Li Qingsong was a little surprised to hear this answer. "What means of observation do you Bluetuk civilization use?" Momolans said weakly: “Planetary atmosphere spectrometry technology. We built a massive array of space telescopes to observe the planets in this system, and we found that the third planet is in the habitable zone, with temperatures high enough to support liquid water. We determined the elemental composition of the planet's atmosphere and confirmed the existence of life on the planet. We also determined whether the atmosphere contained industrial markers and the change curve of carbon dioxide concentration, confirming that there was no intelligent life on the planet, so we chose it as the migration target..." Li Qingsong knew that the so-called industrial markers were a kind of gas that could not be formed naturally and could only be produced through the industrial processes of intelligent life. Just like the commonly used refrigerator and air-conditioning coolant, Freon is a typical industrial marker. After this substance is emitted into the atmosphere, when the planet is located between a distant observer and the sun, this substance in the planet's atmosphere will cause corresponding changes in sunlight. Distant observers can determine whether the atmosphere of a distant planet contains industrial markers by observing whether there are such changes in sunlight. If there are industrial markers, it would obviously prove that there is an intelligent civilization on this planet, and that it has developed to a certain level, or at least has entered the industrial age.
But... this alien said there are no industrial signs in the Earth's atmosphere? How is this possible? Human civilization has developed to a level within the solar system that is capable of building deep space spacecraft, yet you say there are no industrial markers in the Earth's atmosphere? "Still lying." Li Qingsong sneered and once again controlled the clone to lift the electric shock device over. Momorans screamed in horror: "I have already answered your question! Why do you still want to torture me! Ah——" While torturing him, he used the Bluetook’s life support methods to prevent him from dying. At the same time, Li Qingsong did not stop interrogating the remaining Bluetuk people. “Why did you choose the solar system as your migration target?” “…We found a habitable planet here, but there were no industrial markers, which meant there was no intelligent civilization at a higher level, so we came here. If there are industrial markers, we would not dare to come, after all, we have no way to determine the level of technology corresponding to such industrial markers..." "You lied, and you will be punished!" “Why did you choose the solar system as your migration target?” "...there are no industrial markers..." "Punishment!" "Punishment!" "Punishment!" When the 366th Bluetook screamed in agony from the electric shock but still gave the answer "no industrial markers", Li Qingsong felt a little more confused. Not only was this the case in the interrogation testimony, but he also found a similar description in the mother ship's database.
The captives seemed to really think so. At this moment, even Li Qingsong couldn't help but feel a little surprised. "Is it true that there are no industrial markers in the Earth's atmosphere? No, it's impossible, it's impossible. Industrial symbols can remain in the atmosphere for a long time even if all human civilization disappears. The maximum speed of the Bluetuk main fleet is only 3% of the speed of light. Taking into account acceleration, deceleration and inertial navigation, it will take at least 900 years to complete. At this point, their voyage has been going on for about 500 years. 500 years, plus the preparation time, they started observing at least 700 years ago! At that time, the Earth was already in the late feudal era, and early activities such as iron smelting, textiles, dyeing, gunpowder, and agriculture had been carried out on a large scale. There would also be corresponding industrial markers in the atmosphere! There's no way they can't see it! The Earth must have industrial landmarks, and these captives are telling the truth, so there is only one possibility... These captives have been deceived! For some reason, the leaders of the Bluetuk civilization deceived them!" Li Qingsong's mind raced and he asked another question. "I found from your database that the environmental exploration mission carried out by your advance fleet is mainly resource exploration. Your exploration plan shows that you do not seem to intend to survive in the solar system for a long time. Instead, after some predatory and destructive exploitation, you will set out again to sail away in no more than a few thousand years. You said before that there are planets in this solar system that are more suitable for you to survive, so why do you want to leave here?" A trace of confusion flashed across Momolans' eyes. "Are these included in our exploration plan? I only know that we are going to conduct environmental and resource exploration, and I don't know the rest." After analysis, Li Qingsong believed that what he said was true. Only people like me who can mobilize a lot of brainpower, analyze the overall situation and pay enough attention can vaguely perceive the "malice" hidden under the surface detection plan. It's normal that Momolans doesn't know. Li Qingsong then asked another question. "Why do you want to leave your home system and migrate into space?" "The commander said that the 'natural disaster' is coming. If we don't escape quickly, the entire civilization will be destroyed." "Natural disaster? What natural disaster? According to my observations, the main star of the Gliese 625 galaxy, which is also your home galaxy, is a red dwarf star that burns steadily. There is no possibility of drastic changes in the short term. With your level of technology, you can handle planetary disasters. What kind of natural disaster would make you abandon your homeland?" Momolans's eyes flashed with confusion again: "I don't know." "you do not know?" "Yes, I don't know. I only know that the natural disaster is coming and we must escape. That's what the commanders said, so the entire civilization took action. They started preparing hundreds of years ago, and then set off..." "You believe whatever the commander says?" "Of course."
Momolans showed awe on his face: "Following the footsteps of the commanders until death is the key to the continuation of our civilization. Whether you understand it or not, you should not disobey the commanders' orders." Li Qingsong smelled a strong scent of conspiracy. The inexplicable disappearance of human civilization, the blueprint of the Turk civilization to start the migration of all civilizations without obvious disasters, the lower and middle class people who were deceived into believing that there was no intelligent civilization, the migration plan that was openly called migration, but was actually a migration plan that sailed away again after predatory exploitation... The disappearance of human civilization is definitely related to the Bluetook civilization! Even if the Bluetuk civilization was not the mastermind, it was definitely involved in it! "In about 400 years, your main fleet will arrive..." Li Qingsong raised his head and looked in the direction of Gliese 625.