Roots spread in the form of a network under the planet. Observation and exploration on the surface is secondary. Expansion is the main one. Because the two complement each other. Expansion can make the search work twice as effective, and the acquisition of material resources is also inseparable from the expansion of rhizomes. Collectors need Give birth to a secret to calculate and decipher the language of the planet’s natives.

Precisely because of the main reason for expansion, the collectors later realized that they had already covered the underground, more than 40 kilometers away from the Suncheon Sect, and made some new discoveries.

"Found an unnatural building."

"There is a civilization of cold weapons on the planet. Although industrial technology is not good, it has the ability to build buildings. Unnatural buildings are very common."

"Uh... the information is short. The technical level of this unnatural building is obviously not built by indigenous civilizations on the surface. They don't have such materials science yet. Incidentally, they have measured the atomic half-life of the lower outer wall. The building has existed for five thousand years."

Individuals who responded in this way repeated detailed explanations and delivered their own visual information.

In the visual information, the outline of a building can be vaguely seen on the vertical rock wall. This outline is only half, and the other half is buried in the rock layer of the rock wall. No atomic half-life detection is required. Bystanders can see it at a glance. It can be seen that this building is very old.

There are many red and yellow strips on this outline, and the front door of the building is even more plastered with such things.

These strips are similar to paper. The red part is the paper, and the yellow part is the text on it. To the observer, it feels like immersing the paper in red dye and writing text on it with gold ink.

The strips are very eye-catching, and the entire building exposed outside the rock wall is covered with such things. It is difficult not to notice it. The collectors naturally shift their attention to it.

"Why is there something stuck on the door of this building?"

"I know this thing is also found on the Celine's side. It seems to be called a'seal.' You see, usually some words are written on the seal, and there is also on it."

Someone soon showed their understanding of these strips, and the reason was still very good.

Other individual collectors recalled in the genetic memory of the ethnic group to understand the concept of seals in the Serinian civilization.

"Oh I got it."

"Long knowledge."

Of course, there are also some individuals who think it is useless information, so they don't recall, and directly ask their family members, only to understand the general concept.

"What is the purpose of the seal?" the subject asked.

The individual who had put forward the idea before replied, “On the side of the Serines, it is usually posted on the building that is about to be demolished. Since the building is about to be demolished, it is dangerous, so a seal should be affixed to serve as a reminder and warning.”

"So this building will also be demolished? The local natives will demolish this building."

"But of these seals, the one that has existed for the longest time seems to have been hundreds of years. The local indigenous planned to demolish this building for hundreds of years and haven't demolished it?"

Some individual collectors questioned that there are many suspected seals, some are very new, such as recently posted, some are very old, after the atomic half-life determination, the longest existence of the stick is about 400 years ago. Up. Fire out

This in itself is incredible, because in the atmospheric environment, it will be eroded by air currents. No matter how hard the rock is, it will be weathered. Even if a part of the building will provide some cover, it cannot be fully protected. It lasts for four hundred years. The fact that they have not fallen off or been completely corroded is enough to explain the abnormality of these suspected seals, and the material technology of the local civilization has not reached this level.

However, due to the preconceived relationship, the collectors paid more attention to the demolition of this building, and then the whole thing was biased.

"This kind of situation seems to happen on Celine's side, it's called'nail house'..."

"What is the nail house?"

"It means that some people are fixed in place like reinforcement parts called nails. The demolition of buildings on the side of the Celine is usually to tear down the old building and rebuild the new building in the original location. For this reason, they used to live there. The Celine people will relocate, but there will always be some Celine people who are unwilling to leave their place of residence for one reason or another. The Nailers are talking about these people."

"This shows that although this is the remains of the destroyed civilization, there are indigenous people living in it."

"Exploration still has to continue. Don't make a big noise when the roots are expanding. As long as you don't get caught, it's okay. If something goes wrong, we will erase the indigenous individuals to prevent our information from spreading and expanding influence."

"agree."

If there is a way to erase memory, collectors will be more inclined to use memory erasure to eliminate the impact. After all, indigenous people are scientific research resources that enlighten ideas. Although there are many indigenous people, collectors will not spare the resources of their own ethnic groups. many.

But unfortunately, the collectors have not yet carefully understood the brain structure of the natives of this planet. Before knowing which part of the native brains of the planet is the memory storage area, they can only use erasure processing.

I found an inconspicuous corner of the ruins, and the roots used chemical coordination to etch a channel for the roots to penetrate into the building.

The ruins are very dark, and it doesn't seem to be a sign of inhabitation, and they are searching all the way around the corner roots.

After searching for a long time, I didn’t find any clues about the ruined civilization, but found a trace of a suspected fight. These traces are relatively new to the building itself. It was left hundreds of years ago. The deeper the building, the more. Some dark areas will gradually appear on the inner walls. After extraction and analysis, these dark areas have the same composition as the blood of the local aborigines. Judging from the traces, they should be splashed on the wall.

"It's not like a place where people live, but it's like a battlefield."

"Attention, there is a sound."

After continuing for a certain distance, something can be heard faintly in the dark building passage.

"It seems that there are indigenous people living here~lightnovelpub.net~. Pay attention. Don't make a big noise to attract the attention of the indigenous people."

"To understanding."

If there is a sound, it means that there are indigenous people in the building. The traces are left hundreds of years ago. It does not mean that there are no indigenous people living in the building. Even if you can't see the five fingers in the building, the indigenous people who cannot observe objects through infrared waves like collectors can't see the building at all. Nothing inside can explain anything, and no one can guarantee that the occupant of this building is a quirky native.

The exploration of the roots continues. The collectors silently replace the roots with the same protective color as the wall, plus the slim volume. Even under visible spectrum lighting, they can’t be found unless you look closely.

"Huh? Strange, why doesn't it feel like the sound has increased?"

At first, the collectors didn't feel anything strange, but as they continued to deepen, they should have amplified the vague sound due to the closer distance from the speaker, but this is not the case. The sound did not increase and remained in a fuzzy state. It seems to keep a certain distance from the spreading roots of the gatherers.

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