The production of air circulation magical equipment and filter chips was a very mature and reliable technology. Even in the Great Dark Age tens of thousands of years ago, people had been cruising in the vacuum of the universe on starships that boasted air circulation magical equipment.
No matter how the technology was destroyed in the war in the past ten thousand years, the most fundamental technology had never been lost. Even the Xing Yao Federation at the edge of the cosmos had developed to the peak. The super large air circulation system in the space fortresses was enough for tens of millions of people to breathe the freshest air at the same time.
The technological level of the Imperium of True Human Beings was at least dozens of years more advanced than that of the Xing Yao Federation. Naturally, the many technologies in the field of air circulation were not a problem at all.
Li Yao had received tremendous files about the starships of the Imperium from Li Linghai's Deep Sea Palace. He had studied the air circulation system of the starships deeply.
Even the heavy starships that were more than ten kilometers long that were produced hundreds of years ago did not have any technical difficulties in their air purification, filtering, and circulation systems. With a tiny bit of highly-concentrated 'conversion agents', the waste gas could be transformed into fresh air incessantly, and the toxins in the air would be filtered out with 'filters' in the molecular level. Even when furious flames were burning inside the starship and intense black smoke and venomous fog were unleashed, the combat efficiency of the starship would not be affected at all.
The air circulation magical equipment used deep below the ground was slightly different from the magical equipment of the same type carried by the starships. Airtightness was not very important, but the heat-resistance and anti-vibration properties were particularly demanded.
It was not a big problem, either. Li Yao knew quite a few special ceramic materials. As long as they were sprayed on the surface of the components, the heat-resistance and anti-vibration properties would be significantly improved. The technology was not complicated, and the cost was definitely not high, either.
However …
Inside the core unit of the air circulation magical equipment used in the 10084 zone, all the cleaning chips and switching units were rusted and in bizarre shapes. The rune arrays carved on the surface and inside were all askew, as if they had been painted clumsily by a child. There was no heat insulation treatment at all.
Because of the nonstop operation day and night and the lack of a well-ventilated cooling system, the temperature inside the magical equipment units was already extremely high. One could even leave a shallow hole if they poked the units with their fingers.
Such components could not be described as' shoddy 'at all. They were far behind the times. Even the assembly lines of components from five hundred or even eight hundred years ago would not have been able to produce such lousy products. Who the hell knew in which workshop the components had been produced?
It would be a miracle if the air in the town could be fresh when such counterfeits were used. No wonder Li Yao's smells of stagnation from beginning to end!
Li Yao of Li Yao's of course of a thousand years of his life of a thousand years of a thousand years of years of a thousand years of his life.......................... Holding back his fury of of of the locals.................. ................ You've all been fooled! "
Li Yao's voice echoed inside the enormous cave and was shattered into pieces by the stalactites and the stalagmites, but it did not raise any waves. The locals who had been looking at them from the stalagmites, fungi, and fungi quickly retreated like frightened snakes.
"It's useless, Brother Yao. Stop shouting. Except for the few specialists trained by Sister Long, nobody else will talk to us."
Li Jialing explained, "The locals regard us as Immortal Cultivators, or at least people who have come from the ground very, very high.
"For hundreds of years, the Immortal Cultivators from the surface of the planet have never brought any benefits to the locals. On the contrary, they have only brought enslavement, destruction, and disasters. Wherever the Immortal Cultivators show up, it often means that precious mother lodes and relics have been discovered. It also means that the villages nearby will be doomed!
"As time went by, the fear of the ground people was deeply imprinted in their flesh and bones. The only way for the ground people to resist was silence.
"That was based on countless experiences. When the Immortal Cultivators heard that new mother lodes and relics had been discovered, they pretended to be friendly and came to the underground world. They even sent tremendous assets that the locals were in dire need under the pretense that His Majesty was concerned about the ants and that the major sects were offering free assistance, but in fact, they were only trying to elicit the intelligence of the mother lodes and relics from the locals.
"After they got the intelligence and figured out the coordinates and reserves of the mother lodes, the Immortal Cultivators immediately turned hostile and destroyed the village. All the villagers were either killed on the spot or exploited to death.
"This kind of thing has happened hundreds or thousands of times. It is bound to leak out. As time went by, all the underground people knew that talking to the people on the ground would bring disaster. They had to keep their mouths shut and stay away from them."
Li Yao frowned and asked, "Aren't we the honorable guests of the 'Serenity Seraph'?"
"It is precisely because we are Sister Long's honored guests that they dare to gather their courage and watch us. That is why there are maids who can speak a few words to us."
Li Jialing said, "Otherwise, if the locals from the ground like us showed up here, chances were that they would all hide in the deepest part of the cave and shudder in fear together with the rock worms!"
Li Yao sighed. His eyes pierced through the dense fog again and even the cold and hard shell of the locals. He seemed to be able to sense the fear, anxiety, confusion, and even the tiniest bit of … expectation behind their indifference.
Li Jialing continued, "In fact, you don't need to ask them such a simple question at all. You can figure it out if you think about it carefully. If the components that are sold to them are not so lousy that they break down every day but the excellent products on the ground that can be used stably for a long time, wouldn't the supply of oxygen deep below the ground not be a problem at all?
"If the oxygen is not a problem, and there are plenty of rock worms, this place is completely self-sufficient. Then, how can the three- and four-digit towns above control the five-digit towns such as the 10084 district? How can they trade a tiny tank of compressed air for dozens of rock worms?"
Li Yao was slightly dazed. His eyes gradually turned cold.
With a bitter smile, Li Jialing said, "After living a carefree life for half a year with the omnipotent Brother Yao, I feel that I'm back to the days when I had to activate my brain cells to the maximum every second. The feeling of seeing everything so clearly is truly … uncomfortable!"
Li Yao stopped talking and fell on one of his knees before the air circulation magical equipment. Narrowing his eyes, he listed the materials inside his Cosmos Ring and the maintenance plans in his brain.
Maintaining the air circulation magical equipment was a piece of cake for an expert like him who could even repair a Colossus.
However, it took Li Yao five minutes to consider and polish the entire plan with the most prudent and meticulous attitude. Then, with all his skills, he polished all the components in an hour. He simply threw away the garbage that was too unusable and replaced it with the Heavenly Materials and Earthly Treasures that he had tricked from Li Linghai. He also reconstructed the entire circulation and purging system with the microscopic sculpting on the molecular level at the cost of his soul, which was still extremely feeble.
As for the conversion agent to convert carbon dioxide into oxygen, there was no finished product inside his Cosmos Ring. Thankfully, the preparation was not complicated. Li Yao synthesized a bucket of it with quite a few kinds of invaluable cooling liquids and accelerants without frowning at all. With the consumption of all the residents of the 10084 district and the rock worms, it shouldn't be a problem for them to last two to three years.
"Done!"
Looking at the components that were as bright as new and glittering, Li Yao smiled and closed the cover of the core unit softly. Then, he slightly adjusted the rune arrays nearby.
Immediately, fresh and cool air spurted out of the branches and roots that extended to every corner of the town from the "gigantic tree". It was as refreshing as a drizzle on a hot summer afternoon.
The underground locals had been observing Li Yao's actions carefully from a distance. They did not have the courage to stop him, nor did they know what he was doing exactly. It was not until this moment that they vaguely realized what was going on. They could barely believe what their eyes and their skin had sensed. They were all dumbfounded and dumbfounded.
It had been a long, long time since they had known the feeling of "ecstasy" since their ancestors. The darkness and the predicament of reality even forced them to accept Long Yangjun's "kindness" and abandon the feelings that were full of pain and desperation.
But right now, their brains that had been sealed for a long time suddenly rippled. Rigid, twisted, and weird expressions appeared on their faces. Flowers blossomed hesitantly on the faces of the men, women, and old people. As if they were drunk, they all staggered and waved their hands and feet.
"Dear folks, I've just repaired your air circulation system and restored the oxygen content in the air to the normal level. I've also purged the toxins in the air. You've been used to living in an area with a low oxygen concentration for a long time. The sudden increase of the oxygen concentration will cause the phenomenon of 'oxygen intoxication', but it won't affect you at all. It will only make you smarter and stronger. Don't be nervous!"
Li Yao stood straight again. Not caring whether or not the underground locals could understand him and whether or not they believed him after they understood him, Li Yao simply declared aloud, "I have discovered a lot of problems in the overall cooling system of this town. After I return from deeper below the ground, I will certainly help you fix it. Then, I will compile the entire maintenance process into an operation manual for you so that you can perform the maintenance on your own. Trust me, it is not complicated at all.
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