Chapter 400: The Shelter (2)

The hum of the "buzzing ......" engine gradually disappeared, the hatch opened, and Cheng Mingli flexibly jumped out of the aircraft. Pen? Interesting? Pavilion wWw. ｂiquge。 Info exhaled softly, raised his hand to put the five-meter-sized aircraft in front of him into the folding space, and after carefully checking his equipment, Cheng Mingli raised his feet and walked towards the deep hole.

The space where the mural is located is at least five kilometers deep from the ground, and the previous probe has already marked the route of travel, and Cheng Mingli only needs to follow the marked route. But no one has gone down for more than 100,000 years, who knows what kind of environment it is inside, whether there is air or not? Is there some burrowing beast lurking in it?

These Cheng Mingli are not clear, therefore, the necessary protective measures are still necessary. In such a dark and deep underground space, the alloy battle armor provided Cheng Mingli with the necessary protection.

As you go down, the oxygen levels in the air gradually decrease, while the concentrations of carbon dioxide and sulphur dioxide increase. Not only that, but the external detector of the alloy armor showed that the further down the air was, the higher the humidity and the higher the temperature. By the time Cheng Mingli reached the edge of the fault zone, the temperature had reached more than 40 degrees Celsius, and the surrounding environment was like a big oven.

Pieces ......of rubble slipped off the edge of the fault zone and fell straight under the vertical rock face, until a faint and dull sound was heard from below.

"Whew! ......" After confirming that the small anti-gravity engine built into the back of the alloy armor was turned on, Cheng Mingli stretched out his head to look under the fracture zone, and then jumped forward, and in the next second, Cheng Mingli's figure disappeared without a trace.

"Boom! ......" trembled slightly, and the touch of his feet when he landed let Cheng Mingli know that he had finally reached the bottom of the fault zone safely. Two thousand five hundred and thirty-seven .3 meters, this is the exact number calculated by Cheng Mingli in the process of falling. Cheng Mingli was a little surprised, he didn't know how those ancient humans reached the bottom of the fault zone more than 100,000 years ago. It is rare to know that there are few ropes that are so strong that can be perpendicular to a distance of thousands of meters, especially in ancient times when production was backward.

The space below the rock wall is much larger than expected, and there is a faint fluorescence on the surrounding rock wall, so the space below is not as dark as expected. The luminescence is the result of some elements such as calcium difluoride or arsenic mixed with a small amount of radioactive elements. This mineral is very common and is found in large quantities in many asteroid belts, and is the main component of the so-called Night Pearl.

"Click! ......" A fist-sized spar sphere appeared in Cheng Mingli's hand, this is the Xingyu Type 3 emergency field lighting source, the soldiers of the Pioneer Regiment used to call this thing the little sun, which is a commonly used artificial light source in interstellar exploration. Such a small sun can illuminate the entire asteroid valley transparently, and has an autonomous levitation function, built-in direction regulator, the user can control the small sun through remote control to continuously shift the destination.

With the activation program turned on, the little sun gradually became dazzling, and the miserable white light illuminated the bottom of the rock wall, and many places that Cheng Mingli couldn't see clearly before gradually appeared in front of Cheng Mingli's eyes.

It's a huge underground space that stretches for kilometers and looks like a huge underground canyon. At the end of the rock face there is a small stream, and the water flows down from above the rock wall, and then accumulates into a large pool below the rock wall.

The water is so clear that you can even see many snow-white fish playing in the water, these fish have no scales or eyes, but have long tentacles at the edge of their mouths. The large mouths opened and closed, and the sharp and fine teeth were exposed, apparently they were eating meat.

On the rock wall by the pond, a kind of white bryophyte grows vigorously against the stone wall, the moss is very soft, the length is about ten centimeters, and it looks like a small grass. Herbivorous fish and insects weave from moss to moss, evading predators and feasting on the fluffy moss.

At the end of the canyon, a faint cold wind slowly blew in, indicating that this underground canyon was not closed, and there should be other exits to reach here. This explains how the ancient humans on the planet arrived in this underground canyon.

Walking slowly towards the front, stone houses carved out of the rock wall appeared in front of Cheng Mingli's eyes. The stone house is not very spacious, only a dozen cubic meters in size, and it is still dug close to the canyon. The gap is not very smooth, and it should have been cut out little by little with a tool like iron.

It seems that the original hominins lived in the canyon for a long time, otherwise they would not have had the energy to build dwellings underground. As for why he left the surface of the earth and went deep into the darkness of the earth, thinking of the picture described in the mural, Cheng Mingli can imagine what happened 150,000 years ago.

It was a very dark day, and aliens descended from the sky using terrifying beams to hunt down all the humans on the planet. The first to suffer were the inhabitants of the cities of the plains, who had no way to go to the sky and no way to the ground, and were captured in a very short time.

Then there are the humans who live in the mountains, and with the help of the terrain, these humans should have taken refuge for a long time. They hid in caves, in the dense forest, and watched in horror at the spherical flying machines that kept flying through the sky. There are constantly humans who are not hidden deep enough to be captured, and fewer and fewer humans are surviving. For safety, they had to hide deeper underground.

Perhaps by chance, one of the survivors discovered such a hidden underground canyon. They collectively relocated to the canyon to survive, living a life of blood and darkness. In such darkness, they evaded repeated searches.

However, perhaps due to a moment of negligence, or the enemy's increased scanning efforts, they were not able to escape in the end, and in the end they were reluctantly captured, leaving only an empty underground lair, indicating that their group once existed.

Passing through the narrow canyon corridor, huge cliffs appeared in front of Cheng Mingli. These rock walls are filled with all kinds of unknown words, from top to bottom, column by column, as if they are mercilessly telling that dark and desperate history, or recording precious texts, in the hope that civilization will continue to pass on without interruption in difficult years.

Deeper in the corridor, more murals were displayed in front of Cheng Mingli. Compared to the previous murals, these images are more realistic and clearer. If the previous images were children's graffiti, then these are the artistic realism of the painters.

On the screen, countless spherical flying machines shuttle on the surface of the planet, and in the higher sky, the huge "castle in the sky" controlled by the demon is suspended in the sky, exuding five-colored divine light. The demon commands his demons to wreak havoc in the skies of the planet in whining chariots, and will take away all the humans they see.

Obviously, due to the level of technology and vision, these humans did not realize that it was another civilization that came to capture them, but compared these spaceships to castles in the sky, and the flying machines to screaming demons. They are using religion and theocracy to try to explain everything they cannot understand.

"Huh?" Suddenly, Cheng Mingli, who was walking next to the passage, stopped in surprise, and looked at a mural in front of him in a daze...... (To be continued.) )