Chapter 1155 Secretly opening the city gate?

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

She is much stronger than Li Yu imagined. She saw Li Yu murder with her own eyes and was able to remain relatively calm.

A trace of surprise flashed in Li Yu's eyes, but after thinking about it carefully, it seemed reasonable.

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

"I'll take you to the residential building opposite first. Find a place for you to stay. When the situation gets better, you can return to the inner city." Li Yu thought for a while and said to Xiaohan.

Then he glanced at his third uncle and nodded.

open the door.

After the two came out, he glanced at the people in the greenhouse with cold eyes.

The look in his eyes made everyone inside feel as if they had fallen into an ice cellar.

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

The distance from the greenhouse to the residential buildings in the outer city was very close. Li Yu shined the searchlight over it, but he could still only see one or two meters to the side.

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

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

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

"It's the city lord."

"The city lord is out."

There was a discussion on the opposite side, and along with the sound of footsteps, the faces of these people appeared in front of Li Yu.

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

Li Yu nodded, then pointed at Xiao Han and said to He Chao: "Send someone to take her to a residential building in the outer city."

"Okay, Aguang, you send her in."

Aguang held a flashlight, walked to Xiaohan, and then took her to the residential building in the outer city.

Watching the two people leaving and disappearing into the thick fog, Li Yu nodded, and then continued to say to He Chao:

"When I was passing by the greenhouse just now, I heard that there was a situation in the greenhouse of my collaborators. You will send the message to Lao Luo later and ask him to lead people to watch the greenhouse."

"Ah? How dare they? Rebellion?" He Chao was both angry and surprised.

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

It seems that the killing is not cruel enough.

Li Yu continued: "I have killed those two arrogant people on the spot, but this matter must be thoroughly investigated."

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

There is a large searchlight on the outer wall of the city. This searchlight can illuminate the situation a hundred meters away.

However, in heavy fog, even the light from the wall to the ground cannot reach a distance of thirty meters.

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

He Chao frowned and followed behind Li Yu and his third uncle.

Tap tap tap!

Climb the outer city wall.

Li Yu then saw Lieutenant Commander Yang standing next to the liquid nitrogen sprayer, wearing an oxygen mask and gloves, spraying continuously outside the city.

The liquid nitrogen was sprayed down, and at a speed visible to the naked eye, the heavy fog outside the wall dissipated, and a light rain began to fall.

Liquid nitrogen has a very low temperature and is highly volatile. When it is sprayed in the air, liquid nitrogen will rapidly expand and absorb a large amount of heat, causing the surrounding environment temperature to drop sharply, and the water vapor in the air to quickly condense into rain.

Li Yu stood on the edge of the wall, looking at the light rain outside the outer city wall. The liquid nitrogen was colorless and odorless, creating such a wonderful scene in the heavy fog:

Shrouded in thick clouds, there is a small area of open space. There is also thick fog in the sky, as well as on the left and right sides, but only this area is covered with light rain.

Like a dream.

With the illumination of the searchlight, they could see the situation on the ground outside the wall while standing on the wall, and they could see as far as tens or hundreds of meters.

After the liquid nitrogen was sprayed out, it spread farther away with the wind, but heavy fog kept coming from all directions.

This is not a regional heavy fog. It covers an extremely wide area, so once the liquid nitrogen spraying stops, the nearby heavy fog will fill in.

"call--"

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

After all, in normal times, when they came in and out of the Da Zhangshu Base and saw zombies, they easily dealt with them.

Therefore, within a five-kilometer radius of the Da Zhangshu base, as long as there is no heavy rain, there are very few zombies.

"City Lord." Zhongshi Yang, wearing an oxygen mask, said quickly after seeing Li Yu.

On the outer city wall, because the sprayed liquid nitrogen would blow onto the wall to some extent, blank areas without dense fog were formed on the wall.

It's just that these blank areas are a bit strange, only two or three meters high.

Above it was thick fog again.

It's as if the sky is above your head, and people can't help but stop and admire it.

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

In the duty room.

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

"Second uncle."

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

"Xiaoyu."

"City Lord."

"Brother."

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

The heating was turned on in the duty room to dry out the water vapor in the duty room.

Li Yu turned off the flashlight in his hand, and then said to his second uncle:

"What's the situation now?"

The second uncle frowned and replied:

"This time the heavy fog is coming fiercely. Although liquid nitrogen has been sprayed now, the effect is limited. The range that can be covered is only around the spray area. The zombies have not come yet. I am afraid that when the zombies come, they will form piles like during heavy rain. Die."

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

"It's still in labor, Kong Shuang is watching over there." The second uncle replied.

Li Yu thought for a while and continued:

"In this way, you ask half of the combatants on the inner and outer city walls to turn the liquid nitrogen sprayers and spray them all in the direction of the base. You can't see anything in the base now, and there will be problems with personnel deployment and transportation. This won't work. .”

The second uncle nodded, then picked up the walkie-talkie:

"Attention all combatants on the fence, the single-numbered liquid nitrogen sprinklers continue to spray outside the base, and the even-numbered liquid nitrogen sprinklers spray in the direction of the base."

Sizzling——

"receive."

The voices of those people kept ringing on Uncle Er's walkie-talkie.

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

"Is there heavy fog over there in Oil City?"

The second uncle hurriedly said: "I just finished talking to Ju Tianrui before you came. There is no heavy fog there yet. In addition, there is no fog over the federal garrison in the north, nor over Lao Xie's side."

Li Yu frowned and thought to himself: Maybe it hasn't blown there yet.

Outside the duty room.

The uncle stood on the wall, frowning.

He had just notified Lao Bi in the outer city and asked him to bring people up quickly for support. Now Lao Bi is probably still on the way.

It takes people to spray liquid nitrogen, but it also takes people to guard the fence.

The zombies haven't come yet, so the manpower is not tight, but if the zombies come, it will be a bit troublesome.

Although a mobile gate knife is installed on the fence, which can effectively clean up zombies, if the mobile gate knife fails and no one notices it on the fence, the zombies will inevitably climb up as time goes by.

Therefore, there must be someone on guard on the fence.

"Xiao Shunzi, you can't do this, try to spray as far away as possible, and tighten it here." The uncle saw Xiao Shunzi spraying all the liquid nitrogen under the wall, so he quickly reminded him.

"Oh, okay." Xiao Shunzi quickly tightened the liquid nitrogen injection port.

Clouds and mountains are surrounded by fog.

The entire Da Zhangshu base was shrouded in fog.

Li Yu walked out of the duty room and walked around the wall.

As liquid nitrogen is sprayed, the buildings near the wall gradually become clearer.

But it's not enough. The places further away from the wall in the city are still invisible.

Li Yu frowned and suddenly thought of a way.

Since you can't spray in the city, try using sprinklers to spray into the sky.

If you can't see anything in the thick fog, just moving the knife will definitely not work.

In addition to the threat of external zombies, there is also pressure from within the city.

It's easy to get into chaos in the base when you can't see anything.

At this time, it is easy for people's hearts to breed evil. Even if they do some bad things, no one can see it.

Li Yu never tests human nature, because human nature is the least able to withstand the test.

He returned to the duty room before even circling the outer city wall.

Contact Lao Lu urgently and ask him to take someone to drive to the factory, fill the tank with liquid nitrogen, and spray liquid nitrogen in the base.

After receiving Li Yu's order, Lao Lu called a few people and hurried down from the fence, taking a tank of liquid nitrogen with him when he left.

As you walk, spray towards the sky.

Only in this way can you see the ground clearly.

The air was humid, and small droplets of water fell wherever the liquid nitrogen was sprayed, forming a light rain.

Lao Lu got off the fence and soon became soaked to the skin.

The clothes stick to the skin, making it sticky and uncomfortable.

But he no longer cares about that much.

呲呲呲——

Liquid nitrogen was sprayed in the air, and light rain continued to fall.

Lao Lu and the others couldn't run, so they could only walk quickly to the garage in small steps.

ten minutes later.

He arrived at the garage and shouted at someone to get the car out, all the while spraying liquid nitrogen from his hand.

If too much liquid nitrogen is sprayed, the air will be easily deprived of oxygen.

But this is not a closed environment, and the air is circulated, so there is no danger of suffocation, but it will make people feel a little uncomfortable.

Boom boom——

The vehicle starts.

Lao Lu did not sit in the passenger seat, but sat directly on the roof of the car.

This is very dangerous, but if they want to drive, they must clear a visible area in front of them.

No matter how slow the speed is, if someone in front of you does not see you, you are still vulnerable to being hit in this invisible environment.

Lao Lu sat on the roof of the car and kept spraying liquid nitrogen.

Then he said to the team members in the car: "Turn on the horn to warn the people in front."

"But, Captain, what if we attract zombies?"

Lao Lu couldn't help but scolded: "If you don't turn on the speaker, won't the zombies be attracted? There are so many people in our base and the popularity is so strong, the zombies must be on their way. Stop talking nonsense and turn on!"

drop--

Vehicles honked and vibrated.

Drive slowly towards the factory at the slowest speed.

And in the outer city.

Qingyang heard the horn sound outside and leaned against the window to look outside.

However, I still can't see anything.

One hand pulled Qingyang's sleeve.

The heating was on in the room, and the lights were on, so I could see clearly.

Li Yuan pulled Qingyang's sleeve and said, "How about you go to the wall to help? There is probably a shortage of people there. My eldest brother must have gone to the outer city to build the wall. You go over there and I'll talk to him on the walkie-talkie."

Hearing this, Qingyang hesitated and said, "What about you?"

"I'll stay here. It's safe. Don't worry." Li Yuan said.

"Okay." Qingyang nodded.

He walked towards the door, then stopped and said to the two senior brothers in the room: "First senior brother, second senior brother, please help me take care of Xiao Yuan."

"Okay." The tall and thin Taoist priest nodded.

But the short and fat Taoist priest Qingxiao stood up and said to Qingyang: "I will go with you."

Qingyang thought for a while and didn't refuse.

After all, senior brother Qing Xiao is better than him in martial arts. Although he is fat, his fighting ability is amazing.

Qingyang glanced at Li Yuan, and Li Yuan nodded towards Qingyang and gave you a reassuring look.

Subsequently.

Qingyang and Qingxiao walked out

They didn't have a flashlight, so it was easy to walk in the corridor, at least there were lights.

But after walking out of the residential building, you can only rely on scattered street lights to guide the direction.

"Follow me." Qingxiao pulled Qingyang.

He had an amazing ear and a good memory. Even though he couldn't see around him, he still walked to the foot of the wall with Qingyang based on his familiarity with the outer city.

Under the wall, it was raining lightly due to the spraying of liquid nitrogen.

Plus there is a street light next to the door,

Although it is hazy, at least it can be seen clearly.

Sudden.

He saw a man standing by the gate of the First Outer City.

This man seemed to be studying how to open the first outer city gate, and was still smashing it with stones.

Tap tap tap!

"Keep your voice down." Qing Xiao said to Qing Yang.

Then slowly walked towards it.

The two of them slowly approached and approached the man under the gate.

Qingyang and the two looked at this man in the rain.

I saw him trying to smash the door with a stone. After smashing it for a long time, he looked left and right again, as if looking for the switch to open the door.

A trace of thought flashed in Qingxiao's eyes.

There is only one way to open the gates of the inner and outer cities.

That is to open it through the mechanism through the wall. It cannot be opened just from below.

Moreover, the gate of the Da Zhangshu base is not pretty, but it is very strong. It is made of tens of centimeters of steel plates, with concrete poured in the middle.

If it weren't for the mechanism, most people wouldn't be able to open it.

But this person wanted to open the door at this time, and when he got out, he would reach the First Weng City. If he opened the door of the First Weng City, it would be equivalent to opening it.

This person has evil intentions.

Qingxiao's brain was running rapidly.

He said to Qingyang next to him: "Look here to see if there are any other accomplices."

"Senior brother, be careful." Qingyang said with concern.

"fine."

Qing Xiao rushed over and asked sternly:

"What are you doing!?"

Boom!

It was like a bolt of lightning exploding from the head of the man at the door.

He trembled all over and ran back.

Although it is raining here, there is thick fog dozens of meters away.

Once this person ran into the thick fog, Qingxiao would not be able to catch up with him.