"Turn on the visual recording."

Ian doesn't play anything, and now is not the time to be shocked and emotional, he directly asks the chip to record all the murals he sees with his eyes on video!

The murals are simple, but they are very clear and charming, and it is clear that the painters are professionals who have studied the subject.

Ian held his breath and carefully observed the scenes in the mural.

The fresco in front has been damaged, and can only be seen from the Broken Moon.

After the fragments of the moon fell to the earth, the living beings on the earth were surrounded by flames, the towering cities and buildings collapsed in the meteorite rain, and the flying vehicles and airships fell in black smoke - it was not caused by meteorites, but a large-scale mechanical failure, a strong electromagnetic shock or a change in the psionic field swept the entire city, and the residents of the streets in robes and various costumes scattered in panic.

Their appearance and characteristics are not the same, Ian has found common human races such as humans, elves and dwarves, and there are many subhumans with various beast ears and animal characteristics, and sea descendants have also appeared.

And if you look closely, you can also distinguish the difference between the people of white, the people of iron, the people of red, and the people of gold from the pigments that have not yet faded.

It seems that in the pre-era, many races have appeared, but there is no difference between the races, and some people still have cyber modified parts, they walk on the streets as equals, but suddenly encounter a devastating disaster.

The impact of the meteorite was only a prelude, and as the moon shattered, the earth was no longer bright, and everything on the mural turned black and white, which Ian speculated might be an artistic representation of the temporary unusability of all electronic instruments.

Then, the scene returns to the coast, where a towering tower is crumbling and overturning.

Something even more terrifying seems to be happening in the ocean...... Although there are no depictions of meteorite falls, huge tsunamis, earthquakes, and geological changes are taking place, and it is these natural disasters that have destroyed all coastal cities, and the Tower of Babel has not been spared, and it has sunk into the sea along with the prosperous cities.

However, deep underground, a base originally designed to protect against natural and man-made disasters is still functioning.

That's the Sequoia base.

The people in the Sequoia base seem to be arguing, because the crust and the sea are obscuring, the electromagnetic waves or other psionic field effects that seem to interfere with the entire Terra world have not interfered with them, and there are colors inside the base.

But they still fell into a panic, and a group of people were beating each other around a glowing thing and a civil war, and many people died inside the base until the four leaders stepped forward and came to an agreement.

They created four keys, representing 'energy', 'sustainment', 'circulation', and 'future', locking down many dangerously damaged areas of the base and transforming the interior of the base.

Only a gathering of four keys can unlock the sealed danger areas, as well as the gates of the base.

The natural disasters outside are still going on, but the inside of the Sequoia base has stabilized, and the four leaders have joined forces to govern it, and they have successfully built an internal cycle inside the base, borrowing the ubiquitous light to farm, raise meat and livestock, and maintain a sufficient number of people.

Time flies, and the leaders who were already old before the moon was broken have passed away, and the other leaders who have succeeded have also been very good, leading the Sequoia base personnel to continue to maintain the ecosystem and repair many facilities within the base.

This section of the mural passes quickly, and just a few paintings tell the story of several generations of leaders, and it is obvious that the painter is not very clear about this history, or he does not feel the need to tell it in detail - in short, there are several generations of leaders, and the interior of the Sequoia Base has always remained stable.

However, time is always the biggest killer.

It didn't take long for Ian to understand why the mural was designed to depict this period of leadership change.

Because, after a certain water purification irrigation facility was destroyed by meat animals, the leader who was dressed in 'green' clothes and represented the 'circulation' showed no worries, and everyone else was silent.

Obviously.

They have forgotten how to repair this facility.

Maybe it's not forgetting.

Ian stared at the mural in silence, well aware that in a highly differentiated modern society, many functions are replaced by highly specialized maintenance machinery or specialized maintenance by specialized workers, and that a mechanical engineer may only be familiar with machinery in his domain, and that a maintenance worker may not be able to master the skills of repairing all siege equipment.

With the exception of spaceships and space exploration systems, which require as few people as possible, there is little need for professionals to master multiple skills.

The larger the civilization and the more sophisticated the department, the stricter the division of its staff, and the more the need for more people to maintain the 'knowledge' necessary for its existence.

To put it simply, although everyone knows basic mathematics or advanced mathematics, few people know what they are studying on a daily basis, except for mathematicians who specialize in mathematics.

The same goes for the rest of the technology.

After the natural disaster, the Sequoia base chose to self-enclose the underground to avoid natural disasters and isolate itself from the world, and they established a complete ecological system, using the energy of the base to breed animals and cultivate food, which solved the problem of survival.

But when all of the first-generation Sequoia base workers grow old, or even die, the loss of technology is inevitable.

Their children are not well equipped to receive the same level of higher education as they do, and even if they have mastered a lot of skills, they will never be able to draw inferences from everything.

Not to mention, there may not be any professionals in this group who can repair water purification facilities.

According to Ian's own personal experience, this kind of thing is usually outsourced - cheap, efficient and professional, and it really has to be staffed.

So, the recession began.

In addition to the water purification recycling equipment, many other equipment began to have problems.

Of course, there are only a few who can't be repaired, most of the key facilities are the focus of the focus, those first-generation Sequoia base people have long expected this problem, their descendants can't compare with their most elite parents, but the level is actually not too far behind, in the pre-era civilization can be regarded as intellectuals who have completed higher education.

But what about the children of their children?

In this way, within three generations, the Redwoods will go from being a remnant of the previous era to a complete technological barbarian - they have mastered some high-end technology, but they are unable to further analyze and develop it.

To change this, the blue and white people, who represent future and sustained leaders, have thought of many solutions.

- For example, the use of huge machines to make people learn knowledge.

- Or artificially cultivate an external memory organ, record the key knowledge in it, and transplant it from generation to generation to pass on the memory and technology.

- Another example is to directly engrave knowledge in the bloodline, and as they grow up, human beings can gradually understand the knowledge in their own bloodline.

These are all methods that have long been developed by pre-era civilizations and already have considerable proficiency.

In the end, because the giant learning machine was too extravagant and easily damaged, and could not make some of the key components, they chose to modify their bloodline, as well as an external memory organ, as a way to help the future Redwoods maintain their technological standards.

They put newborns, even fertilized eggs, in jars that resemble culture chambers, and then concoct them, writing a lot of knowledge into instinct...... The Sequoia base contains a large amount of genetically engineered equipment, which is consistent with many of the alien biospheres that Ian has seen.

Bloodline inheritance is not difficult for them.

- By now, Ian pretty much understands where the redwood natives come from.

The Sequoia natives are undoubtedly the descendants of the Sequoia Base staff!

It is no wonder that most of the redwood natives are Jin Zhimin, because among the former staff, Jin Zhimin, who is the most adaptable to the environment, has the greatest genetic advantage, and most of the newborns born after intermarriage are Jin Zhimin...... The other races are not adapting, so they suppress their dominant genes to ensure that the race can be sustained.

But here's the problem......

The Sequoia base, or the South China Sea relics, has abundant energy, a lot of resources, and a complete ecosystem - living in it is definitely more comfortable than going to the outside world.

At the very least, the indigenous ancestors who lived in the base had never been worried about food, and they had not 'adapted' to that dwarf appearance because of the lack of nutrition.

"Why are they going out? Renunciating membership as a member of the base to become an 'indigenous'? ”

With this in mind, Ian gradually looked behind the mural.