Chapter 147: Furnace Cave, Ling Shuyan's Arrival

As everyone prepares, the battle is about to begin.

After listening to Lin Feng's order, five second-level awakeners led a hundred soldiers to launch a surprise attack on the red beetle group beside the wall.

To deal with the low-level red beetles, there was no need for shotguns. Soldiers armed with large-caliber rifles and heavy machine guns would kill them all.

At the same time, you can also use this to improve your own level.

After a wave, more than a dozen soldiers have been upgraded to level 9 enhanced people. They only need to kill one more black spine insect to become the next awakened one.

Shen Jie rushed to the front of the team and transformed into a black warrior. The black armor was integrated with the modified armor on his body. The two-meter-long sharp bone blades on both sides of his arms slashed a "Y" slash on the thick wall.

The dozens of tons of power of the second-level mid-level awakeners, combined with the extremely rapid explosion of the black warrior form...

I saw the bone blade flashing with white light, and the high wall that was half a meter thick was easily broken open.

A gap four to five meters wide appeared in front of everyone as the torn cement wall collapsed and splashed.

The sound of gunshots and wall breaking had interrupted the busy work of the shipyard. Many black spine insects put down their cutting work and gathered outside the shipyard.

The second-level awakened ones raised their shotguns and launched an attack, followed by the soldiers behind them.

In order to complete the killing and awakening of the enhanced person as soon as possible, Shen Jie instructed the legion team to only target the limbs and lower abdomen of the black spine worm, not the head, and just seriously injure it.

The final killing mission is handed over to the new recruits.

To deal with ordinary black spine worms, five second-level legion members can take care of them. Shen Jie then came to Lin Feng.

At this moment, Lin Feng stood next to the deep pit in the center of the shipyard, staring at the hole at his feet that was submerged in the river.

The diameter of the entire wormhole reaches twenty meters, which is far larger than the size of ordinary ground wormholes and can allow the entry and exit of second-order tiger spine insects.

The red beetles who were responsible for the transportation before put the cut small pieces of special steel into it.

The water rich in metal minerals is much denser than air, and the falling speed of the special steel blocks inside will be greatly reduced.

But the red beetle did not penetrate the well in front of me.

Lin Feng slowly squatted down and put his hand into the mouth of the hole.

Sure enough, the water in the cave well was hot.

And it gets hotter as you go down.

Therefore, the Zerg are not collecting and transporting special steel, but directly using local materials to build a biological furnace that can synthesize the giant jaws of the second-order tiger spine insect.

The endless flowing water of the large river a few hundred meters away is the best coolant for high-temperature forging furnaces.

Through telepathy, Lin Feng noticed that there was a huge light source two hundred meters deep inside the cave.

It was a living biological furnace, containing thousands of life points of energy.

Comparable to a high-level life form!

But it has no ability to think, let alone move.

Depending on the situation, the possibility of the existence of second-order insect eggs is very small, but there should be a lot of forged orange-quality giant jaws.

Lin Feng thought for a while, raised his head and looked around, and finally found a steel cable as thick as an arm from nearby. It was about two hundred meters long. One end was handed over to Shen Jie and tied to the crane, and the other end was tied around his waist.

Then he jumped into the cave.

The surface water temperature is about forty or fifty degrees.

Ordinary people can easily withstand it, but as the depth of the dive increases, the temperature suddenly rises to 70 or 80 degrees.

This temperature can already burn the protein until it is denatured, the peptide bonds are broken, and finally the meat is cooked.

Lin Feng's eyes could see the steaming heat waves rising upward through his visor, exchanging heat with the cold water in the hole above.

At this moment, he had dived sixty or seventy meters deep and could not clearly see the dark abyss under his feet, and the temperature of the nearby well water was getting higher and higher.

At 70 or 80 degrees, even a first-level awakened person cannot withstand it for long. When the water reaches a depth of more than 100 meters, Lin Feng will still be scalded by the boiling water waves even through the Flying Tiger Armor.

No wonder the Zerg dare to place the biological furnace in the open air.

Probably not afraid of being stolen by humans.

In the end, Lin Feng's footsteps stopped at a depth of 120 meters, with numerous boiling water bubbles floating nearby.

He tried to activate the flying tiger armor's absolute defense, but unfortunately it could isolate the energy shield from the extremely fast attack, but could not stop the slowly approaching hot water.

After canceling the mutant form of absolute defense, Lin Feng began to observe his surroundings with the help of weak light.

Then he discovered that the entire cave wall was covered with a layer of blackened coke.

That's the crust left behind after the biomass has been burned.

But it has excellent thermal insulation effect.

Even temperatures of thousands of degrees can be easily insulated.

Lin Feng could vaguely sense that there was biological activity behind the carbon black graphite layer nearby and under his feet.

The special steel blocks dropped by the red beetles were liquefied at high temperatures and then absorbed in the biological furnace at their feet, and combined with organic molecules to form a super-hard giant jaw.

But this carbonized layer that isolates high temperatures has a fatal flaw, that is, the higher the temperature, the more fragile the carbonized layer becomes.

Since he couldn't go deep into it to find out what was going on, Lin Feng planned to destroy the furnace directly and wait until the high-temperature reaction inside it was extinguished before exploring again.

Because compared to the second-order insect eggs, there is a shortage of orange-quality giant jaws.

At present, not only the Flying Tiger Armor has not been upgraded to the full level, but even the main equipment, the lv20 land cruiser, has not improved even half a step since the completion of the cross-level upgrade.

Tomorrow is the trading day agreed with the Queen Mother. The second batch of fifty second-level insect eggs is about to be obtained, and the battleship can finally be upgraded.

The matching fusion upgrade materials must also be obtained as soon as possible.

Thinking of this, Lin Feng no longer hesitated, pulled out the lv29 electromagnetic cannon on his waist, switched back to the armor-piercing shell mode, and then fired deeper under his feet.

The firing speed of the armor-piercing shell in the water was several times slower due to the friction of the rising water flow, and the high temperature heat wave nearby also gradually melted its warhead.

Several armor-piercing shells had not advanced 50 meters before they could only be annihilated outside the core furnace at the bottom due to the dissolution of the shell.

Even if a few could trigger the explosion, they were like a flash in the pan, and flashed by under the high temperature water waves.

In addition to illuminating the bottom space and stirring up more large boiling bubbles, it had no destructive power to the core furnace.

Seeing that he could not destroy the core of the bottom furnace, Lin Feng tried to calm himself down while sweating profusely.

Suddenly, he came up with a plan and turned to shoot wildly at the walls of the cave around him.

At a short distance, the armor-piercing shell successfully penetrated the carbonized layer, and then a violent explosion occurred in the cave wall.

The shock wave generated by the explosion raised a huge wave of water at the bottom of the cave, which surged up and pushed Lin Feng directly to the surface of the well.

As the wall collapsed, the rocks and sand inside fell into the bottom furnace mouth, not only covering the fleshy plug of the furnace mouth, but also isolating the high-temperature energy inside and continuing to spread to the outside world.

Unable to exchange heat and cold through water flow, the furnace is like a sealed pressure cooker, and as the temperature and pressure rise straight up, it continues to expand!

At this moment, Lin Feng has returned to the port of the cave with the help of Shen Jie. Before he has a firm foothold, he pulls Shen Jie and quickly moves away from the cave mouth.

Ten seconds later, a loud groaning sound came from the biological furnace at the bottom.

With a dull sound, the entire shipyard ground shook violently. With the 20-meter-wide hole as the center, the cement floor cracked instantly and quickly shattered in all directions like a spider web. The cracks were 20 to 30 centimeters wide and bottomless, and boiling water with hot steam kept surging and seeping up.

The clear water in the hole turned directly into black and yellow. As the furnace exploded violently with high pressure, a lot of dark red hot magma scattered out, like a ball of black mud blooming and polluting, causing countless black bubbles to float on the surface of the well.

When the bubbles burst, the irritating gas drifted and evaporated in the air.

Fortunately, Lin Feng had already taken Shen Jie back to the dock, and at this moment, the second-level legion team had also led more than a hundred soldiers to clear the Zerg in the shipyard.

They were guarding the gate of the shipyard, blocking a large number of black-spine worms coming from the city to support.

The sound of the shotgun explosion was endless.

But as the furnace inside the cave exploded, it triggered an earthquake and collapse, and both the Zerg and the soldiers stopped fighting.

Only to hear another creepy sound of collapse.

The damage of the underwater explosion is divided into two parts. The first is the shock wave and vacuum bubble that spread out at the beginning of the explosion. When these effects gradually dissipate, the explosion center of the vacuum will shrink back madly due to the pressure.

Produce two stages of damage, first push and then pull!

So the dock of the shipyard near the river was directly broken into pieces and sank into the water.

Like a collapsed dam, the river water began to flow back madly, extinguishing the high temperature boiling in the cave.

And the filling of the river water temporarily slowed down the successive collapses near the dock.

Even Lin Feng couldn't help swallowing his saliva when he saw the terrifying explosion effect that directly changed the terrain.

The high-pressure explosion of the furnace core directly destroyed half of the shipyard, an area of ​​more than two square kilometers, and it started from two hundred meters underground...

This power is comparable to the effect of a nuclear bomb with a TNT equivalent of 100,000 tons exploding underground!

It can even kill a high-level queen mother instantly!

No wonder the queen mother here wants to set up the biological reaction device for melting the giant jaws by the river.

To avoid a devastating blow to itself and the entire swarm after an accident.

And with the damage to the furnace core, the black spine swarm that came to rescue, as if receiving the order of the queen mother, began to retreat to the city and hide.

Lin Feng, who came to see this scene, frowned slightly.

"Don't chase, clean up the battlefield at the dock first, and collect useful biological materials."

"Without the protection provided by the tank, and lacking the experience of street fighting, rushing into the city is to die."

The five second-level awakeners nodded and agreed.

Last time in Jiacheng, Lin Feng was careless and was chased and intercepted by the black-spine insect swarm. Most of the hundred soldiers this time were not even first-level awakeners, and they could not resist the crazy attack of the insect swarm in the street fighting.

Especially some of the new recruits among them could not even withstand the recoil of the shotgun for a few times. They often had to relieve their shoulders that were severely worn after firing a few rounds in a row.

After ordering everyone to clean up the battlefield, Lin Feng asked the second-level legion team to stay in place to guard against the Zerg sneak attack, and then took Shen Jie and dozens of ordinary soldiers back to the broken and collapsed dock.

The aftermath of the explosion gradually dissipated.

A deep pit with a diameter of 100 meters was left behind.

Under the scouring of the river water, the surging black mud and the boiling hot water had disappeared.

Now it is necessary to send people to dive into the water, drill to the bottom, and look for the orange-quality giant jaws cast in the furnace.

Lin Feng estimated that there should be quite a few.

Then he sent people to collect the steel cables from the nearby dock, tied them into a long rope of several hundred meters, and tied it around his waist.

These steel wire cables, as thick as arms, can easily lift 30 to 40 tons.

Lin Feng and Shen Jie jumped into the water.

With the protection of the Flying Tiger Armor and the Wing Tiger Berserker Form, the two did not have to worry about being attacked by the Zerg. As long as the exploded furnace cooled down, they could move freely.

Soon, Lin Feng came to the original core. The water temperature nearby was still 40 to 50 degrees, but this did not affect the two of them. They began to move away the rubble covering the furnace.

When the area near the cave entrance was cleaned up, there was a thick layer of metal cooling blocks under the broken fleshy furnace shell. Its material was very close to the giant jaw, but it was still a little worse in plasticity.

Lin Feng touched it and a prompt flashed in front of his eyes:

"Zerg giant jaw—unfinished body, orange quality"

"Note: Can be used as a material to add to the synthesis upgrade"

Unexpectedly, this large piece of semi-finished product weighing more than ten tons was still useful. Lin Feng immediately tied the steel cable around his waist to the iron block.

After confirming that it was firm, he pulled it hard.

The soldiers at the port received the signal and began to use all their strength to drag the objects tied with steel cables ashore.

As the large semi-finished products were removed, another small sunken hole appeared below them.

The two of them worked together to dig up the buried hole.

The next moment, a small tunnel connected to the deep underground appeared in front of Lin Feng.

The diameter was only three meters. It should be a conveying pipeline connected to the bottom of the furnace to fine-process the biometal that was initially liquefied.

The two stretched out their hands to gesture and then drilled into it.

Lin Feng walked in front, stepping on the solidified residual liquid under his feet, and then he found that the walls of the tunnel were all cast with giant jaws. No wonder they could withstand the impact of the explosion. Except for cracks and water seepage, there was no major damage.

The two walked a few hundred meters away, one in front and one behind. The river water that had seeped in from nearby gradually disappeared, leaving only the cooling metal liquid remaining near the soles of their feet.

According to the direction of the movement, it is estimated that they have entered the lower part of the county town.

Lin Feng used telepathy to detect a large insect nest under his feet.

Near the pipeline, there were traces of red beetles' activities. They drilled into it and took away the biological metal liquid that flowed in to complete the final synthesis process of the second-level tiger spine insect's giant jaw.

Following the traces, the two finally poked their bodies out of a hole. Lin Feng held the electromagnetic gun in one hand and the tiger tooth chain saw sword in the other hand...

Using the flight mode, he landed steadily while the flying tiger armor on his body released the power of tiger insects, scaring off the black spine insects and red beetles approaching.

Shen Jie followed closely with a steel cable.

This insect nest was slightly different from the last time the two entered the underground of Wucheng East District.

The walls of the insect nest were full of unknown fungi emitting faint green fluorescence. The light illuminated the dim cave, allowing Lin Feng and the others to barely see the situation in the cave.

Deep in the insect nest, there stood a giant fleshy wall. It had no obvious head features in its hands, and was more like a group of infinitely proliferating brown-red tumors.

Lin Feng narrowed his eyes slightly. This thing should be the biological factory where the Zerg produces the second-order giant jaws!

Just like the previous biological furnace, they are all living organisms!

Then he took Shen Jie with him, and the two of them cut the meat mountain in front of them together.

With the knife in hand, the tiger-toothed chain saw sword in Lin Feng's hand and the bone blades on Shen Jie's arms encountered a hard object to block them.

The two pulled it out, and it was the orange-quality giant jaws that were born through organic synthesis by the red beetle into the metal liquid block.

One, two, three...

In the end, a total of 28 were found, equivalent to 14 pairs of giant jaws.

Enough to assemble a second-order tiger spine worm swarm.

In Lin Feng's opinion, this should only be the synthesis volume of one or two days. With the cutting and transportation speed of the shipyard, the giant jaws must have produced hundreds or thousands.

Enough for the queen mother to hatch the second-order tiger spine worms.

The queen mother here is also preparing in advance for the future Taihu War.

While crushing the pile of rotten meat in front of him, Lin Feng's telepathy in his mind sent feedback, showing that a large number of tiger spine insects were rushing over not far away.

Without time to think about it, Lin Feng ordered Shen Jie to work together to tie these giant jaws with steel cables and stuff them into the channel for transporting metal liquid blocks. The size was just right.

Lin Feng raised the electromagnetic gun and fired wildly at the entrance of the insect nest in the distance, causing the cave wall to collapse, burying the entrance and exit, and blocking the second-level Zergs who came to support.

Judging from the situation, this second-level queen has not yet entered the middle stage of the third level, so there are no new second-level Zergs under her command.

But the most urgent task at the moment is to take away the giant jaw materials.

In order to prevent the tunnel from being destroyed and finally sinking deeper and deeper.

With the skills of the two, it is definitely no problem to kill out, but to drag away this pile of biological materials, it is basically impossible without the cover and cooperation of the second-level legion!

Fortunately, Shen Jie acted quickly. After Lin Feng blocked the entrance with a gun, he also came to help. It only took a few minutes to stuff all the giant jaws into the channel.

Shen Jie walked in front, pulling the steel cable, while Lin Feng was in charge of the rear, pushing forward with all his might.

Nearly a hundred tons of force pushed these giant jaws forward in a small tunnel of five or six hundred meters long, with difficulty.

The roar of tiger spine worms came from behind, constantly destroying the outer shell of the tunnel wall, only a few dozen meters away from Lin Feng.

Fortunately, due to the explosion in front, water kept seeping in, and the water flow reduced friction resistance. Not long after, the two of them successfully arrived at the entrance under the furnace.

Shen Jie tied the giant jaws with nearby steel cables and sent them to the waterside one by one.

In the end, only the angry roar of the second-level tiger spine worms came from the depths of the cave.

After getting the second-order giant jaw without any danger, Lin Feng sat beside the collapsed deep pit and breathed a sigh of relief.

Now he just had to wait for the evening when Chen Yanyan would control the fleet to come to pick him up.

After resting, Lin Feng walked into the dock.

The big ship under construction inside looked like a warship, but unfortunately most of it had been cut off by the Zerg, leaving only the bottom of the ship, which weighed only a hundred tons.

During the search, the Zerg retreating into the city sent a small group of black-spine insects to feint several times from both sides, and also sent more than a dozen first-order green-winged insects to observe the current situation of the shipyard.

These spies were easily repelled by the soldiers, and Lin Feng was interested in using the Eye of Death to snipe the green-winged insects in the sky.

Then let Shen Jie lead people to take their bodies back to the account.

After failing to steal the chicken and losing the rice, these Zergs stopped trying.

However, the second-order tiger-spine insects have been missing.

It is estimated that they sensed Lin Feng's presence.

Or maybe the Queen Mother of Haicheng sent it a warning.

…………

As the sun set, when Chen Yanyan led the fleet to meet them and crossed the bridge, she brought Lin Feng an unexpected message:

"There is a woman named Ling Shuyan, who claims to be the director of the Jincheng Biological Research Institute, and came to discuss something with you."

"She came all the way from Jincheng. Is it related to your visit to Professor Ding in Laoshan Park last time?"

Lin Feng's mouth curled up slightly, watching the soldiers carrying the giant jaws into the storage space behind the warship, and then told them that he planned to recruit researchers to transform the second-level legion.

Chen Yanyan frowned slightly:

"I don't think that woman is a good person."

"Let them go to the field hospital to help first, and said you will be back later."

Lin Feng nodded, left the warship and went to the dock, and integrated the remaining materials of the warship's shell into the black-spine insect giant jaws and blue-winged insect membrane wings collected by everyone, and synthesized a total of twelve flying winged tank replicas.

As for the remaining materials in the warehouse, they were all copied into level 19 shotguns, and some were integrated into the tanks.

When the fleet was ready to return, it already had 20 tanks as auxiliary ships, and the overall scale was doubled.

Such firepower can easily suppress the charge of tens of thousands of Zerg troops.

When everything was packed up, including the survivors on the opposite side, they also boarded the tanks...

In the afterglow of the sunset, Lin Feng stood at the bow and issued a return order:

"I haven't seen the real person in reality yet, let's go back and meet this Ling Shuyan."