"But now these are all gone, why?" Some collectors questioned this.

The family responded, "Because the planet's surface temperature dropped, they all turned into ice, plus the subsequent burial of sand, the ice also sank to the ground."

"It may be due to the lack of mass of this planet. A small mass means that the core temperature cools faster. Once the core of the planet is completely cooled, the planet’s magnetic field cannot be maintained. A blue dwarf star that is many times stronger than a normal star When the wind blows, the atmosphere of the original planet is naturally thinned."

"Then the subsequent interstellar dust falls on the original ice layer, and there is now such a dusty surface environment."

"Because it is such a dusty environment, whenever the planet reaches the perihelion, the dust particles floating in the atmosphere absorb more solar energy. This dust-filled air will be hotter than the surrounding atmosphere, so it rises rapidly. The vacant place is quickly filled by other air, and the sand storm is formed from this."

The reasons for the formation of the planet’s surface environment today are not complicated. The collectors of more complicated environments have seen it, especially the environment of gaseous planets, which is harsh and chaotic, and the environment is full of air currents. It is really true to find traces. Too difficult, compared to today's traceable environment like an earth-like planet, it couldn't be better.

"In an environment like this, even if the civilization we are looking for has left behind any building complex, I am afraid it will be completely deserted in five thousand years and become a part of the dust in the sky."

Some individuals are very worried. This worry comes from the possibility that ‘the cluster will get nothing from this action.’

"It may also be buried by the wind and sand. In short, I still have to look for it." The optimistic collector comforted his worried family.

As long as the man-made building can be buried by wind and sand before it is completely eroded, the possibility of being completely deserted will be very small. The sand dust of the buried building will play a good role in preventing wind and drift, which is equivalent to a protective layer for a relic , Which is why things like ruins and fossils often need to be excavated from the ground, because they cannot withstand the baptism of years on the ground.

With a global rhizome network, it is very easy to search for underground monuments. Collectors only need to hit the rhizome and search straight down.

In just a few days, a piece of life field information spread all over the planet and was learned by all collectors on the planet.

"A discovery! It is a man-made building complex!"

The found building is 3,000 kilometers from the ground and is deeply buried. The building is a composite building constructed of ceramic tiles, sand and metal strips. The surface has been severely eroded, pits and pits, inlaid with a lot of fine sand particles. .

"There is sand everywhere in it, which is not easy to explore."

The collectors who saw these knew that they had encountered a problem. The building was buried deeply, which meant a lot of pressure. It was also an old antique that had been sanded through the baptism of years. If they rashly contacted it, it might cause the building to collapse. Damaged.

Therefore, there are individual proposals.

"I propose to solidify the surrounding sand first, and then clean the sand inside the building to solidify the building itself."

"Agree."

According to the proposal, the rhizome secretes a kind of colloid, which sticks to the sand around the building, turning it into a hard protective layer wrapped around the building. It looks a bit like an egg, because this appearance structure makes it easier to disperse the pressure. .

Subsequently, the collectors began to drive their rhizomes, while cleaning the sand in the building, while curing the building itself, so that when it comes in contact with the air, it will not be damaged due to this.

The efficiency of a large number of individuals working together is amazing. It didn't take long for the collectors to complete the solidification of the building and the exploration in general.

By constructing a physical model, collectors can intuitively see the remains of their survey in the channel. To read

"The structure of this place... well, it's probably a fortress."

When each type of building is designed, it will inevitably deviate due to its use. For example, the housing of ordinary residents must be different from military fortresses. Housing considers people and fortresses are more concerned with resistance to attack.

Perhaps it is precisely because this complex is a fortress that it has survived the baptism of the years, until now the collectors unearth it.

"I think so too. Many places have anti-shock and anti-shock designs. The framework of the building complex is also multi-stage in parallel, which is obviously to improve the design idea of ​​external damage."

Some individuals agreed with the collector's thinking and agreed that this site is a fortress, otherwise there is no way to explain such a structural design.

The external exploration has basically been completed, and the collectors have launched an in-depth internal exploration of the ruins. After reaching a certain distance, some biological fossils began to appear.

"It's the bones, it should be the occupant and builder of this complex."

The collector is convinced of his judgment, because after searching for a circle, there is only this kind of fossils in the building, and there are no fossils of other species, which means that the owners of these biological fossils should have lived in this fortress. It is also the intelligent species that built this fortress.

Of course, there are other speculations. For example, these bones are invaders, and the builders of the fortress completely wiped out these invaders after confronting them, and then collectively evacuated for some reason.

However, among all speculations, the collectors are still more inclined to the first, that is, the owners of these fossils are the builders and residents of the fortress.

"This is the first time I have seen this kind of creature with a brain growing in the body. There is no biological structure of a head."

The limbs are all similar. There is no neck. From the perspective of bone structure, the neck should be a mouth, and the brain is inside the body. Then based on the position of the brain, the eyes have to be connected to the back.

But what makes the collectors more weird and curious is how does this species realize its vision based on the idea of ​​eye design?

Regarding this issue, because it is not the main issue, they decided to discuss it for the time being, and first survey the death scenes of these intelligent species to find the cause of their death.

"What is the cause of their death?" someone asked.

"Let me take a look, um... Judging from the various traces observed on the spot, it should be due to suffocation or penetrating rays, or viruses or poisonous gas."

Because there are no scars on the bones ~lightnovelpub.net~ that is to say, unnatural death can only be killed in a way that does little damage to the body, so these assumptions are made.

However, individuals soon raised objections, the reason being that something was found around and in some of the bones of the objector.

"No, they died of some kind of weapon, don't look at their bones intact, but that was because the attack they encountered was so weak that it just killed them."

The weapon is a kind of steel needle, about five centimeters long, and exists around and inside the bones. Some steel needles are inside the walls of the fortress.

"Steel needle..."

"Relying on this kind of steel needle to pierce the brain to achieve the purpose of killing, this is the first time I have seen this weapon."

This is a massacre, targeting all the intelligent species in a fortress. Their enemy is a powerful trained special warrior. They possess a weapon that can fire steel needles, which can kill the intelligent species in the fortress with one strike. .

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