At half a second before the aircraft was about to hit the wall, the wall swung like a curtain blown by the wind, revealing a gap that just allowed the aircraft to pass through.

The aircraft flew into the wall, and the surrounding walls kept swinging, leaving a gap for it to move forward. From the perspective of God, it was like a fish swimming in the water, draining water wherever it swims.

Tang Xuan was once again amazed at the technological level of neutron war stars, and he asked: "How many years have you taken to develop to this level?"

The robot answered frankly: "After mastering the steam power, I experienced a lot of wars and got a lot of opportunities."

One million years after steam power...

Tang Xuan thought for a while and found that humans had only walked less than one percent of the way now. If they wanted to reach the level of Hill civilization, the Federation still had 990,000 years to go.

He sighed, "It actually takes so long."

The robot suddenly asked, "Is it long? As far as I know, the shortest lifespan of a star is several million years, and the longest lifespan is one trillion years. In comparison, one million years is not a long time."

Tang Xuan shook his head: "Human civilization is composed of countless individuals. The time scale of one million years is enough for all individuals to change 10,000 times. Human civilization a million years later has long been no longer the original civilization."

The robot fell silent after hearing this.

Tang Xuan didn't say anything, turned his head and continued to observe the surrounding scenes.

The closer you get to the depth, the more artificial things you have. Sometimes the aircraft will plunge directly into a large cavity, allowing him to see many mysterious instruments that have never been seen before.

After a while, the robot suddenly said, "I'm sorry, I always involuntarily ignore this fact and treat humans as a whole."

Tang Xuan said indifferently: "You are not wrong. As an intelligent life, you are immortal. It is normal to think about problems from a larger scale."

The robot said quietly: "But I made a big mistake because of this."

Tang Xuan felt a stern.

A big mistake means...

At this time, they passed a robot maintenance center and the aircraft stopped.

The robot jumped down: "Wait!"

It walked to a groove and lay in it. A robot that looked exactly like it stood in another groove next to it, but the robot was clean and clean, without any dirt.

The intelligent master brain has changed its body.

Tang Xuan looked at the assembly line next to him and found that the old robot had been transported up. The old robot first passed a water curtain with a lot of foam, and then was transported to other places for other maintenance work.

The new robot sat into the aircraft: "Where did we just talk about?"

Tang Xuan replied in a deep voice: "You said you made a big mistake."

The new robot's rotating robot arm made a crackling sound: "Yes, I made a big mistake."

Tang Xuan held his breath and concentrated.

He wanted to know whether the Hill civilization perished because of this mistake in the intelligent master brain.

"I discovered the Hill civilization. I thought Hill civilization had only one subjective consciousness just like me, so I stepped forward and said hello to them." The little robot's tone became extremely low, "They also said hello to me. I thought we could be friends, but I was wrong."

"What's the meaning?"

Is this intelligent life not created by Hill civilization?

Tang Xuan's eyes became solemn.

He heard a possibility that had not been considered before.

This time, the little robot did not answer him silkyly, but was silent for a few seconds. Finally, he said stiffly: "It's coming soon, let's talk later."

It seems like a different person.

The truth is about to be revealed. While waiting, Tang Xuan seemed to have a kitten scratching his heart, making him feel itchy.

What is the relationship between this intelligent life and Hill civilization?

How did it enter the neutron war star of the Hill civilization?

How much does the demise of Hill civilization have to do with it?

What happened to those warships outside?

What happened back then?

......

Many questions lingered in his heart.

Finally, they entered a spacious hall with many tables and chairs fixed to the ground and huge displays on all four sides.

The little robot pointed to an iron door located in the corner of the hall.

"I'll wait for you there."

After saying this, the indicator light on the little robot flashed several times, and he spoke a Hill language that Tang Xuan couldn't understand, and then jumped off the aircraft and walked towards the opposite direction to the door.

The intelligent master brain left the small robot, and driven by the program, the small robot began to work.

Tang Xuan sat alone on the aircraft.

He didn't understand why the intelligent master had to wait for him in that door. Is there any difference between inside and outside the door?

He wasn't worried about a trap behind the door.

The Hill civilization, which built neutron war stars, had no reason to place dangerous traps in the core area of ​​neutron war stars. After all, if an enemy really hits here, one or two traps would be useless.

Tang Xuan walked off the aircraft.

He was curious about Hill Civilization. He did not rush to push open the door, but walked to a table first.

There was nothing on the table, but a photo was inlaid in the transparent mezzanine on the surface of the table. The photo showed a man and a woman wearing pure white clothes standing on the lawn holding a child.

Men's faces are very majestic, women look very happy, and children smile very stupidly.

The former owner of this table must be one of the three people in this photo. I wonder if he will miss the other people in the photo just before death.

Tang Xuan pulled open a drawer and unexpectedly found that there were many documents inside. He was surprised to reach out to pick them up. But the moment he touched his fingertips, all the documents turned into brown-yellow powder.

There is a certain power in the drawer that can make things survive under the erosion of time, but when the drawer is opened, this power is lost.

Tang Xuan silently closed the drawer and no longer tried to open other drawers.

He walked towards the door in the corner, but instead of walking straight through the middle of the tables.

The surface of each table has a transparent mezzanine, and there is often a photo or a note in the mezzanine. This is the concern that the owners of the table encourage themselves to persevere in this place where there is no light.

However, there are tables that hold a form.

Although Tang Xuan could not understand Hill Civilization's words, he could see that it was a schedule, roughly allocating the table owner's time for the day.

He stopped by the table for a while with interest, and looked at the table and guessed the schedule of the owner of the table.

Finally, he came to the front of the door.

There was no handle on the door, so he tried to push it, and with a light click, the door opened in response. A golden light shot out from inside and turned around his head.

"You finally come to save me!"

The golden dragon scissors were excitedly circling around Tang Xuan.

"What did you do to my hair?"

Tang Xuan looked at his falling hair in confusion.

I'll save you...

That's how you repay me?
Chapter completed!