"What do you do now? Which way to fly?" three Mei turned her head, stared at the people behind her in the glass cover, and tried her best to stabilize the bumpy "four unlike."

Now we have temporarily abandoned the pursuers, but according to the instructions on the sign, we don't know how large the underground hot fountain is intermittent. Therefore, as long as the eruption period is over, they will pursue us with this multi-purpose underground vehicle that can drive on the track, fly and float on the water.

"I don't know which way to go, but I feel that the most important thing is to go up," I said anxiously, lying on the deck of the vehicle and looking at the rising water column.

Sure enough, as soon as the voice fell, a huge column of water hit our vehicle like a high-pressure water gun, making the whole car full of water and steaming. Almost everyone would be seriously scalded if they didn't wear pressure resistant clothes with good heat insulation. He wiped off the water on the mask. In his mind, the plane was overturned, and all nine of us fell into the boiling water below, rolling like shrimp dumplings in a hot pot.

"Hold on to it all." with a charming roar from San Mei, we suddenly tilted up. Ivan held Irina who had awakened. Everyone else took care of themselves and grabbed the armrest of the chair. The underground vehicle pulled up like an airplane.

After flying up for dozens of seconds, the searchlight at the bow of our ship could already see the rocks above our heads. Besides the occasional water column, most of the others could not reach this height, so we flew flat temporarily and gathered together to think about countermeasures.

"Or? Fly back and fight with them?" Ivan gritted his teeth with a gun. Even in his helmet, I can still see the beating tendons on his face. This guy is really angry at his cousin's experience. Now he dares to throw a nuclear bomb into the club.

"Even if we want to fly back, we can't find the direction. We didn't make a mark just now. We were rushed by the water column and lost our way," said Sanmei, lighting a compass on the dashboard with a light on her head. However, after saying this, she seemed to think of something, so she lay on the dashboard and searched carefully like looking for contact lenses.

"Will there be a way out?" Ivan asked me as he patted his cousin.

Before I could make a sound, I escaped with us. The blonde young woman named Nightingale looked up and said, "I'm afraid there won't be an exit. We should be in the space inside the lithosphere, which is eroded by the underground water system. There are a large number of granite strata on our head. There shouldn't be any channel for us to fly up."

"What circle? I only know that there are doughnuts, doughnuts and rocks." Ivan asked with confusion on his face.

"Shut up, you eater, and how do you understand this?" I pounded Ivan with the butt of my gun. Said to the girl again.

"I'm a senior majoring in geological exploration at Moscow State Institute of petrochemical and gas technology. I often sing in bars and night shows to earn some tuition and living expenses. Later, I was cheated here." the young girl cried in her hood, which made her face more and more hazy, However, the sound from the sound hole under the head cover is particularly good, giving people a feeling that I still feel pity when I see it, and there is a desire to protect her for no reason.

"Professional, admire, you go on, what rock circle?" I patted her on the shoulder to help her calm down. It is said that rhythmic tapping will calm human beings. It has been formed when the baby is in the mother's mother and listens to the mother's heartbeat. Therefore, it is a universal way of comfort across race, color and nationality.

But I just patted on the beautiful girl's shoulder. Sanmei was busy manipulating the "four unlike images". Before she said anything, Jinlihua coughed twice. At the same time, there was a warning look in his eyes. It felt like a little wolf dog who helped his owner take care of his property. I was so angry that I rolled my eyes and thought that this woman could distinguish between big and small kings. I knew that Sanmei was stronger than me. I didn't miss every opportunity to form a close friend with Sanmei.

Because the eyes were all behind the hood, the Nightingale didn't see it. She continued: "The lithosphere is a hard rock layer in the upper part of the earth relative to the asthenosphere, about 60 to 120 km thick. In this layer is the seismic high velocity zone. Its scope includes all the crust and the upper part of the upper mantle, which is mainly composed of granitic rocks, basaltic rocks and other minerals, such as silicon, sodium, magnesium and lithium. Then down is the seismic low velocity zone, partial melting layer and thickness 10 0 km asthenosphere... "

Her standard book definition doesn't matter. We all understand two problems: "first, she is really a professional; second, what she said is too professional for most of us to understand."

At present, we are in the boiling fountain column. There is no way in front of us. There may be pursuers behind us at any time. It's not a time to be polite and elegant, so I immediately interrupted her and said, "stop, stop, you pick the important thing and say that we are all big old people". After that, I thought I must read more books when I go back. I feel a little terrible if I have no culture.

The Nightingale seemed to have good looks and voice, good professional knowledge and good temper. She was not unhappy because of my interruption. She continued to say in a good voice, "do you understand the plate theory?"

"I know. The seven major seem to be the Pacific Ocean and the Eurasian plate. The plate junction is an area with frequent earthquakes and volcanic activities. The plate will shift under stress, form folds and faults, and form huge folded mountains, grabens and rifts structurally. I have learned geography lessons." I replied a little coquettish, thinking that knowledge is a good thing, In addition to using it, it can also be displayed in front of women.

"To be exact, it's seven big pieces and six small pieces, but it doesn't matter. If you have the concept of plate, it's much easier to explain. The earth is an elliptical sphere with a radius of more than 6370 kilometers. On this sphere, there are several plates on which we live, and plates of different sizes composed of different rock strata drift on the asthenosphere. Finally, plates are divided into different levels, and the rock thickness of continental plates is lower It's much larger than the ocean, about 60 to 120 kilometers. We're flying in this space now. "The Nightingale said in one breath. I finally understand that these theories basically help us zero.

"Do you know how to get out?" Ivan asked with his worship of science.

"I don't know. As I said just now, there is a granite layer on the top of my head. If we find the channel through which the volcano erupted, that is, the lava channel, it may be possible to go out." the beauty called Nightingale brought us a glimmer of hope with a beautiful voice, as if we felt the sunshine and flower fragrance again in the dark underground.

"I have a way." Sanmei, who has been silent, suddenly spoke.

"Really? Come on." we were all overjoyed, especially Jin Lihua and Ivan. They both knew that I often ran the train with my mouth full. 33.3% of my ideas were true, 33.3% were false, and the remaining one-third were bad ideas between true and false. But Sanmei is different. She is not sure that she will not speak easily.

"In order to prevent the driver from being scratched by the debris generated after the impact, the surfaces of these instruments are covered with a layer of transparent hard plastic. There are often scratches on the two points of the steering wheel and compass, indicating that these points are often scratched repeatedly during cleaning. Then, why is this?" San Mei threw the answer directly before we had a guess.

"Drivers touch these points with their fingers or mark them with a color pen," she said. When I heard this, I leaned over and looked carefully on it. Sure enough, there were some small scratches, just like resin glasses. After a long time, the small scratches on it can be seen from the side with light.

"The point often marked is where they go with this vehicle," Jin Lihua said.

"There must be a way out where they go." even Ivan seemed to react and said excitedly.

Seeing that there was no objection, Sanmei immediately turned around and flew to the sign on the compass. Ivan and I climbed back to the bow and helped clear the route with a searchlight. This kind of flying experience is the first time in my life. It's empty below, but there are dead rocks on my head. It feels like flying under a cloud composed of stones.

What's more, the stones above our heads are completely irregular, like a jagged stone forest, which is stuck on the top by the bottom facing the sky, so we often turn right or left like a stunt, and the wings almost fly past the stone wall several times. This is also due to Sanmei's sharp eyes and extremely rapid response.

After flying for a long time, when the pointer of the oil gauge was close to the red area, we finally couldn't see the high water column of the hot fountain in front of us.

"There must be ground" I looked at each other, but Sanmei didn't hurry to fall down, because it might be splashed by the hot spring near the shore, which is also very dangerous.

Glancing at the fuel gauge that had seen the bottom, Sanmei roared: "all ready for forced landing", then pushed the control lever, and the nose plunged down.

In fact, needless to say, these people have already made preparations for each other. The Gladiator named ares seems to be praying, but I don't understand a word. It may be the local language of his own nation.

The "Sibuxiang" we took didn't have the landing gear of the plane, but we added a circle of inflatable rubber like the inner tube on the body, which was originally used to increase buoyancy in the water, but now it has played a role in collision avoidance.

The flying "Sibuxiang" originally landed flat, but the ground was full of black rocks. "Bang bang" with the shaking of the body, the wheels flew slightly, followed by the body sliding close to the ground, dragging countless sparks behind us, like a crashed train rushing to the platform. The collision was accompanied by cousin Ivan's scream. Sanmei and Jinlihua were used to this little scene. They were not nervous. Even the woman called Nightingale was calm and admired her courage.

Then, after a series of frightening impacts, we finally stopped, and the car body was completely deformed. Fortunately, there were flat rock surfaces in this area, otherwise we might hit some obstacles and destroy people in the car.

"Let's abandon the car and walk," I said forcefully and breathlessly. I pulled several people up and helped them down. I took AK's multifunctional bayonet and unloaded all the things that can be used in the car, such as compass and thermometer. I didn't even let go of the wood on the chair. I took it down and made several torches.

Ivan also joined the ranks of "picking up rags" with me. He knocked around with a military knife, screwed off the screws and hit the fuel tank. With a sharp military knife and the butt of the gun, he cut off the fuel tank and stained the bottom oil residue with wood. I finally tore open two more wires, sparked a few times, and ignited the wood in front to illuminate the road.

"Everyone turned off the overhead lights and followed me." after that, I took the lead to go on. The reason for this is that the underground situation is unknown. If there is no lighting tools, there is a dead end. Everyone's overhead lights use batteries, so time is limited, so we can't waste it.

In this way, I took the lead and held a torch. Behind me were Sanmei and Jinlihua holding two pistols, followed by the black boxer named blood dragon and Ares. They held Irina and Nightingale respectively, and at the back were Ivan and Andre holding AK.

"Where are we going?" San Mei patted me on the shoulder and asked.