In a very short period of time, Liu Fei made a difficult choice.

He must eliminate as many xenomorphs as possible in their reproductive period to avoid an explosive increase in the number of xenomorphs.

Theoretically speaking, Liu Fei's choice was correct, after all, killing an alien in the reproductive period now is equivalent to killing at least five or more small aliens.

Undoubtedly, this is a very cost-effective decision.

However, this is only theoretically speaking, and the practical operation is very difficult, after all, Liu Fei is now only one person fighting.

In fact, Liu Fei had no choice, if the aliens were allowed to multiply in large numbers, no one in the underground modification market would be able to survive. At present, the surviving people in the tuning market are not just waiting for rescue, if everyone is waiting to die, when a large number of aliens are bred out, the tuning factory will be unable to defend itself, and a huge number of small aliens will penetrate everywhere like mercury.

Even if the modification plant is defensible enough, because there is no adequate preparation, food and water cannot be held for a long time, and energy is also a big problem.

Fighting became Liu Fei's only choice.

Liu Fei is a person who pays attention to efficiency, he knows very well that every minute, there will be countless small aliens born, and after making a decision, he immediately goes into battle.

Turn on the self-check system, and the crescent has been completely repaired. Liu Fei, who was sitting in the cockpit of the crescent moon, looked at the data on the dashboard, and couldn't help but marvel at the strength of the crescent moon again.

After half an hour of high-intensity fighting, the loss of energy was less than ten percent. It can be seen that both the energy-saving mode of the crescent moon and the storage capacity of the energy cten are very advanced.

"Half an hour!"

Liu Fei threw a sentence at the sluggish people, closed the cockpit, and the crescent moon plunged headlong into the metal passage without hesitation.

"He wants to kill all the aliens by himself?" After Xiao Qiao watched the crescent moon disappear, he was stunned for a long time before he could hold back a sentence.

"Actually, we don't have a choice." A wry smile appeared on Da Qiao's face. She had already seen the clue from the five-minute hologram, and naturally understood Liu Fei's decision.

"Why don't we join the fight? Don't we still have a lot of mechs! Little Joe set his eyes on a group of mercenaries.

Brother Leopard and a group of mercenaries glanced at each other, a wry smile on their faces. Little Joe made them a little embarrassed.

"Sister, the number of our mechs is too small for group battles, and if we let them fight, it will be tantamount to making them commit suicide. What's more, their mission is to protect us, not to fight the aliens. ”

"Horizontal and vertical is death, why not fight! Could it be that we just watched Liu Fei fight alone?! ”

Xiao Qiao shouted loudly, a group of mercenaries and the people of the Luo family all blushed, after all, it is not a glorious thing to shrink here.

"Miss, our Luo family is willing to gamble and lose, and is willing to take Miss as the leader, even if it is a soldier to the death." Luo Shao's eldest uncle wasted no time in showing his loyalty.

As Xiao Qiao said, horizontal and vertical is death, why not take this to be loyal to the Chen Gao family! In case they survive, the Luo family will complete a gorgeous transformation of a carp jumping over the dragon gate.

"Good! Good! If we can survive, count it as the greatest credit to your Luo family, hum! Don't be those mercenaries who are afraid of death! Come on—we'll make a deal for it now, and think of a way—" Little Joe was overjoyed, rolling his eyes at the group of mercenaries with a look of disdain.

A group of mercenaries were despised by Xiao Qiao, and their faces suddenly couldn't be hung up, and their expressions became ugly.

"Now we are in the same boat, we need to work together to tide over the difficulties together, the brothers discuss and discuss together, the contemptible surname is Luo, the name is Hui, I hope the brothers will look at it more." Luo Shao's eldest uncle can be described as an old man and a sleek person, so he naturally doesn't want to form a bond with a group of mercenaries, so he immediately gives a group of mercenaries a step.

With the steps of the Luo family patriarch, Brother Leopard also joined the discussion after getting Da Qiao's approval.

"Now, this is our location, in the center of the right wing of the entire tuning plant, about three hundred meters in a straight line near the test site, and more than a kilometer away from the two entrances and exits of the tuning market. In addition, at the back of this garbage mountain, there is a passage that leads directly to the modified market, so to speak, this is the only passage to the outside except for the two entrances and exits outside. ”

"It's a pity." Brother Leopard frowned and looked at the simulated holographic map. The hologram shows that the secret passage cannot be far from the modding market.

"It's not a pity, at least, we have a way out behind us. If the alien keeps corroding the steel gate, we can also strengthen the defense without stopping the inexhaustible steel. Da Qiao nodded slightly, she felt the sincerity in Luo Hui's words. Obviously, the passage he was talking about was a secret passage of the Luo family.

"Theoretically, the aliens will never be able to break through this mountain of steel garbage, but we don't have enough food and water, and I counted the remaining food and people just now, and according to the minimum quota, ours can only hold out for three days." Luo Hui smiled bitterly.

Three days!

The expressions on everyone's faces suddenly became grim.

If the food runs out after three days, then, without the aliens to break through here, they themselves will starve to death.

"Is there a way to contact the other people in the garbage mountain?" Looking at the holographic map, Da Qiao's heart moved, and now the people in the underground modification market are facing the same dilemma.

"No, we all use wireless signals and satellite connections, the signal tower of the garbage mountain has been destroyed by the alien, the satellites in space have also lost their function, and the only wireless communication system we can use now is the mecha's own communication system. However, because the garbage mountain is mainly composed of steel products and electronic components, it has strong interference, and it is difficult for the mecha to use in the internal space of the garbage mountain. What's more, if we turn on the mecha's communication system, it will also attract a crazy attack from the aliens, and then we will be exhausted to reinforce the steel gates. Luo Hui touched his chin and said.

Da Qiao showed a look of disappointment on his face.

Da Qiao's original intention was to contact all the people in the underground modification market, and there was an organized and planned attack on the alien, and this plan was in vain.

"Uncle, we have an optical path communication system." Luo Shao suddenly interjected.

"Optical intercom system?" Luo Hui was stunned, he was the patriarch of the Luo family, and he had never heard of the light path connection system in the garbage mountain. You must know that after human beings entered the interstellar age, the physical network basically disappeared, and the optical path system is a physical link, which is generally only used on individual flying objects and equipment, such as spaceships and mechas.

"It's been hundreds of years, it's a physical network established by the ancestors of our Luo family, I don't know if it's still useful."

"Hundreds of years—" Luo Hui showed a wry smile on his face.

Anyone with a modicum of physics knows that any matter will have a decay period, and although most people don't know how long the decay period of the optical path is, it is absolutely certain that it will not last for hundreds of years.

"We can try, maybe there will be a miracle." Big Joe said.

"You know where?" Luo Hui nodded and asked Luo Shao.

"Yes, it's right at your feet."

"Ah......h

――

Soon, everyone dug out a white pipe at Luo Hui's feet, and inside the pipe, there was a yellowed white hose, and inside, there was a bundle of optical cables.