The buffer city reconstruction plan will be completed in half a month.
The outdoor temperature rose from minus 35 degrees Celsius to minus 14 degrees Celsius.
The buffer city wall was built at an average speed of one meter every two days, from its original height of eight meters to a height of 15 meters.
The wall was built at the fastest speed ever.
If the temperature wasn't still below zero, the construction speed might have been even faster.
But at the same time, the number of people involved in the construction also reached a historical peak. The number of construction workers in the entire buffer city reached 140,000, and almost all vehicles and equipment in the oil city and the trading market were used.
In order to speed up the solidification of cement, they adopted various methods:
1. Add chemical accelerators: such as calcium chloride, ammonium sulfate, sodium carbonate, etc.
2. Increase the cement temperature and add hot cement or hot water to mix.
3. After the cement grouting is completed, use a hot air blower immediately to increase the surface temperature of the cement to promote solidification.

The third day of March.
All the snow in the buffer city was cleared that day. After the snow was cleared, all the remaining manpower was concentrated on the construction of the greenhouse.
But after these days of actual combat exercises, all combat teams in Oil City have been trained and their actual combat capabilities have been greatly enhanced.
In the southern part of the buffer city, Fang Jingxin frowned as he looked at the small pile of limestone left in front of him:
"Is that all that's left?"
The supervisor next to him nodded nervously:
"It's been consuming a lot lately, that's all."
"Oh, there's going to be a big problem!" After Fang Jingxin left this sentence, he hurried towards the buffer city wall construction site.
At the wall construction site, Xie Changshan is personally supervising the construction.
"Chief Engineer Xie, we don't have enough cement."
"If it's not enough, just produce more!" Xie Changshan glanced at him in confusion.
Fang Jingxin replied helplessly:
"We have all the other materials for making cement, but we don't have enough limestone. At the current rate of consumption, we can only keep going for two more days before the cement supply runs out."
The most important material for the construction of buffer city walls is high-strength cement.
Limestone is the most important raw material in cement production, accounting for 60% to 80% of cement.
In short, without cement you can’t build a wall and without limestone you can’t produce cement.
They rarely stockpile cement, as cement has a shelf life, but limestone can be stockpiled.
Limestone itself does not react directly with water. What reacts with water is actually quicklime produced after high-temperature calcination.
Limestone is relatively easy to store.

They had stored a lot of quicklime before, but they couldn't keep up with the recent huge consumption.
Xie Changshan frowned when he heard his words.
If the cement supply is cut off in two days, the construction of the entire buffer city wall will have to be stopped, which will have a huge impact.
Thinking of this, he ran down from the construction site.
He walked to a car and looked at Fang Jingxin behind him, "What are you standing there for? Get in the car!"
The buffer city construction site cannot stop. Now that the daily temperature is gradually rising, they must increase the height of the buffer city wall as much as possible.
But now the raw materials are scarce, and even a good cook cannot cook without rice.
He couldn't handle it, so he could only ask the minister for help.
soon.
They arrived at Oil City.
"What? Stop work?" Uncle San couldn't accept the news after hearing it.
Now is the time to work at full capacity, and you tell me to stop?
The topography of the Oil City is relatively low compared to the surrounding areas.
Especially the two rivers from the direction of Jigong Mountain, once the temperature rises and the snow melts, floods are bound to break out.
The water of Nanwan Lake, ten kilometers away, is formed by the confluence of one of the rivers.
After hydrological and geographical altitude calculations by experts, it was determined that the buffer city wall must be at least 15 meters high to avoid being submerged by floods.
It is already fifteen meters high now, but they cannot guarantee it. They can only increase the height of the buffer city wall as much as possible. Otherwise, once the wall is flooded and rushes into the buffer city, the greenhouse will be useless.
Uncle San peeled the tangerine in his hand, his eyes solemn, and said in a resolute tone:
"No, we must not stop working!"
He raised his head, looked at Xie Changshan and asked:
"I remember there was a limestone mine near our oil city?"
Before coming here, Xie Changshan had already figured out where to get the limestone.
"Yes, there is limestone in Shang County, which is farther away, and Xin County, which is closer, is about 75 kilometers away from Oil City."
Uncle San waved his hand.
"Then send some people out to dig for limestone. There are still two tons of black powder sent from the headquarters base. We can use it to blast rocks."
"You go back first, I will contact someone to resolve this matter."
"Okay, Minister." Xie Changshan nodded and turned to leave.
There is still enough limestone to last for two days until new limestone is mined.

After Xie Changshan left, Uncle San stuffed the peeled citrus flesh into his mouth one piece at a time.
Next to the window of the heating room, there is a row of citrus peels, all of which have been air-dried.
Uncle San quickly contacted Ju Tianrui and Lao Luo and asked them to send out two militia battalions and then take the previous mining teams out to dig limestone.
Xinxian is not far from the oil city and can be reached in two hours by car.
Although the limestone mine was frozen by ice and snow, they had black powder in their hands and could save a lot of effort by just continuing blasting.
After giving the instructions, Uncle San casually placed the remaining citrus peels on the windowsill.
I've been having a sore throat lately, and making tea with dried orange peel has proven to be quite helpful in reducing my fever.
It is nearly 600 kilometers from Huashan to Oil City.
These days, Ji Ba and the old Taoist priest glided every day, at an average speed of 55 kilometers per day, and walked for almost ten days.
Their speed is actually quite fast.
Although the speed of sliding in the snow is relatively fast, it becomes slow when encountering an uphill slope.
But now the snow covers the ground, and there are fewer zombies on the ground.
Even if they encounter zombies, they can quickly get rid of them by sliding on snowboards.
The night is deep.
ZMD city center in the north of Xinyang, on the top floor of Zhongnan City Garden.
Ji Ba broke off the rotten desk board and threw it into the fire in the center.
"Master, we should be able to reach Oil City tomorrow. I'll treat you to a drink when we get there. I know a lot of friends there. Then we can go."
"Master, are you hungry? How about some compressed biscuits?"
"Master, are you asleep?"
Seeing that the master had been ignoring him, Jiba leaned against the wall behind him, looking at the toilet opposite and eating a tortilla.
There is no other way to stay here.
After so many years, the window glass of ordinary buildings would have been broken long ago.
This is especially true at such high levels.
The originally fully furnished house now looked like a bare-bones house.
The ground was covered with dust, garbage and dirt.
Moreover, the windows of many buildings are very large, so wall-climbing zombies can climb in easily.
So they chose the bathroom in the master bedroom, where the window is very small, less than half a meter wide, and the windows in such places are generally at an angle, so the aluminum alloy glass of the window was preserved.
"Qingfeng." The old Taoist priest, who had been silent for a long time, suddenly opened his eyes.

"Master." Ji Ba was stunned and handed over the compressed biscuits in his hand.
The old Taoist priest was not shy and took it and ate it.
It was dark outside at night.
From time to time, the roars of zombies could be heard.
After eating the compressed biscuits, Jiba asked, "Master, do you want to lie down and rest? You have been sitting and resting for so many days. It must be uncomfortable."
"No, I like to sit and rest."
After hearing this, Ji Ba didn't know what to say.
These days, the master is the one who keeps watch.
I persuaded him several times to keep watch together, but the old Taoist said it was unnecessary.
After a whole day of traveling, Jiba was exhausted. After eating, he felt sleepy.
Curled up on the mat, he fell into a deep sleep near the fire.
It’s reassuring to have a master around.
Time passed slowly, and the smoke from the fire burning in the center drifted out through the glass window with a crack and the door with a hole in it behind him.
The latest novel is published first on Liu9shuba!
I don’t know how much time had passed.
Crunch!
Suddenly, there was a sound of friction on the wall outside. It was the sound made by the claws of the wall-climbing zombies scratching the wall. It was very unique.
The old Taoist priest who was sitting cross-legged and looked like he was asleep suddenly opened his eyes.
He stood up and picked up the sword behind him.
"Qingfeng, wake up." He called out to Jiba, but Jiba was sleeping too soundly.
In the past, when he went out alone, he was very alert, but in recent months, after being with the old Taoist priest, his sense of security has been completely reduced.
Slowly relax.
The old Taoist sighed, walked to his side and pushed him, and Jiba woke up.
"What?" Jiba had just woken up, his eyes still a little dull.
The next second, he heard a creaking sound coming from outside.
I was suddenly shocked.
He quickly picked up the machete beside him and stood up.
The old Taoist priest walked quickly to the window and closed the small window.

Boom!
A wall-climbing zombie's claws scratched directly at the window glass.
The window glass was opaque, so they couldn't see what the zombie looked like.
"Wall-climbing zombies!?" Jiba was a little panicked.
He quickly dug out an ultraviolet flashlight from the package, but as soon as he turned it on, the ultraviolet light dimmed.
The power is out!
Depend on!
It's useless at the critical moment!
Seeing the somewhat panicked Jiba, the old Taoist priest said calmly: "Don't panic, the master is here."
After hearing this, Ji Ba felt much more at ease.
He didn't dare use the gun. Once he used a gun in the city at night, it would be like making a nest when fishing, and many zombies would come running over.
It is said that this gun was given to him by someone for self-defense at a trading market.
Crunch!
It seemed that the wall-climbing zombie outside was getting a little impatient and started banging its head against the window glass.
The window glass was solid and was not broken.
Phew~
After hearing the voice gradually fade away, Jiba sat on the ground and breathed a sigh of relief.
Fortunately, he left.
But the old Taoist priest did not relax. He frowned and suddenly looked towards the door.
"Qingfeng, come behind me."
"ah?"
"quick."
Ji Ba quickly stood up and walked behind the old Taoist priest.
A few seconds later, there was a slight friction sound outside the door.
Boom!
The door was suddenly slammed violently, and a claw even stretched out directly from the hole in the door.
It slid out deep grooves on the wooden board.
The claws of the wall-climbing zombies are extremely sharp and long.

clang!
Ji Ba felt a gust of wind blowing past him, and the old Taoist priest disappeared the next second.
When he raised his head, he saw the old Taoist priest cut off the zombie's claw with a sword.
Roar, roar, roar!
The wall-climbing zombie outside roared and rammed the door hard.
The door was not very sturdy to begin with, and some of the useful things in the house had been moved out long ago, so there was nothing to use to block the door.
Boom!
In the end, the door couldn't withstand the impact of the wall-climbing zombie. The door broke, and a wall-climbing zombie rushed in.
hiss!
Jiba gasped. He originally thought there was only one wall-climbing zombie.
Following the firelight, he saw that behind this wall-climbing zombie, there were three more wall-climbing zombies.
Roar!
The wall-climbing zombie that rushed in first rolled on the ground twice and then rushed directly towards Jiba.
tread.
The old Taoist priest just took a step forward.
point.
prick.
The wall-climbing zombie was halfway into the air when it was hit on the head by a sharp sword.
The action was extremely fast.
Rub, rub, rub——
At the same time, the three wall-climbing zombies outside rushed in.
One end climbed up the wall to the ceiling, and the other two rushed in from the front and back.
This bathroom is actually quite large, with a bathtub and a washbasin, and is nearly six square meters.
The old Taoist priest had a calm expression. After seeing these zombies climbing the wall, there was no change on his face.
He just waved the sword in his hand, and it went on.
Phew!
Puff!
Ji Ba watched in amazement as his master quickly killed four wall-climbing zombies. He looked at his master as if he was looking at a god.

He knew very well how terrifying wall-climbing zombies were.
Although the master had the advantage of a small space, it was still very impressive that he could kill these four wall-climbing zombies in such a small space.
Moreover, from his perspective, it seemed as if the wall-climbing zombies were charging towards the tip of the sword.
It is obvious that the master predicted the next move of these zombies and was able to create such an effect.
"Master, teach me!" Ji Ba said to the old Taoist priest with shining eyes.
"Okay, but you have to be prepared to endure hardships. It will take at least ten years to master this skill." The old Taoist priest said lightly.
People who practice Taoism are very patient.
"Ah! Another ten years." Ji Ba's face was full of pain.
He is already in his thirties, and after ten years of studying, he must be in his forties, and he is just getting started???
No shots were fired, so the noise was minimal.
Wall-climbing zombies have a keen sense of smell and can find humans more easily than ordinary zombies.
But wall-climbing zombies are not common, and it is considered "lucky" to encounter four wall-climbing zombies in one night.
Ji Ba carried the zombies outside and imitated his master, sitting cross-legged to meditate and rest.
But as he sat there, he finally fell to the ground and fell asleep.
(asking for monthly ticket)
This book has million words so far. I wrote it for more than two years, averaging 8,000 to 10,000 words a day. I am really tired now, so I will try to update twice. If I am in a bad state, I will update once. My one update is 4,000 to 5,000 words, which is equivalent to two chapters of others. Two updates means four chapters.
I've seen people overworked recently, and I'm so scared. I really can't hold on any longer, I want to stay alive and sleep with everyone.

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