Ye Fei understood the meaning of Xiang Hai's words, and couldn't help but be silent for a while.

After saying these words, Xiang Hai let out a long sigh, trapped in the deepest part of the forward base, and any decision could send the surviving warriors to a desperate situation.

Ye Fei took a regiment of commandos to find a refuge, and he was finally able to unload the burden on his shoulders, but unfortunately the sacrificed comrades could never come back to life.

Ye Fei patted Xiang Hai's shoulder and strode towards the outside of the shelter: "Call the saber, please answer when you hear it." ”

"I'm a saber, please."

"Move closer to me immediately and stay safe along the way."

"Yes!"

"Black bear, monkey, pick up the second brigade, prepare to retreat into the shelter."

"Yes!" The two replied in unison.

I don't know if it was the previous battles that scared the Outer Skeleton Man, Sabre and his second brigade did not encounter any resistance, and all the way to the shelter without hindrance, and then the whole regiment gradually withdrew.

The shelter was set up for emergencies and stockpiled enough supplies to support more than a thousand people living together on the entire base for more than three months. The original survivors in the shelter plus all the commandos brought by Ye Fei were only in their early four hundreds, so there was no pressure on the shelter.

The warriors who retreated into the shelter watched the heavy gate gradually close, and many of them had the same feeling that a large stone had fallen on their hearts.

It's finally safe.

After hearing the order to disband, the fighters went in groups of three and five, each looking for a place to sit and rest, and several battleship soldiers put down their heavy rifles. I ran diligently to bring a lot of food and water.

"Commander, this place is usually the dormitory area of the soldiers, and now ...... Now that there are empty rooms, why bother everyone to stay here? Xiang Hai found Ye Fei and suggested softly.

"No, I'm not too tired." Ye Fei rejected his kindness, "It just so happens that I'm still looking for you, have the military doctors at the base withdrawn?" ”

A military doctor is a technical rank, and even if he is a general, he cannot become the supreme commander of a combat unit when fighting. Normally, the minimum rank of a military doctor must be a lieutenant, and Xiang Hai said before that he was the highest rank of all the soldiers. Ye Fei couldn't determine if the military doctor at the base had withdrawn into the shelter.

"Withdrawal is withdrawal in. It was after he was seriously wounded that the soldiers forced him in. ”

Ye Fei's heart trembled: "Who treated the wounded?" ”

"There are also two hygienists, and the wounds of the wounded have been treated." Xiang Hai said, "There are too many wounded. Except for a few people with me to stay here. Everyone else followed the hygienist to take care of the wounded...... Head. Do you see if it's ......?"

"No problem." Ye Fei agreed without hesitation, and then shouted, "Officers above the squadron." Come and meet me! ”

More than a dozen officers, including the three captains, quickly ran over, and Ye Fei beckoned everyone to his side: "Immediately dispatch all the hygienists in the team, Xiang Hai, I will hand over all these satellite crews to you, and you will arrange for them to take care of the wounded." ”

"Yes!" Xiang Hai replied loudly.

According to the custom of the commandos, each detachment has at least one hygienist who has undergone rigorous training, and there are at least 27 hygienists in the 27 detachments of the whole regiment.

The medical skills of these hygienists can only be said to be so-so, they can't see major problems, headaches, colds, bloating diarrhea and other minor problems are okay, and the only thing they are good at is dealing with trauma.

The officers who received the order immediately went back to make arrangements, and many members of the team took the initiative to stand up to help—the commando team is multi-skilled, and although they do not hold the position of hygienists, they are also familiar with the business of hygienists.

If care is not taken care of, the seriously injured who should not be sacrificed are likely to be sacrificed.

The black bear smacked his lips and sighed for a long time: "That's good, take away a squadron and a half at once." Boss, we've found the people, what's next? Rushing out of the same way? ”

"Is it possible?" Scissors' gaze swept over the remains of the martyrs on the side, "We can not take the sacrificed, but which of the wounded can be left behind?" What about the more than 200 wounded, can half of the slightly injured walk? If we want to take everyone away, we have to carry one by one, and carry a big living person, how can this battle be fought? ”

"When have you been complaining about this, hurry up and find a way." Ye Fei rebuked in annoyance.

The saber, who had not spoken, hugged the rifle and said: "Unless we kill all the Outer Bone People in the base, but now it is the Outer Bone People who have air supremacy, I'm afraid that before we clean up the outside, the enemy's reinforcements will arrive...... When will the fleet be able to drive away these enemy ships? ”

"Don't count on it for a while." The black bear said dejectedly, "This place, if only I could get in touch with the headquarters." Otherwise, it would be impossible for us to take everyone out of the city. ”

Ye Fei was suddenly stunned: "Black bear, don't you say that I haven't remembered it yet, the connection between the fleet and the base has long been broken, how can the headquarters be sure that there are survivors in the base?" ”

For a while, several people were stunned, and no one could say why.

"Monkey, you go and call Xiang Hai." Ye Fei commanded.

"Great!" The monkey said yes and ran away.

Ye Fei hadn't had time to tell Xiang Hai about the communication frequency, and the radio couldn't call people at all, otherwise there was no need to trouble the monkey to run.

Soon Xiang Hai rushed over, and after listening to Ye Fei's question, he replied: "There is an antenna leading to the surface of the asteroid here, which can send communication signals to the outside world, but we do not have a high-power radio, the effective distance of communication is very short, and the battleship must be near the base to receive the signal." ”

Ye Fei's eyes lit up: "Let's go, take me to see." "How can you find a few team members who are good at modifying electronic equipment, and if the power is not enough, the power will not be over!

Xiang Hai took Ye Fei to a small room near the lobby, there was an inconspicuous metal rod on the wall, if Xiang Hai hadn't pointed it out, absolutely no one would have guessed that this thing was actually an antenna.

Ye Fei immediately found a soldier who knew some electronic knowledge, and simply tinkered for a while: "Report to the regiment leader, it's okay." ”

"So fast?" Ye Fei was very surprised.

"Captain, there's no electronic components here. There's a limit to what I can do, and it's not necessarily really useful. The warrior said.

"Okay, you can rest first, I'll try." Ye Fei nodded, "Headquarters headquarters, I'm Ye Fei, please answer when you hear it, please answer when you hear it." ”

The radio was full of rustling noises, and several people gathered together to call in turn, waiting patiently.

"Ye Fei. I'm Lu Jian. Finally got an answer on the radio.

"Report to the commander. We have already found the survivors in the base......" Ye Fei briefly introduced the situation, "Commander, it is impossible for us to take everyone out of the city. When will the fleet clean up the alien fleet? ”

"Don't you want me?" Lu Jian said angrily. "The outer skeleton man doesn't know what kind of wind is pumping. Now entrenched above the base, no matter how tempting you are, you will not fail to move the place. ”

Ye Fei listened to a piece of music: "Commander." What a good target this is? "The biological warship has insufficient range and honestly shrinks above the base without moving, isn't that looking for abuse?

"How can it be so simple?" Lu Jian sighed lightly, "The first floor of the base is too big, and many enemy ships have penetrated into the base, even if you kill all the outside, you will have to be trapped inside." ”

Ye Fei was speechless for a moment.

There are not many means for the expeditionary force to clean up the biological warships, although they are all effective, but no matter which method, the attack on the enemy ships that retreat into the forward base will inevitably affect the upper echelons of the base, and these hundreds of people will have to be buried alive at that time.

What can I do?

Ye Fei suddenly made a difficulty.

"Don't worry about this for now, anyway, there is no shortage of food and drink in the base, you can stay inside for a while, and then talk about it when you figure out a way." Lu Jian commanded.

"Commander, our commandos can defend it, but there are dozens of seriously wounded people in the shelter!" Ye Fei complained, "I can't get effective treatment anymore...... They're in danger. ”

In addition, the artificial environment on the sixteenth floor is similar to the natural environment, hundreds of corpses are placed there, one day or two days, three days or five days, and the corpses must begin to decompose.

They had already lost their lives, and Ye Fei couldn't watch the bodies of these martyrs lying there.

Lu Jian scratched his head for a while, Ye Fei could be regarded as giving him a big problem.

Although the expeditionary force has never stopped the attack on the alien fleet, and the limited space on the first floor of the base can only enter a small number of enemy ships, the outer skeleton man put on a posture of a dead pig that is not afraid of boiling water, and would rather be beaten than leave.

After the destruction of the biological warships on the surface of the alien fleet, an effective layer of protection against the wreckage was formed, so that the effective number of wrecks of the expeditionary force plummeted.

If the expeditionary force were to carry out a vertical strike, it would definitely destroy the superstructure of the base. The fleet had to lower its altitude to strike at the enemy horizontally, and in order to increase accuracy, it had to close the distance, otherwise the slightest mistake would damage the base.

Lu Jian is not afraid that the enemy army will be stunned, if there is only this one enemy army, it will be over if everyone consumes it together. Once the bone mound sends reinforcements, in order to avoid being attacked by the enemy, the expedition will inevitably have to evacuate here, and not only will the survivors in the base not be able to get out, but they may also have to catch a regiment of commandos.

Abandoning the wounded would almost be able to withdraw the assault team, but in the whole army, what commander would dare to give such a bastard order? Don't you want to live and want to go to court-martial?

Lu Jian didn't reply for a long time, and Ye Fei's heart was like falling into the abyss.

"If only there was a way to avoid the outer skeleton above." The black bear muttered dissatisfiedly, "Hey, I said to the sea, this base didn't dig a tunnel for escaping or something?" ”

"As far as I know, no." Xiang Hai answered honestly.

"Who designed this base? I don't even understand the truth of the three holes of the cunning rabbit. The black bear complained dissatisfiedly, how good it would be if there was a passage to the surface of the asteroid?

The black bear still complained endlessly, and Ye Fei suddenly reported to the black bear: "Old bear, you are really a genius!" ”

"What?" The black bear was stunned for a moment, "Boss, what do you mean?" ”

"It's literal." Ye Fei's face flushed excitedly, "Headquarters headquarters, please answer if you receive it." ”

"I'm Lu Jian, please speak."

"Commander, I have a way!" Ye Fei smashed two punches into the black bear's chest, venting his joy.

Lu Jian was confused by Ye Fei: "What way?" ”

"Isn't the alien fleet all shrunk at the entrance to the base?"

"yes, what?" Lu Jian was anxious to listen to Ye Fei's thoughts, and urged impatiently. "If you have anything to say, say it quickly."

Ye Fei suppressed his excitement and tried his best to sort out his thoughts: "Commander, the maximum diameter of this asteroid is only 400 kilometers, and the sixteenth floor of the base is underground...... Hmmm......"

"Nineteen kilometers." Xiang Hai hurriedly added.

"Yes, nineteen kilometers!" Ye Fei rushed to the sea and stretched out his thumb, "There are exoskeleton people on the front, then let's just ignore them, and directly dig a deep well on the back of the asteroid that leads directly to the sixteenth floor of the base, as long as we find a good location." It doesn't take more than 300 kilometers to penetrate an asteroid. It won't take long at all......"

"Good way!" Lu Jian was overjoyed, "Just do what you say, Ye Fei, you must be prepared." Keep in touch with the fleet. Once the passage is opened. Evacuate the base now! Dog's outer bone mongrel, look at this time Lao Tzu doesn't give you some color! ”

The dead knot in his heart was suddenly untied, and Commander Lu didn't care about his image at all. Yelling to issue new orders.

The minimum diameter of the asteroid is also more than 200 kilometers, and the shrinking alien fleet is shrunk together, and it can occupy dozens of kilometers of territory, even if the ancestors of the outer bone people have burned high incense, how can they still take care of the back side of the asteroid?

The Yangtze River, which got the news, immediately asked for battle, but was directly vetoed by Lu Jian.

The commandos on the Yangtze River are all trapped in the base, how can they draw out the manpower for construction? Besides, there is only one drilling well on the assault ship, but in order to collect mineral deposits on asteroids, there are similar engineering ships, which are long and dare not say, and the passage of hundreds of kilometers is not challenging at all.

The Liuzhou engineering ship hidden in the asteroid belt immediately received the order to attack, and Colonel Liu Hongye, who had been in logistics since he was a soldier, never thought that he would also receive an order to participate in the war with the engineering ship, and his two eyes almost did not mutate into a bright light bulb.

A soldier who doesn't want to be a general is not a good soldier, and who dares to sign up for the expeditionary force, who doesn't want to slaughter a few outer bones with his own hands to make a contribution? This time it was a feat!

The Liuzhou drove out of the asteroid belt at full speed, and it took only half an hour to orbit the far side of the asteroid.

All the data on the asteroid was stored in the battleship's computer, and several engineers worked together to figure out the best place to make a hole.

The 16-kilometer-long battleship flew to the predetermined place and, under the careful control of the maneuvers, landed slowly and accurately with accuracy.

The surface of the asteroid is uneven, and the battleship cannot land at all, but the engineering ship is worthy of being a professional player, and when it is suspended at a distance of tens of meters above the asteroid, several telescopic landing gears poke out from under the battleship, and the length of the landing gear is automatically adjusted after landing, directly placing the battleship in the air at a height of hundreds of meters.

Then the engineers determined the position and angle of the excavation, and the drilling engineering module under the belly of the ship was opened, and the huge laser drill bit fell from the cabin, and the shining laser cut into the asteroid like a precise scalpel...... It is still a minimally invasive technique.

The assault ship is equipped with a drill boat, it doesn't take long to recharge, the Liuzhou doesn't need to be so troublesome at all, the fourteen fusion reactors provide plenty of food for the powerful electric tiger of the laser drill, the drill bit is constantly vaporizing the rock underground, and the hot steam is sprayed hundreds of meters high, almost spraying into the engineering cabin.

The drill bit can drill into about one meter per second, which is already very fast, but at this speed, it can only penetrate more than 80 kilometers of rock formation in 24 hours, and it takes three days to completely drill through the asteroid.

Lu Jian was in a hurry, and Liu Hongye was even more furious, urging the drilling team to speed up, and the drilling team had no choice but to speed up by increasing the power, and the speed of excavation was immediately increased by three times.

The consumption of electricity has increased fivefold at once, the service life of the drill bit has been reduced by at least more than half, and the drill team leader does not even dare to guarantee whether the drill bit will last until it penetrates the asteroid.

But it's important to save people, it's just a drill bit, Lu Jian doesn't care, Liu Hongye doesn't care even more, there is more than one drill bit, and it is burned and replaced with a new one, not to mention that there is no shortage of engineers on the engineering ship, and it is not a joke that even a broken drill bit cannot be repaired?

Now all you have to do is to grab time with the reinforcements of the Outer Skeleton!

In order to paralyze the Outer Skeleton Man, the main force still maintained fire suppression on the enemy forces entrenched above the base, and the only one accompanying the Liuzhou on the back side of the asteroid was the Yangtze River, which had not joined the suppression battle.

The Yangtze River also has another mission, which is to monitor the bone mound that flew away.

Time passes little by little, a kilometer, two kilometers, five kilometers, ten kilometers...... The caving continued to grow, and Lu Jian's worries became stronger and stronger.

The first half of drilling is easy to do, no matter how small the gravity of the asteroid is, there is gravity, and it is completely possible to rely on gravity to control the descent of the drill bit, but the closer the drill bit is to the center of mass of the asteroid, the smaller the gravity acting on the drill bit, and theoretically when it reaches the center of mass, it will be completely weightless, and the drill bit cannot continue to drill to the other side of the asteroid.

In order to solve this problem, the engineers on the Liuzhou temporarily built a drill rig with a diameter slightly smaller than that of the caving drill, placed the spare laser drill bit on the head of the drill rig, and directly replaced the ordinary drill bit with the drill drill to continue drilling.

In order to build the finished drill as soon as possible, the engineers omitted all the systems that could be omitted, and directly built a cylinder with thick telescopic gears on four walls, and there was a signal receiver in the cylinder, and the only signals that could be identified were forward and backward and adjusted the direction, which could not be simpler. To put it figuratively, a remote-controlled unmanned vehicle that can grasp the four walls of the cavern is added behind the drill bit, and the tail of the drill is connected to a thick and long cable from the Liuzhou, which looks like a king-sized odd-shaped spindle.

Fortunately, the reinforcements of the Outer Bone Man did not appear as expected, and a day later, the control cave successfully approached the sixteenth floor of the base, and was able to break through the rearmost barrier at any time.

Lu Jian, who got the news, breathed a sigh of relief and immediately established contact with the shelter: "Base base, headquarters call!" ”

Ye Fei perked up: "Headquarters headquarters, I am Ye Fei, please speak." (To be continued......)

PS: Ask for subscriptions, ask for tickets!