These words brought Chen Tian an unprecedented sense of shock. "I don't really understand the specific concept of the edifice system you are talking about, and I have never found anything practical in this site other than the content of the frescoes, let alone any technology that is ahead of its time. If humanity had possessed this technology, the inventor or discoverer must have been someone else. What's more, I'm trapped here now, and if I hadn't found you, I wouldn't have had the opportunity to tell the people of the outside world about the situation here. ”

He stood up and took the diving suit and handed it to Nan Qiyun. "I'm running out of oxygen here, do you have a way to get out?"

Nan Qiyun took over this heavy set of equipment. "Won't you leave with me? Near this stretch of water is a miniature submersible that I came on, and we can leave together if you wish. One of the main goals of our operation is to find you. We want to know more from you. ”

Chen Tian shook his head. "I tried to go up above the sea in my wetsuit, and at that altitude I couldn't go any further. It's not the submersible that's trapped, it's me. It seems that the owners of the ruins do not want what I have seen and found to be made public. He smiled helplessly.

"I'm not leaving, you can go. That's all I know about this site. You don't belong to this world after all, and they shouldn't be able to trap you. Chen Tian took out a small drawer under the wooden table and took out a small notebook, the cover of which had been slightly yellowed, and it looked like it was some years old.

"This diary has followed me for most of my life, and it records a lot of things that I have experienced and participated in, and there will probably be some things you want to know, which may be helpful to you."

The submersible's oxygen index was slowly dropping to a very low level, and the air indicator on the bridge was constantly flashing and the alarm sounded. Nan Qiyun put the diary in his pocket and put on a diving suit. He opened the hatch and checked the position of the other three members.

Nan Qiyun slowly left the submersible. After swimming a few dozen meters out of the hatch, he turned his head again.

In this space wrapped in endless darkness, the small submersible was lonely and lit up for a short time. Through the pressure-resistant glass window, he saw that Chen Tian was still sitting in front of the wooden table, on the table, there were two small wine glasses, placed in the cup in front of Chen Tian, the bright red elixir like blood, under the reflection of the light, emitted a dim purple light. Chen Tian sat on the chair, his head slightly bowed, his eyes slightly closed, his hands interlaced, placed on the table, like a sleeping person.

It's just that this sleep will probably take a long, long time.

Nan Qiyun suddenly thought of the countless ashes he had found in Hall 107 during his last trip to explore the ruins, and he could still vaguely remember the armband he found there at that time, and the vague word "America" on the armband was still vivid. He was shocked, didn't the Navy SEAL armband Wright wear on his hand have this word? Thinking about it this way, the source of those ashes has also been decided. He didn't dare to think any further. They all died at his hands, at the hands of him. It was still difficult for him to accept the fact that he had been manipulated by the illusion and carried out the shooting operation, and it was even more difficult to accept the fact that he had taken the life of Ryon while he was conscious. Wright's last look of surprise at him, full of loss and despair after being betrayed, was very similar to the members of the detachment who fell to the ground, and their bloody eyes were not exactly this kind of look?

In his heart, he felt extremely guilty and self-blame, and in this seemingly endless guilt and self-blame, it seemed to be mixed with a little fear and anxiety, like a sharp knife, piercing into the depths of his soul.

The blood flowed like an infusion.

Nan Qiyun made contact with the other three members of the group and eventually joined them at the entrance to the ruins passage.

They were not involved in the specific exploration of the site and were unaware of what was happening at the site. Nan Qiyun hid from them the fact that he had shot and killed the members of the detachment. He lightly recounted how he had entered the ruins until now, and he did not describe much about what had happened in Hall 107, except to explain that the men had died under the illusion of the ruins' architecture.

He focused on narrating to the other three the circumstances and content of his encounter and conversation with Chen Tian.

Due to the amount of information they received was far from what they had previously thought, the other three members of the group looked incredulous.

"We need to inform the government of these situations as soon as possible." The 1st made the decision as soon as possible.

According to the operational arrangements of the time-retracement plan, in the extremely critical part of information circulation, the government has selected several regional locations in the 19 areas where human activities are rarely involved and geological activities have been relatively weak for more than 300 years, and according to the plan, the members of the detachment who have returned to the past will keep important information in these hidden locations, and under normal circumstances, this information will be kept in these locations for the next 300 years, waiting for the coalition government to explore and excavate in the following era.

This is the safest and safest way for the government and the members of the detachment to transmit information, as long as the detachment members successfully save the information as planned, then the coalition government in the future era will have access to this important intelligence information as soon as possible.

Chu Han quickly integrated what Nan Qiyun had stated into a complete information document.

Han Xian waved his hand. "Isn't it time to think about where we're going next? This operation does not seem to have achieved the results we had hoped for. Now that all the members of the other detachments have been killed in action, we need to rely on our own strength to complete all the next action plans. ”

"Of course, we can also choose to go back to our time," he added, "after all, according to the original plan, our mission was only to go back to the present and explore the ruins of prehistoric civilizations." ”

Based on the content of the murals that Chen Tian saw at the site, it can be roughly inferred that the history of the "Heiti" civilization dates back to at least 1281, and it was in contact with the rulers of the Yuan Dynasty in China and Japan at that time. The original place of origin was not in the era in which the Nanqiyun group is now, and the history of prehistoric civilizations coming into contact with the human world much earlier than expected.

The decision was in the hands of Nan Qiyun, who was the leader of the group. With the collapse of the 1,000-strong detachment, the coalition government's "retrospective" operation can almost be said to have ended in failure, and in the absence of and it is impossible to get the government's next specific arrangements, how to choose the next action has become a primary issue for the Nan Qiyun group.

If there is no good and complete solution to the "black body" problem, then even if they return to the era in which they live, relying only on the information obtained now, it will not play a significant role in the bad situation at that time, and then the final result is to accept the fact that human beings have been completely replaced by prehistoric civilization.

"Now, I'm the only one left here," Nan Qiyun looked around at the three people standing beside him, "The government has entrusted the fate of all mankind to us, and as a group trusted by the government and all mankind, we can't live up to the expectations of so many people." ”

"I think you know what I mean." His tone was full of solemnity and solemnity.

"I'm for it." Number 1 was the first to express his attitude, and for the first time a resolute look appeared on his fair face.

Han Xian shrugged. "Can I still have a reason to object?"

Chu Han straightened out the military uniform on his body, and the rank on the epaulette seemed to be stained with a little dust.

He reached out and wiped it.

His movements suddenly stopped. At a certain moment just now, the hand on his shoulder seemed to suddenly become transparent, faintly like a mist about to dissipate, and his body seemed to feel a slight sense of powerlessness. When I blinked and looked again, the appearance of my hand was back to normal.

The feeling just now still comes back to mind. He reached out again, trying to wipe the rank off his shoulder, and so on several times.

"What's wrong?" Han Xian felt that Chu Han's appearance was a little strange. He squinted his eyes, as if he felt that Chu Han's body had turned transparent at a certain moment just now, and through his body, he could even see the black seascape outside the window behind Chu Han. He almost thought there was something wrong with his eyes.

"It's nothing," Chu Han raised his head, "I have no problem with this." ”

Han Xian glanced at Chu Han again, and there was nothing abnormal. He patted his head, thinking that it was probably due to his fatigue.

Nan Qiyun walked to the cab. "Let's go. We don't have a lot of time left. ”

Nearly two days have passed since the initial execution time of the operation, and although it is possible to travel back and forth in time through the time machine, since the actual number of time days consumed by the members of Nan Qiyun's group is two days, the era that belongs to them now is not the point in time when they first set out, and according to the amount of time they consume in the process of tracing the stream, the era they should actually be in will also move backwards with the same amount of time. Therefore, for the four members of the Southern Qiyun group, the actual time node corresponding to them should be July 9, 2423, two days later than the beginning of the operation.

Although it is possible to go back to the time point of the initial action through the time machine, due to the equivalence effect of consumption, the initial time point has become history for the Nan Qiyun group, and everything done in that time period will trigger the corresponding time paradox to varying degrees, which will affect the subsequent time process and even lead to the collapse of the rules of time and space. Although these are still only theoretical, they can never be verified in practice.

Now under the control of the coalition government, the index of infected people is increasing wildly uncontrollably, and the time is generally unfavorable to the members of the operation, not to mention that the original detachment of 1,000 people has almost been wiped out. Now the only people who can carry out this plan are the four members of Nan Qiyun's group.

This heavy burden of responsibility was helplessly pressed on the shoulders of four people. Nan Qiyun looked out of the anti-pressure window, the bright light emitted by the submersible and the surrounding darkness were intertwined and redundant, this dark and long road, travelers don't know whether they can finally reach the end, and if they are not careful, they may be completely buried by this bleak space. This is the cruelty of nature, life and death, forever opposed, forever fighting each other, just like human beings and "black bodies", each other is trying to fight for control of life, either you die or I die.

In the depths of the ocean, the submersible continues to travel alone in the dark.