When those flying monsters flew 400 meters above the border wall, a large number of soldiers looked up at the sky.

From the helmet eyepieces of the fourth generation of obsidian armor, you can see that they look frightened, confused, and uneasy, and everyone looks at the flying monsters that flew into the sky.

Hundreds of flying monsters, even if all of them fall on the border wall, it will be difficult to clean up the soldiers on the border wall, so there is no need to worry.

Downing was worried about what those flying monsters were about to spill in the sky!

In the next second, those monsters spilled a large amount of powder, and the powder floated in the air, and then fell to the border wall, the powder was colorless and odorless, like crystal sand.

Whatever it is, it's never going to be a good thing!

He reached out to touch the powder, and the sprinkling on his hands was no different from loess, because wearing Titan Type 1 armor, the touch was not very obvious.

But in the next second, the artificial intelligence Nami automatically activates and makes a sound.

"Toxic substances are detected, and the Titan 1 air filtration system is turned on. ”

As the sound came out, Tang Ning instantly understood the effect of these things, these powders have poison, once they enter the human body through the respiratory passage, they will cause harm to people, they are chemical weapons.

Titan 1 has an air filtration system, but the fourth-generation Obsidian armor does not have an air filtration system, and soldiers breathe using the pores built into the armor to ensure oxygen supply.

In this way, as long as the soldier breathes, the air outside the body will enter the armor respiratory system, and the toxic substances will also enter the respiratory tract, and finally cause serious injuries.

Although aware of the problem, Tang Ning couldn't do anything.

Because it is impossible for people not to breathe, especially these soldiers who need to fight, and need more oxygen after a lot of exercise.

At this point, he could only shout.

"Hold your breath. ”

Having said that, this is a drop in the bucket, and if you want to defend the border wall, you have to stay here for a long time, and you can't breathe for a long time.

As soon as he thought of this, Tang Ning looked at the hill monster that had begun to attack, gritted his teeth, and reminded him through the voice communication system.

"He-Man, immediately ordered, a large number of soldiers to withdraw from the border wall, ready to retreat. ”

He-Man, who heard the order, was curious about what the monsters had spilled, and after hearing the order, he was a little puzzled, and suddenly heard the young king solemnly emphasize once again, although he had great doubts in his heart, he could only give the order quickly.

"The commanders took note and ordered the soldiers to retreat, leave the border wall, remain in formation, and not allow riots. ”

A large number of soldiers were withdrawn from the border wall, and Downing, because he had an air filtration system, stayed on the wall and fired three electromagnetic shells into the sky.

Although the power of the electromagnetic cannonball is amazing, but those flying monsters in the air are scattered, and the three can't all be destroyed, and immediately after the launch, I saw the witch Lori Hannah walking anxiously over, looking puzzled.

"Why give the order to retreat, these things don't seem to hurt. ”

Lori Hannah held out her hand, showing off the small amount of powder that had been stained on her hand.

Downing glanced at it, the witch was not wearing armor, and her skin was in direct contact with this powder, and there was no problem, but it was impossible for Titan Type 1 to deceive himself, he could only say that this poison was chronic and would gradually attack in the future.

As for the specific powder information, we need to go back and do more detailed research.

At this thought, Tang Ning's face was solemn.

"Get out of here first, and I'll explain to you later. ”

As a large number of soldiers retreated, they got into trucks and drove away from the border wall, where some monsters could be seen rushing up to the city, letting out a low roar.

The border wall has been abandoned, and it will take another look to find the next best place to fight monsters.

Tang Ning was helpless.

Although he has received the help of the steampunk factory and has extremely powerful technology, the monster is not weak, it is much stronger than he expected, and it is not easy to win this battle.

The vehicle reached the nearest town in the early morning, and the soldiers were dejected.

The officials and people of the town came out to greet him, cheering, and Downing jumped out of the truck, and the mayor immediately greeted him, looking delighted.

"Your Majesty, welcome back in triumph, I have prepared a dinner for you. ”

Obviously, because of the propaganda of Fran's cabinet, it was believed that this time it was the Federal Empire that won the war, so the mayor of the town said this.

Tang Ning knew that the cabinet's propaganda lies would soon be exposed after the soldiers returned this time, and after sneering, he looked at the towering city walls of Grizzly Town, this is the closest town to Guo Jingqiang, according to the habit of monsters to attack any place with living creatures, the next monster's attack target is here, so the next battle location is here.

Returning to his senses, Tang Ning waved his hand.

"Immediately convene a meeting for officials to prepare for the relocation of the people here and for the people to take refuge in the city of Barbis. ”

After hearing this, the mayor was slightly stunned, and then immediately understood what was going on, and quickly turned around and ordered the officials who followed behind him.

If this is the next battlefield, ordinary people here will become a burden to the war, and they have to do it, which is also a helpless move, and it is much better than a large number of people dying in the process of fighting.

By noon, a large number of people had already begun to retreat.

Downing went to the witch's resting place, found Lori Hannah, and made sure that the witch had nothing to do for the time being.

"You'll have to pick someone to go back with me. ”

Lori Hannah turned her head and randomly found a witch to come over, and just as she was about to speak, black and red blood immediately flowed from her nostrils, she wiped it with her hand, and said helplessly: "Maybe it's too tired this time." ”

Tang Ning knew that things were not so simple, it must be because of the powder spilled by that monster, but he couldn't tell the truth at this time, otherwise it would cause unnecessary panic in the circle of soldiers.

After frowning, he quickly rushed back to the city of Barbis with the witch he had found.

An hour later, they returned to the city of Babis, and at this time, the people of Grizzly Town who had been relocated had not yet arrived, and the city of Babis was still very peaceful.

Downing took the witch straight into the steampunk factory, and when he arrived at the main console, he commanded the little robot.

"Now that the medical equipment is complete, you can help me test her for toxic substances and find a corresponding strategy. ”

After the order, he returned to his office and immediately called all the cabinet members.

After all the cabinet members arrived, Tang Ning looked serious.

"Fran, get ready to welcome the people who have migrated from Grizzly Town, carve out a place to keep these people alive, and when the war is over, they will return to Grizzly Town. ”

Hearing this, the cabinet members already know what is going on!

Everyone looked solemn and immediately did as instructed.

Downing sat in his office, thinking about the monster poison.

Now there are two ways to go, one is that the little robot can test for that poison and develop some kind of inhibition drug or vaccine, and the second way is to develop an air filtration system for all fourth-generation obsidian armor to become fifth-generation obsidian armor.

But the points ...... It is still a problem of the points gap, without points, the second way is empty talk.