Wearing heavy protective clothing, Song Ziyu followed the team out of the lower city shelter and came to the ground of his heart.

However......

It was pitch black all around, so dark that Song Ziyu doubted his life.

That's kind of incredible!

Song Ziyu looked around, then looked at the sky.

Even though he has the ability to see at night, Song Ziyu still can't catch the sun and moon in the sky.

And that's not all!

I have so much eyesight that it's hard to even see the stars.

"How so?"

Song Ziyu couldn't help muttering to himself.

"What's wrong?"

Xiao Ai asked.

"What about the sun and moon in your plane?"

Song Ziyu asked curiously.

"What does this sun and moon look like...... I haven't seen it either. Xiao Ai stroked half of his mechanical head and thought for a while and said, "But from the data I have stored about this, the sun was destroyed before I was born!" Without the sun, the moon would naturally disappear, because we can see the moon because of the sun. ”

"Destroying ...... Destroy? ”

Song Ziyu showed an incredible expression on his face: "You're not joking, are you?" Can you do anything about the sun? How do you do that? Why? ”

Xiao Ai replied: "I don't know exactly what means were used, but the information left by my optical brain tells me that in order to contain Sartre's attack, human beings at that time thought of destroying the sun to cut off the source of silicon-based life energy. ”

"So you destroyed the sun? How can you do that? Song Ziyu couldn't figure it out at all.

"I don't know...... I can't remember. ”

Xiao Ai hugged his head and made a painful sound.

"Forget it, I'll ask, why take it seriously?" Song Ziyu patted Xiao Ai's shoulder and motioned for Xiao Ai to stop thinking.

……

The team was ready to go, taking advantage of the darkness of the night to grope their way forward.

Seeing that Xiao Ai's mood was better on the way, Song Ziyu asked again: "So, after the sun was destroyed, has the situation become better?" ”

Xiao Ai shook her head and sighed, "No." ”

"Why?"

Song Ziyu asked, "Didn't you destroy the energy source of these silicon-based lifeforms?" Why is there still no comeback? ”

Xiao Ai sighed and replied, "Sartre has found an alternative energy source. ”

"What energy?" Song Ziyu asked.

"Yes, nuclear energy." Xiao Ai replied: "The core of our planet is also energy...... Sartre pierced the earth's crust and grabbed energy directly from the ground as a supplement...... In the end, we failed. ”

After listening to Xiao Ai's words, Song Ziyu's breathing became very heavy.

What a desperate realization that the human race in this world has struggled to such a point and finally lost.

With a heavy heart, Song Ziyu followed the team towards the Black Rock Shelter.

Although they couldn't see their fingers in the dark, with the help of the positioning equipment given by the professor, the team was still able to move in the established direction, and the journey was quite easy.

Because in this extremely dark environment, the mobility of silicon-based life forms is also minimized.

After hours of trekking, the sky began to glow.

But this light color is dim at best, and there is no sense of dawn at all.

Taking advantage of this environment, the team continued on their way, often seeing the wreckage of some human-destroyed buildings and metal machinery along the way...... Fortunately, there was no danger and arrived at the location of the Black Rock Shelter.

……

It is a naturally formed rocky mountain, and the majestic rocky mountain is the best hiding place.

The thick rock formations can well isolate the scanning of heat sources by silicon-based lifeforms, so as to achieve survival.

"The Black Rock Vault has almost pierced this rocky mountain, there's no reason why Sartre will find out!"

Xiao Zhao looked at the giant mountain in front of him and couldn't help but say.

"Don't be in a daze, take out the detector and check if there are any monsters around." Lao Zhao explained.

So several team members took out their instruments and began to scan around the rocky mountain.

After making sure that there were no silicon-based lifeforms around, Lao Zhao walked to a blasted rock layer and began to look inside.

A huge gap appeared in the blasted rock formation, and it is presumably from here that the silicon-based lifeforms entered the Black Rock Sanctuary, and then wiped out all the humans living here. 33

"Who's going to take the lead?"

Lao Zhao looked at the blast opening of the black hole and asked.

No one responded, in this case, anyone knows that there is no good end to being the vanguard, in case there are three long and two short, the first one to die is the vanguard.

So no one is in a hurry to die.

What a joke!

No one knows what happened inside the Black Rock Vault, and who knows if there would be danger inside?

Immediately, Lao Zhao looked at Song Ziyu.

"Mr. Song, please!"

Lao Zhao made a gesture of invitation.

Song Ziyu glared at Lao Zhao, then sneered, and then went into the dark cave.

The other team members behind him were about to follow, but Lao Zhao directly stopped them.

"What are you doing in there?"

Lao Zhao asked.

"Captain? What do you mean by that? ”

The team members were dumbfounded.

Lao Zhao said coldly: "After Mr. Song confirms that it is safe, everyone will go in." ”

"Oh!" The team members were thoughtful when they heard this.

But Lao Zhao's heart is very clear!

Others may not perceive it, but it is impossible for you to perceive the mistake yourself...... Hidden in this cave is Sartre!

This Sartre is very cunning!

It can fool the inspection instrument, but it is impossible to fool Lao Zhao's perception.

And the reason why Lao Zhao let Song Ziyu take the lead was completely out of selfishness.

Before Song Ziyu appeared, Lao Zhao's identity in the Xiacheng refuge was transcendent, and he was a courteous existence.

Not anymore!

Lao Zhao felt threatened!

This is a challenge to my own position.

Therefore, Lao Zhao really wanted to take this opportunity to get rid of Song Ziyu!

Of course!

It is very risky and unwise to do something like killing yourself.

Killing people with a knife is the most cost-effective deal.

Now, Lao Zhao is waiting for Song Ziyu to go in and die......

After about a few minutes, the sound of metal clashing could be heard from inside the Black Rock Vault.

This voice was very short, and Lao Zhao knew that he had succeeded!

"Everyone prepare, there is danger in the cave!"

Lao Zhao beckoned and pulled out the firearm on his waist.

When the team members saw the captain behaving like this, they all felt shocked and nervous, and at the same time, everyone also guessed that Song Ziyu was finished.

However!

Just when the tension is getting too high!

Footsteps came from within the dark cavern.

The footsteps are accompanied by a light humming.

In front of everyone's wide eyes, Song Ziyu walked out carrying the remains of a silicon-based lifeform.

Some people died, but not completely......