The two searched in the ruins for a while, but it didn't take too long to find a well. The diameter of the well was about two meters, and the well was filled with yellow sand.

Lingeni looked around and found that the yellow sand was still flowing slowly. It was estimated that it would not take too long for the yellow sand to fill the space here, and it would be more difficult for them to escape. Luo Lie signaled her not to worry. He temporarily removed the nano armor and reached out to penetrate directly into the yellow sand at the wellhead, and found that the yellow sand in the wellhead seemed to be different from the temperature outside.

Lin Geni heard him say this, so she used a detector to check it out and found that the temperature of the yellow sand in the wellhead was 5c higher than that outside. From this point of view, it was initially inferred that the part of the wellhead covered by the yellow sand might have other mystery.

Luo Lie took out the armored shovel and began to clean up the yellow sand inside the wellhead. It took more than ten minutes and had already dug about two meters deep. The top of the armored shovel touched the hard metal panel, rubbing with a squeaking sound.

Lingeni admired Luo Lie's keen insight. If it were others who might not have discovered such a subtle difference under such circumstances.

Although the metal cover was dug in a short time, it would take a long time to clean the yellow sand on it with an army shovel. Luo Lie used a laser beam to cut a hole on the cleaned cover. The yellow sand quickly flowed down the hole. Soon the yellow sand on it was lost, and the entire cover was exposed in front of them.

Lingeni illuminated the bottom from the cutting opening and saw the well hidden under the cover plate bottomless.

Luo Lie touched the back of the metal cover plate and did not feel any moisture. If there was water below, vaporized water droplets would usually condense here.

Lingeni said: "Do you still want to go down?" In fact, she already knew the answer when she asked, and Luo Lie should go down.

Luo Lie nodded and said, "Go down and take a look, maybe you can find some treasures." He is not a greedy person. After experiencing vicissitudes, his view of money is much more indifferent than most people. Even if there are rare treasures hidden below, it cannot impress Luo Lie. The reason that really drives him to go into the bottom of the well to find out is the divine spring mentioned by Sha Gazan.

He was in a hurry to seek medical treatment. For Luo Lie, he would do his best whenever he had a glimmer of hope. There were too many tragedies around him, and he didn't want the tragedy to continue to happen again.

Lingeni grabbed Luo Lie's hand, and she shook her head vigorously, indicating that she was unwilling to go down.

Luo Lie whispered: "Don't be afraid, I have everything."

Lin Geni was not actually afraid. She had not had enough time. Death was just a matter of time. What's the point of being afraid of? She was afraid that Luo Lie would encounter danger.

Luo Lie said: "I don't want to leave any regrets."

Lingeni bit her lip and finally let go of her hand.

Luo Lie cut and expanded the metal cover so that it could accommodate a person through. After fixing the steel cable, the two of them slid down along the steel cable. Luo Lie pulled out a lighting rod, and after bent it, he threw the red lighting rod downwards, and the lighting rod fell under the action of gravity.

Luo Lie judged from the time when the lighting rod stopped falling, the depth of the well was about 100 meters. He did not rush to descend to the bottom to illuminate the surrounding well wall. The overall structure of this dry well is large at the bottom and small at the top. The closer it is to the bottom, the wider it is. A long dragon hovering along the well wall can be seen around.

The tail of the dragon is located at the wellhead and the faucet is located at the bottom of the well. When they come to the bottom of the well, they can see a huge faucet at the bottom of the well. The faucet is carved from a kind of black stone. Lin Geni uses a detector and does not analyze the composition of the stone as soon as possible.

The bottom of the well was exhausted and the dragon's mouth was opened very much. Luo Lie looked inside the dragon's mouth with the beam and found that there was no hole in it.

Lingeni said: "Do you feel that something is missing?"

Luo Liedao: "What?"

Lingeni said: "Should there be a dragon ball?"

Luo Lie visually measured the size of the dragon's mouth. If there was really a dragon ball at the beginning, the diameter of the dragon ball would be about two meters. It would be not that easy to transfer such a large dragon ball. He picked up a stone and hit the ground. The bottom of the well should be on the ground.

Lingeni also used a detector to check the surrounding conditions, and initially ruled out the possibility of hidden tunnels around her. She whispered: "Let's go, it's just a exhausted ancient well."

Luo Lie was still a little unwilling to give up and brushed away the floating sand on the ground, hoping to find some clues.

At this time, the quicksand had already flowed through the wellhead above and fell from the holes in the metal cover plate. Lin Geni was a little worried that if they delayed for a while, they would have the possibility of being buried alive in the well.

"Let's go quickly, it's too late."

Luo Lie said: "Where did the sand just now go?"

After he reminded him, Lin Geni remembered that all the yellow sand piled on the wellhead cover just now should have poured to the bottom of the well. Although there are a lot of yellow sand in their foothold, the quantity is still relatively small. In other words, the yellow sand that falls from above must have another place to go.

Luo Lie found a gap in the direction of the yellow sand flowing. The gap was located below the faucet, and the yellow sand gathered in the same direction. An oval-shaped hole could be seen below the faucet. At this moment, more and more quicksand fell from the head. Although there were gaps, the width of the gap was not enough for them to pass. Lin Geni hoped that Luo Lie would leave as soon as possible, but Luo Lie was not willing to give up easily. He decided to detonate the lower part of the faucet.

After the bomb was installed, the two came to a relatively safe place to hide. Luo Lie detonated the bomb. This explosion exploded the entire jaw of the dragon head. The sound and air waves caused by the explosion made the sand and dust in the well churned. Fortunately, they had the protection of nano armor, otherwise they would be unable to escape being impacted by the explosion wave.

Luo Lie increased the explosion equivalent to the highest value within the range that the nano armor could withstand. After the violent vibration caused by the explosion, the bottom of the well where they stood suddenly sank down because they grabbed the steel cable in advance. Although their bodies sank, they did not fall into trouble.

The length of the steel cable was not enough to reach the bottom of the lower space. Luo Lie and Lingeni looked at each other in the dust. The two nodded and let go of the steel cable at the same time.

The two of them were moving freely in a body and their speed was increasing. Lingeni measured their distance from the bottom according to the index. When they were about fifty meters away from the bottom, they activated the deceleration function of the armor at the same time, and the falling speed was rapidly slowed down. When they were five meters away from the bottom ground, the nano armor had successfully slowed down their descent speed to a safe range.

Underneath his feet is an underground river with rapid flow and the width of the river is about fifty meters. Their landing position is just at the center of the river. According to the feedback from the detector, the depth of the river is more than sixty meters. The two did not choose to fall blindly, but used the flight function of the armor to arrive at the north bank of the underground river.

The river bank is a soft beach. Luo Lie looks around and conducts a safety assessment of the surrounding environment as soon as possible.

Lin Geni looked up and looked above. The explosion just now blasted through the bottom of the well. The yellow sand above formed a quicksand waterfall. The hole produced by the explosion continued to leak into this hidden underground world. However, the flow rate of the yellow sand was obviously slowing down. It seemed that it would not take long for the gap above to be blocked by the yellow sand, which would again close the underground world. Lin Geni couldn't help but worry, what if they couldn't find a way out before they had no food?

Luo Lie came to the river and reached out to test the water temperature. The river water was warm and soft, which was different from the groundwater that was usually cold and bone-bone.

Lingeni tested the water quality and found that the water quality here was surprisingly good, and it was the kind that could be consumed directly. Although it was deep underground under the sea of ​​sand, the air here was not toxic.

The two opened their hoods, Luo Lieju raised a handful of river water and drank it directly. Lin Geni was also a little thirsty, and after drinking the water, he filled the kettle.

Luo Lie Road: "Are there large rivers or lakes nearby?"

Lingeni shook her head. They were in the core area of ​​the desert. Not to mention nearby, there was no large lake in the area within a radius of 100 kilometers. She understood the reason why Luo Li asked, and the underground river in front of her was quite large in scale and had a very large flow, which would inevitably be connected to large water sources.

Luo Liedao: "In history, this place was not a desert, but a big river."

Lingeni asked herself that she had some research on history and geography, but there was no big river here within her knowledge.

Luo Lie had already seen her confusion from her face and smiled and said, "This big river has appeared for a short time. According to legend, before Dayu controlled the flood, the floods raged, and the rivers and lakes were diverted. A big river called Liantian River appeared in this place."

Lingeni said: "You are talking about legends." After all, the history of the Xia Dynasty has not been officially confirmed. Although what Luo Lie said has appeared in myths and legends, it has not been recognized by historians.

Luo Lie said: "Even if it is a legend, we should be able to discover something. If we hadn't reached the sea of ​​sand, how could we find this big river?"

Lingeni nodded: "Downstream or againststream?"

Luo Liedao: "Go upstream!" Only a life that goes upstream is meaningful.

The two of them walked along the river. At the beginning, the banks were covered with soft yellow sand, but after two hours of their advance, the river surface suddenly narrowed, and the turbulent river water gushed out of two huge rocks. If you want to continue moving forward, you must climb up the rock.

They climbed up the rock and found that the rock had been obviously carved by artificially. The rocks were superimposed one level after another, and the riverbed continued to rise with the changes in the terrain. When they climbed to the middle, Lin Geni looked back and saw the big river beside them gushing like a waterfall, majestic, and the sound of the water flow was like thunder, deafening. Lin Geni shouted: "Do you feel like the reservoir opening the gate to release the flood?"

Luo Lie nodded. It was true. The scene in front of him was like a flood discharge from the reservoir. Judging from these stones, it was probably a large-scale water conservancy project. Logically speaking, this water conservancy project should have been located on the surface of the earth, but later it was buried by quicksand with the changes in the landform. However, it is a bit puzzling. Why did the yellow sand not completely submerge the here after so many years? The underground river and the adjacent buildings did not suffer much damage.

Climbing along the layers of boulders, when they came to a high place, the surrounding area was pitch black. Lingeni shot a flare forward, and a large-scale building complex appeared in front of them. Luo Lie and Lingeni were both shocked by what they saw in front of them. This was a city buried under the sea of ​​sand. The city should have been built on a mountain in the past. The underground river rushes and flows along the central axis of the city. On both sides of the underground river are various buildings built along the mountains.

Apart from the sound of the river flowing, there is no breath of life anymore, and humans, animals, plants, they have never seen a grass, a moss, or a bug until now. This is a place where the sun cannot shine, this is a forbidden area of ​​life, a corner that has been forgotten by the world.

Lingeni said: "How could there be such a place? It is hidden underground in such a scale, and has never been discovered after so many years? And it has not been buried by the sea of ​​sand, and it has basically retained its past appearance."

Luo Lie walked forward a few steps and whispered: "There may have been an earthquake here. The earthquake caused the entire city to sink, and then the cracks squeezed and narrowed, so the city fell into the dark underground." He saw a crack of ten centimeters wide under his feet, and the more cracks he walked forward, the more cracks he had.

Lingeni looked at the cracks on the rock layer that looked like scars, and couldn't help but feel secretly shocked. If Luo Lie guessed, the earthquake that year would have been thrilling. It could be described as the sky and the earth. A city, a city built on the hill, disappeared without a trace in an earthquake, and there was no record in history.

They first fell into quicksand and saw that the place where the stone pillars group should be related to this city. Lingeni suddenly stepped on something, looked down and found that there was a twisted iron pick under her feet. She picked up the iron pick, Luo Lie also came over, and immediately determined that the iron pick should be a modern product, which means that someone had already arrived here before them.

"It seems we are not the first to discover here."

Luo Liedao: "Didn't Shagazan say that mines were opened in this area, but later it was abandoned because of an explosion."

Lingeni said: "Didn't it be that mining was not mined in the past? It was just using mining as a cover. The real purpose was to explore this underground city?"

Luo Lie smiled. Lin Geni's statement was just a guess, but this possibility cannot be ruled out.

Lingeni said again: "Maybe the mine was discovered at the beginning, and it was indeed mining, but after the mine disaster caused by the explosion, the place was abandoned. The miners who were in trouble did not die at that time. The survivors looked for a way out everywhere, so they found this place."
Chapter completed!