The silver-black exterior, flowing with the texture of metal, seems to tell the observer about its extraordinary, but the soft pulp and unique ornamentation attached to its surface all show its essence that has spanned thousands of years.

It's a paradox.

Qin Yu knew that the metals widely used in life in the Spring and Autumn Period were copper and iron, especially iron, and there was already a complete iron smelting technology at that time, and iron products had been put into life and production in large quantities, although it could not be said to be everywhere, but it was by no means a rare thing.

But at the moment, the material of this pendant, even if it contains iron elements, must be extremely low, because when Qin Yu tried to adsorb it with a magnet, there was no reaction at all.

It is a strange feeling that more than 2,000 years have been without rust, the surface is extremely moist, the weight is handy, and the shape is extremely delicate.

It's as if you have a cool phone in front of you, and the appearance is not damaged at all, but you know very well that this is something from 2,000 years ago.

When Qin Yu traveled through the past, he did appear in an ancient city in the Spring and Autumn Period, and the tomb unearthed at the end of the pendant was also from that period after research.

He was stunned and played with the pendant in his hand, and said to himself, "It can't really be alien technology, right?"

As soon as I think of this, I have to think of another treasure that has appeared in history - the sword of King Goujian of Yue, which is now stored in the Hubei Provincial Museum in Han City, and belongs to the treasure of the town hall.

Although Qin Yu had not seen this sword with his own eyes, he had heard a lot of rumors.

Legend has it that this sword was unearthed in an ancient tomb group in the Yangtze River basin with frequent rain, and it is still extremely sharp after being unearthed, and there is no trace of rust after contacting the air, and it can even easily cut through sixteen layers of white paper, which can be said to be sharpened like clay.

But as we all know, the burial goods in the ancient tombs, often in the moment of unearthing, will be oxidized because of a large amount of contact with air, bronze products will generally rust instantly, a lot of satin funeral goods, it is possible to disappear in an instant, especially from the rainy area, this phenomenon is even more incredible, many metal products, in the tomb due to the mixture of water and air, has long been rusted with holes.

But just as this pendant was as free of rust as it was, the experts came to an astonishing conclusion after studying the Yue Wang Sword for a long time.

Two thousand years ago, the ancients had mastered some kind of rust prevention techniques that far exceeded modern technology, and it may even be the metal memory technology that modern scientists have been pursuing!

Coincidentally, the pendant in Qin Yu's hand was also unearthed in a tomb in Hubei Province, and the age is also Spring and Autumn!

What's the connection?

"System, is there really no way to trace the source of the pendant?" Qin Yu turned the interface and asked, "You tell me, is this thing a high-tech left by aliens, otherwise how can it not rust for two thousand years, and the material does not belong to the Spring and Autumn Period?"

The system never responded, Qin Yu didn't speak, and the two sides were in a stalemate for more than ten minutes.

"Hey, your integration with the system is too low to explain to you. In this world, there are always things that cannot be answered, at least not yet. ”

"When will it be?" Qin Yu asked.

"I don't know. The system seemed to hesitate for a moment before saying, "But what I can tell you is that this is definitely something on Earth, not some alien technology, and you have watched too many science fiction movies." ”

"Okay. Qin Yu sighed, knowing that he couldn't ask anything, so he still found a safe place to put the pendant away first, thinking about it left and right, he felt that it was not appropriate to put it anywhere: "Or I can also learn from Wenxuan and hang it up." ”

Qin Yu used to buy a tiger tooth as a decoration when he was in the Panjiayuan market, but later because of the inconvenience of work, coupled with the relatively tight domestic inspection of wildlife products, he did not bring it again, and the black lanyard on it was just used to tie the pendant, and it was quite retro and fashionable.

"Isn't it ugly, right?" Qin Yu looked in the mirror and asked for the system's opinion.

"Anyway, this system has reservations about your aesthetic taste. "The system didn't say it looked good, and it didn't say it didn't look good.

"That's good. Qin Yu smiled, he now has an understanding of the way the system speaks, since it didn't say anything sarcastic, that is the meaning of affirmation, he said proudly: "I also think it's good." It's just how it feels ... Head, a little dizzy,, why do I have a nosebleed... ”

"Qin Yu, Qin Yu, hold on... Before Qin Yu fainted, the last thing he heard was the call of the system as if it came from the sky.

In the haze, he felt like his head was about to explode, as if two forces had used his body as a battlefield, frantically vying for control.

Qin Yu wanted to shout, but he couldn't make a sound, he wanted to move, but he couldn't even control his fingers... This is the first time that such a situation has occurred since he had the system, and he can't help but be terrified, but there is nothing he can do!

The sudden heat and cold of the body, the sharp pain that kept attacking, made him miserable, I don't know how long it took, it gradually subsided, slowly returned to calm, and only the sound of breathing was left in the room.

Laboriously opening his eyes, Qin Yu wiped the blood on his face, and said to himself weakly: ", I'm scared to death, what's the situation... System, what happened to me just now?"

No response.

"System?" After waiting for a few minutes and not seeing the system make a sound, Qin Yu couldn't lie down, struggled to get up, and tried to wake up the interface, but there was no response either.

This time, he really panicked.

It's not that if he loses the system, he won't be able to live in the future, it's just that getting along with the system day and night in the past few months has long become a habit, as if he doesn't fight every day, he will feel uncomfortable.

"System, don't scare me, what's wrong with you. For dozens of minutes, Qin Yu kept talking to the system, trying to wake it up. Suddenly, he thought of something, grabbed the pendant around his neck, and said in shock: "Could it be the reason for this thing?"

"It's just a little rejection, it's fine. The system finally replied to Qin Yu, and at the same time, the interface popped up.

The things in this interface seem to be a little different from before, but what is the difference, Qin Yu can't say for a while: "Just now... ”

"In this world, not everything can be seamlessly connected when it is together, just like magnets at the same pole, always repelling each other. The system explained: "But it's not a bad thing, the omnipotent system has been solved, and it has nothing to do with this pendant, you can wear it with confidence." ”

Qin Yu always felt that something was strange, and his mind turned to the interface, and when he selected the pendant again, a strange scene happened.

Ji Bu's jade pendant and the city brick with Zhu Yuanzhang's own inscription were supposed to lie quietly in the inventory as usual, but at this time, there was a faint flickering dim light!

Qin Yu was very curious, and his intuition told him that there must be some kind of connection between these three time and space. Compared with the two, of course, he chose to cross into Xiang Yu's space without hesitation, intending to find out!