Just a fraction of a second before the craft was about to hit the wall, the wall swung like a curtain blown by the wind, revealing a gap just enough for the craft to pass through.

The aircraft flew into the wall, and the walls around it swung constantly, leaving a gap for it to move forward. From God's point of view, it's like a fish swimming in water, draining the water wherever it goes.

Tang Xuan was once again amazed by the technological level of the Neutron Battle Star, and he asked, "How many years has it taken you to develop to this level?" ”

The robot candidly replied: "A million years after mastering steam power." During this period, I experienced a lot of wars and got a lot of opportunities. ”

A million years after steam power......

Tang Xuan thought for a moment and realized that the human race had only walked less than one percent of the way now. If you want to reach the level of the Hill civilization, the Federation still has 990,000 years to go.

He lamented, "It took so long. ”

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

Tang Xuan shook his head: "Human civilization is composed of countless individuals, and the time scale of one million years is enough for all individuals to change ten thousand times. A million years later, human civilization will not be the original civilization for a long time. ”

The robot fell silent when it heard this.

Tang Xuan didn't speak, turned his head and continued to observe the surrounding scene.

The closer he got, the more man-made objects became, and sometimes the craft would plunge directly into a large cavity, allowing him to see a mystical array of instruments that he had never seen before.

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

Tang Xuan said nonchalantly: "You are not wrong, as an intelligent life, you are immortal, and it is normal to think about problems on a larger scale." ”

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

Tang Xuan's heart sank.

Big Mistake Refers to......

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

The robot jumped: "Wait a minute! ”

It walked to a groove and lay down, and in another recess stood a robot that looked exactly like it, but the robot was neat and clean, without a trace of dirt.

The intelligent mastermind has changed its body.

Tang Xuan looked at the assembly line next to him, and he found that the old robot had been transported. The old robot passed through a curtain of foamy water and was then transported to another location for other maintenance work by conveyor tracks.

New robot sits into the aircraft: "Where did we just go?" ”

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

The new robot rotates its robotic arm with a clicking sound: "Yes, I made a big mistake. ”

Tang Xuan held his breath and stared.

He wondered if the Hill civilization had perished because of this mistake of the intelligent mastermind.

"I discovered the Hill civilization, and I thought that the Hill civilization had only one subject consciousness like me, so I went up to say hello to them." The little robot's voice became extremely muffled, "They greeted me too." I thought we could be friends, but I was wrong. ”

"What do you mean?"

This intelligent life was not actually created by the Hill civilization?

Tang Xuan's eyes became solemn.

He heard a possibility that hadn't been considered before.

This time, the little robot did not answer him silkily, but was silent for a few seconds, and finally said in a stiff voice: "It's coming soon, let's talk later." ”

It's like a different person.

The truth is about to be revealed, and in the time of waiting, Tang Xuan's heart seems to be scratched by a kitten, which makes him itch.

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

How did it get into the Neutron Warstar of the Hill civilization?

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

What's going on with those battleships out there?

What really happened back then?

......

Many questions lingered in his mind.

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

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

"I'll be waiting for you there."

After saying this, the indicator light on the little robot flashed a few times, and he said a word in Hill that Tang Xuan didn't understand, and then jumped off the aircraft and walked in the opposite direction of the door.

The intelligent mastermind left the little robot, and the little robot began to work under the drive of the program.

Tang Xuan sat alone on the flying machine.

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

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

There is no reason for the Hill civilization that is building the Neutron Warstar to set dangerous traps in the core area of the Neutron Warstar, after all, if there is really an enemy to hit here, one or two traps will not help.

Tang Xuan stepped off the aircraft.

Curious about the Hill civilization, he didn't rush to open the door, but walked over to a table first.

The table was empty, but in the transparent mezzanine on the surface of the table was a photograph of a man and a woman dressed in pure white standing on the lawn holding a child.

The man's face is majestic, the woman looks happy, and the child smiles innocently.

The former owner of this table must have been one of the three people in this photo, and it is unknown if he would miss the other people in the photo in the moment before his death.

Tang Xuan casually opened a drawer and was surprised to find that there were many documents inside, and he reached out in surprise to pick them up. But the moment he touched it, all the documents turned into brownish-yellow powder.

There is some kind of power in the drawer that allows things to survive the washes of time, but when the drawer is opened, this power is lost.

Tang Xuan silently closed this drawer and stopped trying to open the other drawers.

He walked to the door in the corner, but instead of going straight to it, he passed 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, which is the concern of the owners of the table to encourage themselves to persevere in this place that does not see the light of day.

However, there are also tables that will hold a form.

Although Tang Xuan couldn't read the text of Hill Civilization, he could see that it was a timetable, roughly allocating the time of the table owner for a day.

He lingered at the table for a moment with great interest, looking at the table, guessing the agenda of the owner of the table.

Finally, he came to the door.

There was no handle on the door, and he pushed it tentatively, and with a soft click, the door opened. A golden light shot out from within, circling around his head.

"You've finally come to save me!"

Jin Jiaojian excitedly circled around Tang Xuan.

"What did you do to my hair?"

Tang Xuan looked at his falling hair in a daze.

I'm here to save you......

That's how you repay me?

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