"City Lord, where are we going now?" asked Optimist Xiaohan, who was standing at the door of the greenhouse.

She was much stronger than Li Yu had imagined. She saw Li Yu killing with her own eyes and was able to remain calm.

A trace of surprise flashed in Li Yu's eyes, but if you think about it carefully, you feel reasonable.

After all, Xiaohan followed Song Min before, and they experienced some things together, and even witnessed Song Min Lingchi Zhou Sheng with their own eyes.

"Let you go to the residential building opposite first, and find a place to stay first. When the situation is better, you can return to the inner city." Li Yu thought for a while and said to Xiaohan.

Then he glanced at Uncle San and nodded.

Push the door open.

After the two of them came out, he looked at the people in the greenhouse with cold eyes.

His eyes made the people inside frightened, as if they were falling into an ice cellar.

"Let's go!" Li Yu turned around and left.

The distance from the greenhouse to the residential building in the outer city was very close. Li Yu shone the searchlights, but he could still only see one or two meters away.

After walking two steps, I saw the lights on the opposite side and several figures came over.

Before Li Yu could speak, the person opposite him heard a voice: "Who are you?"

"It's me." Li Yu said loudly.

"It's the city lord."

"The city lord is out."

A series of discussion sounded across the street, accompanied by footsteps, and the faces of these people appeared in front of Li Yu.

"City Lord, we are about to go to the outer city wall now." He Chao, the leader, said happily after seeing Li Yu.

Li Yu nodded, then pointed to Xiaohan beside him and said to He Chao: "Send someone to send her to the residential building in the outer city."

"Okay, A Guang, you can send her in."

A Guang took the flashlight and walked to Xiaohan, then took her to the residential building in the outer city.

Looking at the two people leaving behind and disappearing into the thick fog, Li Yu nodded and continued to say to He Chao:

"When I just passed by the greenhouse, I heard that there was something happening in the greenhouse of the cooperative staff. You will send a message to Lao Luo later and ask him to take someone to look at the greenhouse."

"Ah? They dare to rebel?" He Chao was both angry and surprised.

He originally thought that killing so many people before would make these people afraid, but he didn't expect that there would be someone who dared to make trouble at this critical moment.

It seems that the killing is not ruthless enough.

Li Yu continued: "Those two arrogant people have been killed by me on the spot, but this matter must be thoroughly investigated."

As he said that, he walked towards the outer city wall.

There are large searchlights on the outer city walls, which can illuminate a hundred meters away.

However, in heavy fog weather, even the ground can't be exposed to thirty meters from the wall.

Li Yu and the others could only see the hazy lights on the ground.

He Chao frowned and followed Li Yu and Uncle San.

Step by step!

Up on the outer city wall.

Li Yu saw Yang Zhongshi standing next to the liquid nitrogen sprayer, wearing an oxygen mask and gloves, constantly spraying outside the city.

When liquid nitrogen was sprayed, it could be seen at a speed visible to the naked eye. The heavy fog outside the wall dissipated and a drizzle started.

The temperature of liquid nitrogen is very low and is very easy to evaporate. Spraying it in the air will rapidly expand and absorb a large amount of heat, causing the surrounding ambient temperature to drop sharply, and the water vapor in the air to quickly condense into rainwater.

Li Yu stood beside the wall, watching the drizzle outside the outer city wall, the liquid nitrogen was colorless and odorless, and formed such a wonderful scene in the heavy fog:

There is a small open space surrounded by thick clouds, with thick fog above and on both sides, but it is only light rain inside this area.

Like a dream.

With the illumination of searchlights, they can see the ground outside the wall while standing on the wall, and at the farthest they can see dozens or hundreds of meters.

After the liquid nitrogen is sprayed out, it drifts further away with the wind, but heavy fog continues to surge from all directions.

This is not a regional type of fog, and the coverage is extremely wide, so once the liquid nitrogen spray stops, the fog next to it will fill up.

"call--"

Li Yu saw the situation outside the wall. The fog had just started, and no zombies had come out of the base yet.

After all, they usually go in and out of the camphor tree base and see zombies easily.

Therefore, within five kilometers of the base of the camphor tree, there will be few zombies as long as there is no heavy rain.

"City Lord." Master Yang hurriedly said after seeing Li Yu with an oxygen mask.

In the outer city wall, because the liquid nitrogen sprayed out will blow to the wall, a blank area without thick fog is formed on the wall.

But these blank areas are a bit fantastic, only two or three meters high.

There was thick fog above.

It seems as if the sky is above the head, making people unable to help but stop and appreciate it.

Li Yu nodded to Master Yang, then walked straight to the duty room.

In the duty room.

The second uncle, Li Hang, Li Tie and others are here.

"Second uncle."

Li Yu pushed the door and said to his second uncle.

"Xiao Yu."

"City Lord."

"Big Brother."

He Chao, who came in the last time behind, quickly closed the door to prevent heavy fog from blowing in.

Heating is turned on in the duty room to dry the water vapor in the duty room.

Li Yu turned off the flashlight in his hand and said to Uncle Er:

“What’s going on now?”

The second uncle frowned and replied:

"This time the fog is coming with great force. Although liquid nitrogen is sprayed now, the effect is limited, and the scope it can cover is only around the spray area. The zombies have not arrived yet. I am afraid that when the zombies come, they will form a stack like when it rainstorms."

"Is liquid nitrogen still being produced?" Li Yu asked.

"I'm still in production, Kong Shuang is staring there." Uncle Er replied.

Li Yu thought about it and continued:

"In this way, you ask the fighters in the inner and outer city walls to extract half of the personnel to turn the liquid nitrogen sprayer and spray them all into the direction of the base. The base can't see anything now, and there will be problems with personnel allocation and transportation. This won't work."

This chapter is not over, please click on the next page to continue reading! Uncle Er nodded and picked up the walkie-talkie:

"All combatants on the fence should note that single-number liquid nitrogen sprayers continue to spray outside the base, and double-number liquid nitrogen sprayers are sprayed in the direction of the base."

Sizzle-

"receive."

"receive."

....

The voices of those people kept ringing from the second uncle's intercom.

Li Yu looked at the military radio and asked to his second uncle:

"Is there a heavy fog in the oil city?"

The second uncle quickly said, "I happened to have a conversation with Ju Tianrui before you come. There was no heavy fog on his side, and there was no other place for the Northern Federation garrisons, and there was no place for Lao Xie."

Li Yu frowned and said in his heart: Maybe it hasn't blown over there yet.

Outdoor on duty.

My uncle stood on the wall, frowning tightly.

He had just notified Lao Bi from the outer city and asked him to bring people to support him quickly. Lao Bi is probably still on the way now.

Spraying liquid nitrogen requires manpower, but guarding the enclosure also requires manpower.

The zombies have not arrived yet and the manpower is not nervous, but if the zombies come, it will be a little trouble.

Although a mobile brake knife is installed on the wall to effectively clean up zombies, if the mobile brake knife fails and no one notices it on the wall, as time goes by, the zombie stack will inevitably climb up.

Therefore, there must be a dedicated person on the wall.
To be continued...