Chapter 43： Anti-aircraft missile tower

The action of cleaning up the zombies went very smoothly, and at the same time Lin Yubai also gained a lot of resources, especially high-energy gas resources.

Crystal resources are supported by crystal mineral vein resources, and their daily income is about 2,000 points. Apart from the crystal resources needed to build the city wall every day, plus some Marines are trained every day, the crystal resources are basically enough.

The only thing missing is high-energy gas resources, which hasn't exceeded a hundred points so far.

This makes the number of siege tanks still one. Sometimes when two different teams call for artillery support, they will decide which team to give first based on the situation on both sides.

After the last special zombie was killed, Lin Yubai's high-energy gas stock reached two hundred.

At the same time, he heard the sound of the long-lost building unlocking in his mind.

[High-energy gas reaches 200 points, unlock the anti-aircraft missile tower]

You have to know that he is waiting every day, every day, waiting until his wife has gone to the ghost military academy, which I don’t know where.

The most important thing is that this naive system doesn't give any prompts. No, it's not until two hundred o'clock that the high-energy gas says to unlock it.

If I knew I would look for these monsters carrying high-energy gas resources everywhere to kill.

Tucao returned to Tucao, but seeing that the anti-aircraft missile tower was unlocked, Lin Yubai was still quite satisfied.

From the very beginning, Lin Yubai was anxious for his air defense firepower, but these things were not unlocked, so he was anxious.

Although the Marines have certain air defense capabilities, how can they be compared with professionalism?

The only thing I was grateful for was that I rarely encountered those flying monsters in the gray fog where I was, and I don't know if it was because they couldn't find the direction and didn't dare to fly, or for what reason.

Lin Yubai wanted to read the introduction of the anti-aircraft missile tower right away, but seeing that everyone here was waiting for his orders, he temporarily suppressed his excitement.

"Clean up the battlefield here, and then continue to build the wall, our progress has fallen a lot!"

The people who received the order immediately moved and threw the corpses of these zombies to the outside of the city wall. The scvs left a few to help clean up together, and the rest of the scvs continued to build the city wall.

"Commander, the city wall has been built more than half now, but our manpower is a bit short. Those walls that have been built need to be patrolled, otherwise they will always be broken by the monsters at night."

Zhang Jun was reporting something to Lin Yubai.

"I know this. I'm already calling people over. Don't worry too much. The main thing now is to enclose the city wall as soon as possible."

Lin Yubai nodded, and then looked around, beckoning Zhang Jun to keep up with him.

He is going to find out if there is a space channel around him. If this is uncertain, he is really a little uneasy.

It's okay to come to zombies now, if someday a powerful monster comes and rushes directly into the wall he built, then he will lose a lot.

After a round of inspections, the two found an abnormal situation less than two kilometers away from the city wall.

Above this clearing space, there are quite a few zombies, and there is a nearly transparent space channel, and it is slowly shrinking.

"Should this be just a temporary space channel?" Lin Yubai asked Zhang Jun a little uncertainly.

"Commander, I don't know this, but compared to the space channel we occupied, this does seem a bit unstable." Zhang Jun is also a bit uncertain, after all, it is the first time I see it, how to confirm this.

Lin Yubai was also a bit speechless, thinking that there was a bargain, but it was only a temporary one.

"Well, let's arrange personnel to guard this side, and wait until the fluctuations here have completely disappeared, and then let me know."

According to the shrinking speed of this space channel, it should disappear completely after one hour, and this one hour is a variable, so you have to watch it tightly.

After completing the explanation, he returned to the place where the city wall was being built. Only then did he have time to check the introduction of the anti-aircraft missile tower.

【Air Defense Missile Tower】

Construction cost: 100 crystal resources

Missile towers are one of the indispensable buildings of the human race. Without their existence, the entire base would face a huge threat.

It has a powerful air defense defense system that can automatically launch long-threaded missiles toward enemy air units that enter the range.

At the same time, the missile tower is also equipped with a scanner with ultra-high-sensitivity sensors. This scanner can detect and mark invisible units that are invisible to the naked eye. It can also detect units that have dived under the surface.

-do not move! I found you, I'll hit you again.

Lin Yubai looked at this introduction, there was no fluctuation on the surface, not only could it detect but also air defense, and only needed a hundred crystals...well...well, I can't make it up.

In short, it's so fragrant!

According to normal air defense missiles, medium-range air defense is 30-100 kilometers, and long-range air defense. Above 100 kilometers, my own air defense missile tower is equipped with a high-security level automatic tracking module. It's not a long-range air defense, there must be a mid-range.

Although it is very difficult to use radar to locate in this gray fog, he does not know whether others can detect in the gray fog, but his own marines can detect life sources within a certain range, with this ultra-high sensitivity The detector is here, no matter how far it is above 50 kilometers.

As for the monsters that exceed the distance, Lin Yubai himself doesn't want to provoke him. If he causes a big trouble, he will suffer.

It would be good to defend your own airspace, no matter what you do, Lin Yubai said to himself.

This side is also back on track, and there is no need to leave so many people here, Lin Yubai let them do the tasks with tasks, and return to the shelter without tasks.

He also has to go back and set up an anti-aircraft missile tower in his current shelter, just in case.

As for the other missile towers, when the city wall is completed, the gray fog in the city will dissipate before construction.

...

After being awakened by the roar of the siege tank, the survivors in the shelter looked outside.

The Marines in charge of vigilance did not take care of them either. The orders they received were only vigilance and did not say to restrict their freedom.

These survivors tried to get out of the building where they temporarily lived. After finding that there was no obstruction, many people ran out to see what happened.

After they went out, they saw a man with a different style of armor from the others, leading the others to fly out of the shelter, towards the place covered by gray mist.

Seeing such a big battle, these new survivors started to feel anxious about what had happened.