The swamp area was huge, and Wu Chen didn't remember that there was a lake nearby. Comparing the TT40 with the old map, it was also determined that there was no nearby. Such a large area of stagnant water......

A broken water pipe can't flow out of such a large swamp.

Subway pipe gushing.

Maybe a subway tunnel was destroyed, causing a pipe gushing. The ground, which was piled up with ruins and burned into a scab by the fire dragon, had nowhere to be discharged, and over time, this swamp was formed. Of course, it is not excluded that the water lizard blocked the drain and created this rare habitat for itself.

In any case, Wu Chen has to complete the task.

TT40 gives the approximate direction of the subway entrance, which is the starting point of Line 2, where most of it has been submerged in water, and the shells of the surrounding landmark buildings have been burned to soot.

Cybertrons are waterproof. Dog meat is no exception. Whether it's going down to the sea to save Megatron or the confinement slowly rising from the water, it shows that the Cybertrons are waterproof.

The ruins of various buildings were piled up under the surface of the water, in different shades, and after the dog meat scanned, the underwater topographic map was quickly obtained.

Step on the solid ruins as much as you can, wading through the water to the target point. Many times, Wu Chen's cockpit brushed the surface of the water, and then when the dog head plunged into the water, the cockpit became a veritable submarine. The pod, which is made according to the grade of the submarine, is not only waterproof, but the built-in air filtration device even begins to release the oxygen stored in the gas tank, replacing the carbon dioxide exhaled by Wu Chen.

In fact, Wu Chen's colonization has a perfect filtration function. Even if it is not replenished, the high-pressure oxygen stored by the metal cells is enough to support Wu Chen's breathing for several hours.

Soon, Wu Chen saw the abandoned Line 2 train submerged under water. Dog meat did not find a serious entrance to the subway. Rather, from a section of collapsed pavement. Drilled directly into the subway tunnel.

The direction of the water flow. It also confirms the judgment of the subway pipe gushing.

Assembling the map of the eighteen stairs, TT40 quickly determined the approximate location of the smoke exhaust vent.

Has anyone seen a radar glow like a searchlight? Of course not. Therefore, with the help of Goumeat's high-tech radar, there is no need to turn on the headlights of the pod, and the internal structure of the entire subway tunnel is clearly displayed on the LCD screen in front of the cockpit.

Cybertrons breathe to cool down. When you enter the water, you don't have to breathe anymore. Because the air cooling has become more powerful water cooling!

There is never a choking hazard with dog meat.

Stepping on the roof of the scrapped subway, Dog Meat quietly sticks its head out of the water.

Just as an upside-down empty glass in water will not fill with water, there is still a part of the subway tunnel that is not soaked in water due to the air pressure. And as the dog meat gets closer to the smoke outlet, the water level begins to drop. The temperature also began to rise. The TT40 tried to test the air. The concentration of carbon dioxide was found to be very high. Carbon dioxide is very soluble in water, but it is soluble in water. Like the usual Coke soda, when the bottle is opened, gas comes out, and that is carbon dioxide.

"Master, I seem to know what the reason is." TT40 spoke suddenly.

"What?" Wu Chen, who was engrossed in staring at the few eggs that appeared on the display screen, didn't react.

"Air pressure and water pressure." TT40 explains: "Because of the sealing of this long metro tunnel, the exhaust gases from the exhaust pipes of the power plant need to push out a large amount of stagnant water to escape the air. Maybe there wasn't that much water in the past, or there were some openings in the roof of the tunnel where exhaust gases could escape......"

Wu Chen understood. This is the same as blowing blisters with a straw. If it is an open water surface. Like a cup, or a basin of water. With a blow with a straw, the blisters gurgle and come out easily. If it is an airtight container, such as covering the rim of the cup with your hands, it will be difficult to blow it again. Because the air inside the cup cannot be discharged, a lot of air pressure is formed.

Waiting for the dog meat to walk up the steps to the dry ground, Wu Chen finally saw a huge smoke exhaust pipe and a nest of huge lizard eggs.

The lizard eggs are wrapped in a thick layer of mud, like huge pine eggs. The mud, which has been baked into a hard scab by the high-temperature exhaust gas, is like a natural cotton coat and armor, protecting the small lizards that are hatching inside.

Wu Chen couldn't help but sigh at the greatness of maternal love. The previous female umbrella lizard did not hesitate to devour steel in order to protect the hatching eggs. And this mother lizard, out of thick mud, created a thick layer of armor for the cubs. However, just as the surface of the egg's shell has many small holes that allow air to pass through without hindering the embryonic respiration inside the egg. There is also a lot of this thick layer of mud - cracks.

It's a brilliant principle of nature. Just like the bottom of a dry pond, in an arid farmland, there will be many cracks.

40% of the soil is water, and water can "stick" the soil well. When a large amount of soil moisture evaporates, there is no water bonding and the surface heat expands and shrinks, so cracks will occur. In times of drought, the surface soil loses more water and has less tension than the wetter soil layer at the bottom, which cracks under the combined action of gravity and bottom tension.

The 'bottom layer' here is replaced with the surface of the lizard's eggshell.

In this case, it makes sense for the water lizards to choose to incubate their eggs here. The high-temperature exhaust gases produced by the combustion of natural gas not only provide the temperature required for incubation, but also provide enough heat to bake this thick layer of earth armor.

Of course, the role of mud shell is not only protection, but also heat preservation.

However, the mother lizard made a fatal mistake. She didn't know that the exhaust fumes were not the air she breathed every day, but deadly carbon dioxide. This is the difference between intelligent beings and higher intelligent beings. The result was fatal. Fortunately, after the dog meat was scanned, it was found that the embryo still had signs of life. In addition to the resilience of the mutated lizards, the fact that the female lizards have only recently nested here is also an important reason.

And the 'skylight' blocked by the female lizard is on top of the mud nest.

It's no wonder that if the skylight above is not blocked, the waste will be discharged directly from here to the ground, and it will not accumulate in the subway tunnel to compete with the stagnant water.

"Open?" TT40 asked.

"It's definitely not going to work when you open it." There must be a reason why the female lizard is plugged. The skylight opens and the heat drains quickly, if the temperature is not enough. It is likely to affect hatching. It's pulling hatred.

"The hosts. Dog Meat scanned the temperature at the core of the lizard egg. It's not as high as the outside world. The temperature of the space we are in is already as high as 56°C, and the temperature of the core of the lizard egg is less than 30°C. ”

Looking at the subway ventilation duct hanging high at the top of the tunnel, Wu Chen immediately said: "Let's see if we can change the line." ”

"What do you mean?"

"Connect the exhaust gas outlet to the ventilation duct, and then close a section of the ventilation duct to these eggs, and then connect it out of the ground ......" Wu Chen gushed a lot, but it was summarized by TT40 in one sentence.

"Put a radiator on the eggs?"

"That's right!" The function of the radiator is to collect the heat that spreads throughout the underground space, so that although the heat is discharged, the heat is constantly circulating in the pipes. So the temperature near the lizard's nest will not drop. A more important effect is that only the heat energy is retained, and the toxicity is removed.

In this way, the temperature required to hatch the lizard eggs is ensured, and the waste is discharged in a timely manner. Kill two birds with one stone.

Just do it. The TT40 calculates the exhaust air flow and the temperature loss of the lines in detail, and a simple and accurate design method was quickly developed. After letting the robot dog release sound waves and making sure that the ventilation lines overhead were still clear, the renovation began quickly.

The robot dog uses a laser light eye to intercept the discarded iron pipes from the direction they came, and then transport them back to the high platform where the lizards nest. Then surround the lizard's nest. Coiled in circles to form a wall of pipes, and finally fold upwards along the wall. Connect the ventilation ducts that are still open.

When connected with the exhaust pipe of the eighteenth ladder, the high-temperature exhaust gas will pass through the pipeline, circle by circle around the lizard nest, spiral upward, enter the old ventilation pipe of the subway, and successfully discharge.

After the TT40 test, it was found that the incubation requirements of lizard eggs were fully met.

The cutting and welding of the pipeline all rely on the laser eye of dog meat. Otherwise, Wu Chen would not be able to achieve the platinum evaluation of the completion of the task at all.

The reason is very simple, if you want to solve the problem of smoke exhaust, in fact, you only need to blow up the skylight blocked by the female lizard again. However, heat is lost quickly, and lizard eggs are likely to stop developing. Not only will the baby lizard not hatch, but it will also arouse the hatred of the mother lizard, and it is almost impossible to recruit her.

As a technical nerd who pursues the perfect memory synchronization of all elements to collect zero death, S-level evaluation is the minimum requirement. Generally, otaku do tasks, pick up a bean, pick up a bean, kill a person, do whatever the task is, only pursue the speed of customs clearance, so in the eyes of technical nerds, this is not called playing a game, but being led by the game to play.

Exploring the world and mods is a must-have for tech nerds.

Referring to the motive of the umbrella lizard to close the underground parking lot, it seems that the female lizard rarely returns after building the nest. This may be in line with their natural habits. As the air pressure decreases, the surface of the water has a slight echo. However, there is still a long way to go from the high platform where the lizards nest, and judging from the previous water line, there are still 4 or 5 steps from the high platform, and the lizard eggs will not have a problem.

After completing all this, Dog Meat returned the same way with Wu Chen. Before the tunnel could break out, an unexplained tremor began without warning. TT40 collects seismic waves to determine the approximate location of the hypocenter. It was at the position of the large disc at the original entrance of the field. It is also the central area of the entire swamp.

The Dead Dog aura silently opened. Wu Chen thought for a while and said, "Go and see." ”

Dog meat dives into the swamp and rushes towards the epicenter by stepping on the ruins of buildings submerged under the water.

In the distance, Wu Chen saw a huge upright green lizard. After the TT40 scan, it gave the judgment that it is a variant of the Chinese water dragon. However, the Chinese water dragon in Wu Chen's impression should have a very tame personality. But now this rampaging giant beast is holding a piece of reinforced concrete that has been removed from the nearby building and smashing it into the water not far away. Stir up the waves!

The huge concrete blocks thrown by the female lizard like cannonballs are completely the killing of siege trebuchets!

Even a strong castle can fall apart!

The ruins of a nearby building were unfortunately hit by a boulder and collapsed in its entirety!

Wu Chen finally saw the huge object that was previously blocked by the building. It was a huge crocodile!

No wonder the wife of the head of the museum's remnants said that the underwater city of the Three Gorges was destroyed by a group of giant crocodiles. Now, Wu Chen finally understood what a huge crocodile it was! (To be continued......)