Under the leadership of Carol, Mu Chen and the others soon arrived at the museum located in the center of the Holy Water City.

The museum is very large, and scratches left by the Zerg can still be seen on the exterior wall, and the building intelligent robot is working hard to repair these traces.

The interior is very spacious, and some Proxima Centauri scholars are studying the writing on the walls, but most of the sculptures and murals here are completely destroyed, except for a large black stone tablet in the center.

The black stele exuded a metallic luster, and Mu Chen could tell at a glance that it was a complete obsidian cut.

Obsidian is a very rare ore in the universe, with a very high density, a fist-sized piece can weigh hundreds of kilograms, and the 20-meter-high obsidian stele in front of it has tens of thousands of tons.

The stele is densely carved with Proxima Centauri's unique characters, and the carving technique is very peculiar, and after the marks are carved, the marks are filled with a special white powder, which looks like white characters left on black paper.

"This is the chronicle of Proxima Centauri, a record of the major events that have happened to our race over the years, I thought it would be destroyed in the insect plague, but I didn't expect it to be preserved." Carol said with emotion.

Obsidian is extremely hard and highly resistant to corrosion, so it is natural that it has not been corroded by the mucus secreted by the mother.

The text on it is still visible, and several carvers are busy recording the recent events of Proxima Centauri.

The high-temperature, high-pressure thermal carving knife cut the stele into sparks, but it still took a long time to leave a mark.

The stele is rectangular in shape, slightly wider at the bottom and narrower at the top, giving it a sense of history.

"When you say something important to me, do you mean this stone tablet?" Mu Chen asked curiously.

After seeing the endless scrolls of the elemental people, this stone tablet is somewhat insignificant, not to mention that it is not convenient at all, isn't it good to use a light brain to record, and you have to use this thankless method?

Carol nodded, pointed to a string of words on the stone tablet and said, "We also just discovered, the ancestors of the Proxima Centauri seem to have encountered the Wall of Sighs, and left some records. ”

Mu Chen's interest was finally raised, the wall of sighs? He had been looking for this thing for a long time, but there was still no clue, and he didn't expect that there was a record of it in the Proxima Centauri Museum.

According to Atren the Wise of Tia, the Wall of Sighs is one of the four great artifacts handed down from the ancient times of the galaxy, possessing extremely powerful defenses that can wrap up a third of the galaxy, as long as the energy is sufficient, almost

It is impossible to be breached.

Mu Chen has been trying his best to find this artifact, but unfortunately his luck is not good, and even the lucky compass has not been able to point out its location.

Although the Earth Federation has recently reproduced the Gaian shield-type magic array, it takes a long time to build this magic array, and the requirements for accuracy are also very high, and it may be okay to protect the solar system, but whether it is time or resources, it is impossible to make such a magic array on all planets in the entire galaxy in a year.

Moreover, Mu Chen always had a skeptical attitude towards the ability of the magic array, after all, Bi Mercury was attacked by the ghost clan right under his nose, and the facts proved that the magic shield was not indestructible.

Although Mu Chen had never seen the Wall of Sighs, and everything he knew was hearsay, the coverage area and defense of this artifact were very strong, and it was worth trying for him.

Think about it, if you can find it and use it to build a line of defense, then a large area centered on the solar system can be completely protected, and even interstellar trade activities can continue to go smoothly.

"Are you sure?" Mu Chen asked with a little excitement, this matter is not trivial, and he can't help but take it seriously.

"Of course." Carol pointed to a string of words on the stone tablet and said, "About 1700 years ago, our parents accidentally crashed into a space barrier during an interstellar trip, and the space seemed to be blocked, and the spaceship could not enter at all, and even the attack of weapons would be completely blocked outside......

"Lord Death, this is not enough to prove that it is the Wall of Sighs, after all, there are many similar areas in space, and it may also be ......caused by the repulsion of the strong magnetic field," the Chief of Staff reminded in a loud voice.

Mu Chen nodded: "I know, but even if there is only a one percent chance, we can't miss it, the Wall of Sighs is too important, if it can be found and successfully replicated, then the galaxy is very likely to completely block the ghost race from the outside, so that we have a lot of time to study how to destroy the ghost race." ”

Time is the most urgent thing for the inhabitants of the galaxy, and it is really difficult for some strong people to find a way to eliminate the ghost race within a year, even if the researchers of the scientific research institute are talented and work day and night, it is difficult to complete this difficult task.

Although Alice told Mu Chen that they already had some ideas, but the ideas and the finished product are not the same thing, turning the ideas into reality, it takes countless repeated attempts and explorations, Mu Chen can't help too much in scientific research, so the only way to buy them more time is to find a way.

And the Wall of Sighs was made by the dwarves in ancient times, which means that it is possible to be copied, that is, the scientific research value on this artifact is also very high, once conquered

The reference value of the difficult problems for scientific researchers will be extremely huge.

"Actually, there is no need to worry too much, according to the news left by my father, this wall of sighs may not be far from us, although the galaxy is always changing, but 1700 years is not enough to produce the effect of vicissitudes, as long as you follow the coordinates to find it, I believe it will not delay much time." Carol said with a smile.

It turns out that the stele not only recorded the abnormal situation, but also left a relatively accurate coordinates, presumably hoping that future generations will be able to crack this secret.

This can save Mu Chen a big thing, Carol is right, what is it, don't you know if you go over and see it?

"Very well, let's go at once." Mu Chen said excitedly.

He's not a procrastinator, not to mention that the galaxy is in a race against time, so there's no room for delay.

But at this moment, Carol said loudly: "Mr. Mu Chen, I have a request, I hope you can understand......

Mu Chen frowned, what kind of moth is this woman doing, taking advantage of the fire to rob?

Carol was a little embarrassed, but it was in the interest of all Proxima Centauri, and she had to do it for the sake of her own people and the future of the Centauri system.

"Say it." Mu Chen said lightly.

"Mr. Muchen, if it turns out to be the Wall of Sighs, I hope that it will be jointly owned by Proxima Centauri and Earthlings, and that they will conduct targeted research together......" Carol said with some trepidation.

Earthlings have always been quite generous to Proxima Centauri, and without Mu Chen's help, Proxima Centauri would have been almost impossible to reclaim their home planet from the Zerg.

And the destruction of Proxima Centauri's core was due to the Earth Federation's all-out efforts to overcome difficulties and find ways to develop an artificial star core, which saved this habitable planet.

And although Carol's request is not excessive, it still has a taste of revenge, which makes people very uncomfortable to hear.

Mu Chen thought for a while expressionlessly, this time of thinking was not long, but it made Carol sweat profusely, like sitting on pins and needles.

She was afraid that her proposal would anger Mu Chen, if this was the case, Proxima Centauri would probably completely offend the Earth Federation, Carol knew very well what Mu Chen's status was in the hearts of earthlings, and his attitude almost represented the attitude of all earthlings.

If Mu Chen thinks that Proxima Centauri is an insatiable white-eyed wolf, then it is almost the end of Proxima Centauri, without the help and support of the Earth Federation, the Centauri galaxy will not be able to withstand the invasion of the ghost race, and it is only a matter of time before it perishes.