The space on the third floor is not very large, there is a huge workbench in the middle, and there are all kinds of mechanical equipment around and even on the table, such as ultrasonic cleaning machine, high and low temperature damp heat test chamber, ultra-depth three-dimensional video microscope system, cultural relics quantum restoration instrument, multi-functional laser drilling machine, etc., it can be said that all cultural relics exploration and restoration equipment are available here.

The strange thing is that the third floor of the space is terrifyingly quiet, compared to the ** traffic on the first floor, there is no one here, except for various tools, it is a large number of unearthed cultural relics.

"Professor, this is the bronze sacred tree unearthed from the Sanxingdui site!"

As soon as he entered the door, Yuan Ao saw the bronze divine tree standing more than three meters high on the workbench, surrounded by a total of twelve beams of light from top to bottom, and there was a display screen next to each light source to display the analysis data.

After observing the laboratory for a long time, I found that the professor still had no response, and when I looked back, I found that the professor was lying in front of the computer studying the data.

Yuan Ao didn't bother him anymore, picked up a small object and played with it repeatedly.

This is a palm-sized six-pointed star, I can't see the material, it looks like jade and not jade, Yuan Ao weighed it with his hand and found that it was quite heavy, the pattern on the back was carved very finely, it seemed to be a star map, countless stars converged into a nebula around the middle ** into a rotation, each star is different, but it is clearly recognizable.

"Be careful with that key, you won't need to scratch it a little," the professor walked over to Yuan Ao and took the six-pointed star in his hand after reading the data.

"You say this is a key?" Yuan Ao couldn't connect this thing with a key, "Why doesn't it look like a key at all?"

"There are no rules for the key, as long as you can open the lock, you have a good key," the professor said angrily, he found a box and put the six-pointed star in the cabinet next to him, "I have to make a rule with you when I enter this laboratory, it doesn't matter if anything else, just don't destroy anything, this is a real prehistoric artifact." I'm usually used to being alone, and everything is left at hand, but if there is a little damage to these things, it is a loss of civilization. ”

Yuan Ao nodded to show that he understood, if it wasn't for deliberate destruction, with his skills, he could pick it up even if something was about to fall to the ground.

However, both of them ignored Xiao Jin's existence, and since they entered this laboratory, they jumped off Yuan Ao with bright eyes and scurried around, and if the small body was not specially found, it would be really difficult to find.

"Professor, are the prehistoric civilizations you are talking about the previous solar civilizations? Could it be that these things are relics of the previous civilizations?" Yuan Ao asked, pointing to the things that filled the cabinets, although this laboratory is not big, there are still a lot of ornaments like the six-pointed star.

"That's right, to be specific, these are the things of the Second Solar Age, you see this mask, as well as the scepter, what looks like a sacrificial object, but in fact, they are all things that are used in space," the professor pointed out to Yuan Ao the things in the laboratory like a treasure.

"Could it be that the direction of your research is the Second Solar Period?"

"Not really, but commissioned by the Alliance, I've been studying the civilization of the Second Solar Age for more than a decade. ”

Yuan Ao was a little confused, isn't the UN General Assembly independent? How could he still accept any commission from the alliance?

As if seeing Yuan Ao's puzzlement, the professor continued, "After all, we are part of the alliance, and if the alliance is in need and we are interested, we will still cooperate." Several major families of the alliance will actually entrust the United Nations General Assembly to help them study things through the alliance, such as the civilization of the Second Solar Age, which is actually the commission of the Ji family, the great ruling of the alliance. At that time, I happened to complete a project, and I took it because it was quite interesting, but I didn't expect this research to be more than ten years. ”

There are still these Dao Dao Dao, and sure enough, none of them exist independently, and they all seem to be somewhat implicated. However, the professor is really persistent, and a topic will be studied for more than ten years.

"Professor, you haven't told me about the civilization of the Fourth Solar Age, since the Sea Clan and the Sand Clan are both inherited from this civilization, does that mean that human beings know the most about this civilization?" Yuan Ao suddenly remembered the four prehistoric civilizations, and the Fourth Solar Age civilization had not been talked about.

"Wrong, on the contrary, in fact, we know the least about the civilization of this solar age," as soon as he mentioned this, the professor was full of fire, "Because there were not many survivors of the civilizations of the previous solar age, what human beings found can be well studied and inherited, and a lot of history and technology have been deeply understood." Only this civilization of the Fourth Solar Age, the Sea Clan does not share with us at all, and even if a new ruin is discovered, they will take over immediately. ”

"Then don't we know anything about the civilization of this solar age?"

"Almost, except for knowing that the Sea Clan is brilliant in the use of energy, I really don't know much about anything else," the professor said helplessly, the Sea Clan does help humans a lot, but they are too self-cherished.

"By the way, take out that short gun of yours and let me see," the professor suddenly mentioned Yuan Ao's short gun.

After taking the short gun, the professor carefully placed it on an instrument, and after turning it on, several rays of light were shot out from it and gathered on the short gun, and the light refracted was brilliant and dazzling, which was very beautiful.

Soon, a series of data jumped out on the instrument, and after reading it, the professor clicked a few times on the workbench, only to see a small grid rising from the plane, and the professor put the things in the small grid and the short gun on the platform in front of Yuan Ao.

"See what the difference is. ”

The professor took out a small black cylinder that looked like a human little finger bone, Yuan Ao took both things in his hand, and carefully weighed them for a long time before he felt that the small cylinder was almost exactly the same as the short gun except for the color, whether it was the material weight or the feel.

"Professor, what the hell is this? Why is it so similar to a short spear?" Yuan Ao asked in a deep voice after putting the small cylinder back on the table, he had seen something so similar to the material of the short gun in so many years.

"I call this thing bone gold, like bone and can be fused with metal, it is a very magical material," the professor said, picking up the small cylinder on the table and checking it, "This is the only thing that has survived so far, except for the short gun in your hand." ”

"Actually, I felt a little familiar when I saw your short gun at first sight, but after all, I haven't done testing, and there are many similarities in unknown materials found after the big destruction, so I didn't mention it to Yi Lao. ”

The professor put the small cylinder on the instrument, tested it like the little sword just now, pointed to the data on the screen and said to Yuan Ao, "You look at these two sets of data, your short spear can be said to be pure, and my piece of bone gold is not pure enough, so there are more components than yours for testing." However, the basic properties of their main components, such as density, transparency, hardness, and malleability, are exactly the same, and although they are unknown elements, we can already judge that they are the same material. ”

"Professor, you just said that these two things are unique in this world, so do you know the origin of this piece of bone gold?"

Seeing the professor's nod, Yuan Ao couldn't calm down anymore, for the first time, he felt for the first time that the secret of his life was so close that it was almost within reach, but now he didn't dare to ask any more. He just kept spinning around the workbench with his head down, and his mind was in a mess.

Looking at the young man who didn't ask any more, Professor Fang could understand his hesitation, but his answer might not be able to satisfy the poor child, but Yuan Ao's current state is estimated to be unable to listen to anything, so the professor can only sit aside and wait for him to slowly calm down.

"Professor, could you please tell me more about this bone gold!" Yuan Ao walked up to the professor and asked.

"This is a relic of the Second Sun Age civilization," the professor's first sentence made Yuan Ao's heart sink to the bottom, the Second Sun Age, how could it have anything to do with his own life experience.

The professor noticed the change in Yuan Ao's face, but he didn't stop, and then told Yuan Ao about the bone gold. Although this thing is not directly related to Yuan Ao's life experience, the short gun that Yuan Ao has been with him since he was a child, it must still be related.

Eighty years ago, the Ji family discovered the remains of a temple-like temple, and the two phalanges of a statue, Little Thumb, were found by the Ji family. Also found were the six-pointed star and an alloy plate of unknown metal more than two meters high, which was engraved with runes, but none of the archaeologists on the site knew this rune.

It was decades later, as more and more similar ruins were unearthed elsewhere, that the symbols were deciphered. It turned out that it was the text of the Second Solar Age civilization, and the alloy plate recorded the sacrifice of the original human beings to their god, and the statue was their god.

At first, no one thought that the bone gold like the little finger bone was of any use, but they were studied as a religious instrument, and the turn of events happened when the Ji family was refining the Xuanyuan Sword.

The Xuanyuan Sword, as the sword of the Yellow Emperor, has long disappeared in the long river of history, and the Ji family has always wanted to reforge the Xuanyuan Sword. Although the materials and methods of forging swords are in the ancestral literature, the swords made each time are not as mysterious as the legend, so the Ji family pays special attention to the newly discovered materials, and wants to add them whenever there are more magical materials found.

When the research value of bone gold was denied, its value as a material began to attract the attention of the Ji family, and bone gold was stronger than all the materials found so far in terms of melting point, hardness, flexibility or fatigue resistance.

One year, when forging the Xuanyuan Sword, someone melted one of the bone gold at sub-absolute high temperature and injected it into the furnace of the sword, resulting in a real divine sword, which can be said to be even more wonderful than the Xuanyuan Sword described in ancient times.

Only then did the people of the Ji family notice the extraordinaryness of the bone gold, but they did not find the third bone gold in the remains of the Second Solar Period.

"Yuan Ao, try to be careful when you use this short gun in the future, this is a treasure that even the Ji family will covet," when he said this, the professor couldn't help but remind Yuan Ao.

Yuan Ao nodded but didn't speak, his life experience, a field that he had never touched in the previous fifteen years, made him so worried for the first time today.