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

He must eliminate the aliens in the reproductive period as much as possible to avoid the explosive increase in the number of aliens.

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 small aliens.

Undoubtedly, this is a very cost-effective decision.

However, this is just theoretically speaking, the practical operation is very difficult. After all, Liu Fei is now fighting.

In fact, Liu Fei had no choice. If the aliens were allowed to reproduce in large quantities, no one would survive in the underground modification market. At present, the people who survived the modification market were not just waiting for rescue. If everyone was waiting to die, when a large number of aliens were reproduced, the modification factory would be unable to defend, and a large number of small aliens would penetrate every place like mercury.

Even if the modification factory is sufficiently defensive, because there is no sufficient preparation, food and water, it is impossible to stick to it for a long time, and energy is also a big problem.

Fighting became Liu Fei's only choice.

Liu Fei is a person who cares about efficiency. He knows very well that every minute, countless small aliens will be born. After making a decision, he will immediately go to fight.

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

After half an hour of high-intensity battle, the energy comb loss was less than 10%. It can be seen that both the energy saving mode of the Crescent and the storage capacity of the energy comb are very advanced.

"Half an hour!"

Liu Fei said a word to the dull people, closed the cockpit, and Crescent dived into the metal passage without hesitation.

"He wants to kill all the aliens by himself?" Xiao Qiao looked at the disappearance of the Crescent Moon and was stunned for a long time before he could put up a sentence.

"Actually, we have no choice." Da Qiao showed a wry smile on her face. She had already seen the clues from those five-minute holographic images, so she naturally understood Liu Fei's decision.

"Why don't we join the battle? Don't we have a lot of mechas!" Xiao Qiao's eyes fell on a group of mercenaries.

Brother Bao and a group of mercenaries looked at each other, and a wry smile appeared on their faces. Xiao Qiao made them feel a little embarrassed.

"Sister, our mechas are too small and not suitable for group battles. If they are allowed to participate in the battle, it is equivalent to letting them commit suicide. Moreover, their mission is to protect us, not to fight against aliens."

"Hongshu is dead, why not fight! Should we just watch Liu Fei fight alone?!"

Xiao Qiao shouted loudly, and the group of mercenaries and the Luo family members all turned red. After all, hiding here is not a glorious thing.

"Miss, our Luo family is willing to accept the loss and is willing to follow the lead of the young lady, even if it is fought, it will be spared." Mr. Luo's uncle seized the opportunity to show his loyalty.

As Xiao Qiao said, no matter how death is, why not use this to be loyal to the Chen Gao family! If you survive, the Luo family will complete a gorgeous transformation of a carp jumping over the dragon gate.

"Okay! OK! If we can survive, it will be the greatest contribution of your Luo family. Humph! Don't those mercenaries who are afraid of death! Come on - let's make a profit now, think of a solution--" Xiao Qiao was overjoyed, rolled his eyes at a group of mercenaries, and said with contempt.

A group of mercenaries were despised by Xiao Qiao, and their faces were no longer held back, and their expressions became ugly.

"Now we work together and need to work together to overcome difficulties. Brothers discuss with each other. My surname is Luo and his name is Hui. I hope my brothers will take a closer look." Mr. Luo's uncle is a sleek man, so he naturally does not want to make a gang of mercenaries and immediately lowers the ranks of mercenaries.

With the steps of the leader of the Luo family, Brother Bao also joined the discussion after receiving Da Qiao's approval.

"Now, this is our location, located in the center of the right wing of the entire modification factory, close to the test site, a straight line distance of about 300 meters, and the distance from the two entrances and exits of the modification market is more than one kilometer away. In addition, behind this garbage mountain, there is a passage that can directly lead to the modification market. It can be said that this is the only passage leading to the outside except for the two entrances and exits outside."

"What a pity." Brother Bao frowned and looked at the simulated holographic map. The holographic map showed that the secret passage could not be far away from the modification market.

"It's not a pity. At least, there is a way out behind us. If the alien shape constantly corrodes the steel gate, we can use inexhaustible steel to strengthen our defense." Da Qiao nodded slightly, and she felt sincerity from Luo Hui's words. Obviously, the passage he was talking about was a secret passage of the Luo family.

"Theoretically, the alien will never be able to break through this steel garbage mountain, but we don't have enough food and water. I just counted the remaining food and number of people. According to the minimum quota, ours can only last for three days." Luo Hui said with a wry smile.

Three days!

The expressions on everyone's faces suddenly became severe.

If the food is consumed in three days, then they will starve to death without the aliens breaking through the place.

"Is there any way to contact other people from the garbage mountains?" Looking at the holographic map, Da Qiao's heart moved. Now 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 aliens, and the satellites in space have also lost their functions. 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, and has strong interference, it is difficult to use the mecha's internal space in the Garbage Mountain. Moreover, if we turn on the mecha's communication system, it will also cause crazy attacks from the aliens. At that time, we will be exhausted to strengthen the steel gate." Luo Hui touched his chin and said.

A hint of disappointment appeared on Da Qiao's face.

Da Qiao's original intention was to contact everyone in the underground modification market to attack the alien in an organized and planned manner, and this plan was ruined.

"Uncle, we have an optical communication system." Mr. Luo suddenly interrupted.

"Optical Road Call System?" Luo Hui was stunned. He was the patriarch of the Luo family and had never heard of a light road connection system in the garbage mountain. You should know that after humans entered the interstellar era, the physical network was basically extinct, and the optical road system belongs to a physical link, and is generally only used on individual flying objects and equipment, such as spacecraft and mechas.

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

"Hundreds of years--" Luo Hui showed a bitter smile on his face.

Anyone with a little bit of physical knowledge knows that any substance will have a decay period. Although most people don’t know how long the decay period of the light path is, it is absolutely certain that it will not last for hundreds of years.

"We can try it, maybe a miracle will happen." Da Qiao said.

"Do you know where?" Luo Hui nodded and asked Mr. Luo.

"I know, it's at your feet."

"ah……"

——
Chapter completed!