Beneath Deep Space

"So, have you found that they used bronze or iron tools? Do they have the means to smelt metal?" Another scientist asked. This is asking about the progress of technological development of indigenous civilizations.

The difficulty of smelting bronze is slightly lower. The minimum temperature required is about 800 degrees Celsius. It only requires ordinary carbon fire. There is still some hope for these indigenous lizards. Small amounts of copper alloy materials can even be found in some natural copper mining areas.

The smelting of iron is more difficult, requiring high temperatures of more than 1,100 degrees, and special furnaces and ventilation methods are required. So it was just a question in passing, and scientists basically had no hope.

Of course, the prerequisite for smelting metals is that they can make fire!

Without fire, everything is in vain. It is impossible to smelt with magma, right?

According to the current sociology of mankind, the technological trees of ancient times include: language, writing, fire making, pottery making, animal husbandry, planting, bows and arrows, copper smelting, irrigation, etc...

These technologies are still slightly sequential. I don’t know how much these lizard natives have lit up.

Squadron leader Wu Hao was stunned again when he heard this question.

As the topic deepened, the inquiries of this group of scientists became more and more detailed, and they became more and more focused on details. But they didn't pay attention to these things at the time, so how could they answer it?

This time the question stumped the eight soldiers again. They could only sit around and discuss it again.

"...Those spears should be made of wood-like plants, not metal! There doesn't seem to be copper on the spear tips, right?"

"Yes, no metal..."

When they fell into the trap, the barbs inside should not be made of metal, but a hard wood fiber wedge!

Then... During the fight between Soldier Leo and the lizard man, there was no clear sound of metal collision. As if there was really one, these eight people should have an impression.

Wu Hao looked at the people around him, and even Leo shook his head. He was stabbed several times with spears. The sound should not be made of metal...

So, this group of lizardmen shouldn't have invented copper smelting. They couldn't cast copperware?

Before Wu Hao could say the last word, another young soldier seemed to remember something and shouted anxiously: "Yes, there is metal!"

"When they were dealing with the giant bugs, I took a curious look at them."

"Because the flesh of this insect is very strong, with a large amount of insect shell-like chitin on the surface, even using our power armor's electric saw will feel like a slight obstruction. So I am very curious about how they cut..."

"As a result... I saw a strange round piece of metal!"

"How should I put it? It's a perfectly round metal piece with no handle. There are saw-like barbs on the edge of the metal piece. It's very sharp!" The soldier looked up and looked a little nervous.

"its not right!"

As soon as he finished speaking, another scientist immediately spoke doubtfully: "Even if they can smelt copper and make cutting tools, it can't be a perfect circle?"

"Are you sure there really is no handle? A perfectly round cutting tool is not easy to use at all. This is unreasonable!"

"Furthermore...the difficulty of manufacturing and inventing the hook saw for the outer frame of the copperware should not be something they can do in this era, right? Think about it carefully, are you remembering it correctly?"

The scientist peppered him with questions, pointing out gaps in the soldiers' memories.

In fact, the reliability of human memory is not very high. It often makes mistakes, and sometimes it adds some information that it has guessed.

Especially for such ambiguous details, the error rate in recall is higher, so many scientists are skeptical of the soldiers' words. The final information still needs to be confirmed after they go underground to investigate.

The soldier suddenly turned red, and he found it incredible when he thought about it now.

The round cutting tool looks like the cutting gear of a cutting machine. It really has no handle...

Could it be that I really remembered it wrong?

But he thought about it carefully for a long time, and he did remember that what he saw was like that. At that time, I was very curious and confirmed it... yes, that's it!

"I...I remembered!"

Suddenly, Soldier Leo also shouted loudly: "That lizard... the leader of the lizard men, that lizard man seems to have something hanging around his neck. It jingles, and it sounds like it is metal... It seems like it!"

He finally remembered it now and shouted out in a hurry.

But the memory was very vague and he wasn't sure.

This problem can be solved by reviewing the video. No matter what, the video still captures the lizard leader more or less...

Everyone's eyes widened, and they began to play the video anxiously, and then fast-forwarded it at 8 times the playback speed.

Although everyone here has watched the video carefully many times, they subconsciously ignored the thing hanging around the lizard leader's neck... everyone thought it was a pendant such as bones, which was nothing surprising.

Unexpectedly, it is made of metal? real or fake?

This video was all shot under night vision conditions. It can almost be said to be a black and white video, so it is impossible to see the original color of the object...

It's actually normal to ignore some things.

"Wait, let's start from here!"

Yu Yifeng shouted loudly, and the video playback speed began to return to normal.

The leader of the lizard men on the camera is swaying his body in a swaggering manner, seeming to be in a very excited state. It took the piece of insect meat handed over by its subordinate, smelled it carefully, and then hung it on its chest with satisfaction...

This is the tradition of their tribe. Of course, the best meat must be dedicated to the strong leader!

Of course, such a big worm weighs at least three or four tons, which is enough for the whole village to enjoy for a while, and basically everyone can get a share.

The most important thing is that there are no dead among them, which is also the most satisfying point for the lizardman leader.

Thanks to these strange and powerful creatures, are they really messengers of the gods?

Then the lens of the lizard man leader was like this. It didn't capture anything particularly useful, because the hanging ornaments in front of its neck were blocked by a piece of insect meat...

"Play back a little bit!"

Before Yi Feng could say anything, Security Minister Xu Yunjin had already shouted out urgently.

The video was played back bit by bit. The leader of the lizard men took the piece of meat, and then the piece of meat flew back to the hands of his subordinates. At this time, something bright finally jumped out!

In an instant, everyone's hearts jumped to their throats!

Everyone can see clearly, a... a hexagonal nut?

No, not just one, but three!

"Enlarge the picture!"

Yu Yifeng said somewhat incredulously.

how could it be possible! How did modern steel nuts appear in primitive societies?

This is so inconsistent, just like a human watch appearing in fossils from the dinosaur era!

Maybe a nut-like bone? This is more likely!

Under the debugging of a technician, the image slowly grew larger.

The camera of New Human Civilization is pretty good, with very high resolution. Even if the image is enlarged several times, it is only slightly blurred, but can still be seen clearly.

These three round pendants really look like nuts, and they were hung around the neck by the lizardman leader as accessories!

"Enlarge the picture ten times more!" Yu Yifeng said. At the same time, his heart was beating wildly and an inexplicable feeling appeared in his heart.

Yes, it's just puzzling. Could it be that they were the screws left behind by humans somewhere and were picked up by them?

After a few seconds, the results came out. Due to the limit of the image resolution, blurry pixels like snowflakes appear.

But the shape of the hexagonal nut is becoming more and more obvious, and people can even see circles of threads in the central ring!

This... is undoubtedly a metal nut!

The one the size of your little finger!