Logically speaking, the underground lake water should be clear, but in Liu Yu's eyes, it was a bit muddy.
Liu Yu quickly used his Spiritual Sense to explore the lake water. In the lake water, Liu Yu's Spiritual Sense found a large number of microorganisms, the largest of which was the size of a sesame seed.
Liu Yu immediately became excited. If there were microorganisms in the lake water, then the entire underground lake water must have a complete ecological chain, with each other circulating endlessly.
First, Liu Yu's Spiritual Sense swept towards the underground lake water level to see how big the underground lake was.
After a long time, Liu Yu was surprised to find that the entire underground lake was more than three thousand meters long and more than one thousand meters wide. The deeper he went into the lake, the wider it became. Moreover, the creatures inside also became bigger. The entire underground lake was more than eight hundred meters deep and the bottom was ten thousand meters wide. Moreover, there were many underground rivers under the lake.
Liu Yu didn't find any large creatures at the bottom of the lake. There were only clumps of seaweed-like plants, about ten centimeters tall. They ate the excretion of microorganisms in the lake water as food. Finally, these plants released oxygen to nourish the microorganisms' activities. At the same time, the lake water also contained a large number of organic substances. These organic substances came from the substances in the rocks and soil that were impacted by the water in the underground river.
Liu Yu was very curious about the underground rivers on Mars. He wanted to know if this underground lake was the only one on Mars.
Then Liu Yu's Spiritual Sense extended towards a relatively large underground river.
The flow of the underground river was very gentle. Even ordinary people could easily go against the flow. Liu Yu estimated that the source of the underground river was countless small tributaries.
In the underground river, Liu Yu found a lot of creatures. They were about half a centimeter in size and looked a bit like cockroaches. Their shells were very smooth and looked very hard. These creatures were attached to the walls of the underground river and gnawing on the rocks. This was also the reason why Liu Yu found a lot of dense holes in the underground river.
Liu Yu's Divine Sense continued to advance towards the underground river. After about fifty kilometers, his Divine Sense arrived at a wide underground space. It should be an underground lake, but it was much smaller than the underground lake Liu Yu was in.
The underground lake here had many underground rivers of varying sizes that led to different directions. He also discovered cockroach-like creatures and some other microorganisms. Liu Yu estimated that the entire underground lake was like this. The largest creature was only half a centimeter in size.
Half an hour later, Liu Yu discovered no less than ten underground lakes after passing through the underground river. The underground lakes were connected to a very large area, about a thousand kilometers long. The reason for the water flow was that when the planet was rotating, it flowed backwards and backwards.
There was life on Mars, but it was all life without intelligence. Even the ecological chain was very fragile. If a meteorite hit here, the fragile ecological chain on Mars would directly collapse.
In the end, Liu Yu waved his hand and collected hundreds of cockroach-like creatures into the underground river in the small world. He just didn't know what would happen to them in a world rich in resources and spiritual energy.
Then, he prepared to return to the surface of Mars. He removed the two protective shields and left one behind. As time passed, the last protective shield would eventually collapse due to the lack of energy. It would take about ten years or so. After returning to the surface, Liu Yu sealed the entrance.
Then, Liu Yu prepared to take a look at the face stones, Martian skulls, Martian fossilized fish, ancient Martian idols, and pyramids similar to those on Earth. He wanted to see if they were man-made or the work of nature.
Liu Yu's divine sense could spread out for a thousand kilometers, which was very easy for him to examine any object. Liu Yu found skulls, fossilized fish, face stones, and idols. He didn't find any trace of man-made on them. There was a big difference between a closer inspection and an abstract inspection from a distance. These things were the result of nature.
In the end, Liu Yu rushed to the north of Mars, where there were Martian pyramids. According to the 1972 Mariner 9 spacecraft of the United States, a group of strange-looking behemoths was found in the Elitz Plateau of Mars.
From a distance, these objects looked very much like pyramids with a quadrangular base.
In 1976, the United States' Viking 1 spacecraft again photographed a building similar to the Egyptian pyramids in the Gidoni region of the northern half of Mars.
Nine thousand meters away from the building, the spaceship also took a shocking picture.
The photo clearly showed a relief of a human head.
The relief was about 1,500 meters long and 550 meters tall.
It raised its head and looked at the sky silently, giving off a mysterious feeling.
Soon, Liu Yu flew toward the Martian pyramids. When he was far away, Liu Yu did see the so-called pyramids on Mars, and they were very spectacular.
When he flew over the pyramids, Liu Yu landed on the top of the pyramids. Since he didn't know when these pyramids were formed, they might have been weathered. There were no man-made traces on the surface, just like an ordinary stone.
Finally, Liu Yu used his divine sense to explore the interior of the pyramids from the top.
The interior of the pyramids was completely solid. When Liu Yu's divine sense spread to a thousand meters inside the earth, he didn't find any internal space or traces of man-made inside. The entire pyramid was a whole, not built up piece by piece. This showed that there were no intelligent creatures on Mars in ancient times, and no aliens came to Mars to build pyramids. This was a small pity. For the time being, it seemed that humans were very lonely in the universe.
In the end, Liu Yu planned to stay on Mars temporarily. When he was stronger, he would go to the Kuiper Belt. Kuiper Belt was at the outermost edge of the solar system. Kuiper Belt was composed of many meteorites more than 100 kilometers in size. The closest distance to the sun was 30 astronomical units, which was about 4.5 billion kilometers away.
Then, Liu Yu made a hole in the Martian pyramids and planned to stay there for a while.
Liu Yu dug out a space of more than 100 cubic meters inside the pyramids and sealed the hole. A lot of fresh air and some plants were released from the mini world. It was a simple temporary residence.
Liu Yu wondered how people would feel when they found a hollow space inside the pyramids many years later. In the end, they even found traces of human habitation inside. It was very interesting to think about it. Perhaps this would be another unsolved historical mystery.
Liu Yu spent a little more than a year to fly from Earth to Mars. In other words, ten thousand years had passed in the mini world. During this time, Liu Yu occasionally checked the changes on Elysium, but he didn't have the time to do so in detail.
As a matter of fact, Liu Yu's consciousness once again entered the mini world and took over the Avatar of Heaven.
PS: Ahem, it's time to ask for a recommendation ticket again.
Thank you to the 2018 ~ 2019 ~ long-legged beauty, Fu Tianhong for the tip of 100 coins. Thank you very much. Thank you to Bear's Life for the tip of 500 coins and Hu Wei for the tip.
(I remember seeing the name Hu Wei when I was writing the first book. The avatar is also the same. It feels like fate.)
I've been writing for more than a year, almost two years, and I'm still a failure. I'm also helpless. Maybe I don't have the talent for writing!