of scientific research institutions in high-rise buildings of fortresses, and various equipment developed by the government to deal with natural disasters, which you can understand as supercomputers, electromagnetic defense networks, river dredging robots, and so on."

"According to you, their goal is to eliminate all scientific ideas and scientific products from the earth, and they want to restore the earth to its original state in order to quell the natural disasters?"

Zhu Xinyue snorted and said angrily: "It's really stupid, even if some natural disasters are really caused by the blind development of human beings and the destruction of the environment, but there are many that cannot be controlled by human beings, could it be that the meteorites falling from the sky are also caused by human development science?"

Cheng Sikong raised his hand and knocked on her head, and said disdainfully, "You still don't understand? He realized that those conservationists believed that meteorites falling from the sky and spewing fires from the ground were divine punishments from the angry nature gods."

Zhu Xinyue covered her head and muttered: "But the god of nature didn't tell them personally that the solution to divine punishment is to destroy human science and civilization, the population was greatly reduced during the natural disaster, and they also attacked scientists, are they really not afraid that the human collective will finish playing?"

"It doesn't make sense for you to reason with these people with religious beliefs, this is the importance of education, if we don't build underground schools with the government, we will soon have this kind of feudal ignorance within us."

Shu Yungui shook his head slightly: "Once a certain regime is infected with a religious nature from the inside, then its development direction must be problematic, because these people can't treat the development of history and civilization correctly at all, and if they don't have a forward-looking eye, they are doomed to stagnate and wait for extinction, so the emergence of a unified government is very timely, although their methods of dealing with these religious groups seem to be too tough, but in terms of the environment at that time, it is very correct."

Zhu Xinyue nodded as if she didn't understand, but new questions soon appeared.

"But...... If the unity government really got rid of the radicals, who is the one singing in the corridor now?"

No one can answer this question, even if a group of radicals remained, but more than a thousand years later, the earth's ecology has returned to normal, is there still a need for such prayer rituals?

Everyone looked towards the end of the corridor in unison, but the strange sound of prayer suddenly stopped, the old wooden gate was suddenly opened, and a man wearing a bird's beak skull mask strode out, pointed at Shu Yungui and shouted, "Found them!"

Almost at the same moment, more than a dozen wooden doors in the entire corridor suddenly opened, and countless people wearing bird's beak skull masks poured into the corridor, armed with weapons, and rushed towards Shu Yungui and them like frightened bats emerging from the cave, shouting, "Kill those scientists!"

Cheng Sikong "tsk" and immediately evoked the "original space" to block the corridor, Zhu Xinyue picked up the heavy sniper and fired unceremoniously, the heavy sniper bullet blasted the bird-beaked skeleton on the leader's face into slag, and blood mist splattered, but this did not stop the crazy radical party from attacking them.

There are many entrances and exits on this quadrangular platform to reach the ladder where Shu Yungui is located, one of the exits was blocked by Cheng Sikong, and soon those masked people attacked from the other direction, the submachine gun in Kuang Jiaping's hand burst out of bright fire, and the masked people fell in pieces, but the crowd that surged up behind them was not seen at all.

Shu Yungui stepped forward to block one of the exits, he raised his hand to summon two fire dragons, the fire burned in the corridor, and as he continued to strengthen the wind, the fire dragons ran through the entire square ring space along every crevice.

In his ears was the sound of the masked man struggling and shouting, it was too tragic to be heard, Shu Yungui signaled the team members behind him to hurry upstairs, but Tang Yue, who was running in front, stumbled under his feet, and the stairs that were intact just now suddenly collapsed, not only Tang Yue, but also Shu Yungui and all of them, all of them were empty, and fell into the dark depths without warning!