Returning to the station, Ye Fan immediately returned to his temporary tent.

He first checked his supplies.

All the materials brought back by the new soldiers of the third company were sent to the recycling station, and there was no mountain of goods outside.

Now all those materials have been turned into numbers in Ye Fan's red alert page.

After opening the recycling bin and checking it, he found that the existing materials were enough to build a 5,000-meter wall.

Cement is especially abundant, the amount of steel is slightly insufficient, and the amount of sand and bricks is medium.

It is simple to build a wall with materials, one meter can be built for only 10 gold, and Ye Fan immediately produces a wall of five thousand meters.

"It was determined that the construction of a 5,000-meter fence would offset 90% of the construction cost with materials, consume 50,000 gold, and complete one meter in every 6 seconds on average, and the chief could place the construction at any time. ”

Then Ye Fan saw Ye Fan on the five-meter wall, and the progress bar began to rotate in circles.

One meter in six seconds is still very fast, and ten meters in one minute.

A few minutes passed, and Ye Fan walked out of the tent.

Behind him, engineer Luo Jiaxin and the others followed behind, telling Ye Fan where the inner wall should be built.

The first is to accommodate the river inside the base, then it is necessary to build along the riverbank.

Ye Fan suddenly asked Nana: "Nana, can the door of the base also be built through the system?"

"Yes, sir, every kind of wall has a gate to match, and there are two kinds of gates, the land gate and the water gate, but the construction of the gate is ten times more expensive than the wall. ”

Ye Fan nodded, it was nothing ten times higher, after all, the door only occupied a small part of the area.

He began to set up walls from the banks of the river and inland.

On the edge of the river beach, the suitable place for construction starts first, and the straight-line distance extends for a hundred meters!

With a bang, the construction of a huge wall came out!

Five meters high, 100 meters long, done in an instant!

Ye Fan first froze for a moment, sighed in his heart at the magic of the system architecture, and then he climbed the wall to watch.

There are steps to the top under the wall, but only on the inside.

Walk up the stairs to a walkway that is one meter and five wide.

There is a buttress in front of the walkway, which is about a little more than a meter, and the main body of the five-meter-high wall is five meters high, but if you count the battlements, it is more than six meters.

Looking down from the battlement, the upright wall below is as smooth as a mirror!

The concrete leveled the fence so that there were hardly any protrusions in sight, and there was nothing to climb.

It is only at a height of five meters that the wall is raised, but it is only half a meter outward, and it is circular, connecting the wall with the battlement.

The five-metre-high wall below is almost impossible to climb, and even if you do, the circular bump is a major obstacle to continuing to climb.

Even if you can jump over this bump and climb up, it will definitely be quite difficult, and it will immediately become a target for the defensive soldiers behind the battlement.

Ye Fan stomped his foot hard, feeling that his feet were a little painful, the strength of this wall was beyond imagination.

"The fence is still not wide enough, and the head of the wall is not too much. ”

"Sir, you get what you pay for, if you build a ten-meter wall, the width of the wall above will reach four meters, and there is a curved lane to the top, and the transport truck can easily run on it. ”

Ye Fan nodded, this ordinary building material plus the cost of 10 gold and one meter, it is already worth the price to be able to build this kind of wall, and he can't be too greedy.

At least in Ye Fan's opinion, ordinary zombies or even mutated zombies, if they want to climb this wall, unless the dead corpses below are piled up too high, it is impossible at all.

As for the creepers encountered today, it seems promising, but it will not be particularly easy either.

And there are also defensive warriors, unless a large group of creepers rush up together, otherwise they will be sent to death.

When the wall is encircled, he will make a guard tower and a heavy machine gun, and his defense line will be basically impregnable.

Walking on the wall, the cool breeze blew the earthy fragrance of the field, and Ye Fan couldn't help but feel a little fluttery.

He suddenly became interested, and pointed to the field below: "Look, this is my ..... for you." ”

When I turned around, I saw that it was not Zhuge Yunxue's pretty face, but Shen Ruihui's tense face.

"Commander-in-chief, what are you talking about?" asked Shen Ruihui with some excitement.

"The work arranged for you, you will take someone to clean up this piece tomorrow, this main fence will be completed, and the partition wall of the internal building will also be started. ”

"Understood!"

Shen Ruihui was finally assigned a leading task, and he was full of energy.

After walking the 100-meter wall, Ye Fan began to place the walls one by one.

The location of the fence is a key area, and the stones and trees and other debris have already been cleared, and he placed them quickly.

The engineer told Ye Fan on the side that he needed to leave the door where he needed to skip it when he got there.

The inner base Ye Fan's plan is to set aside ten doors.

Among them, there are eight land gates, and there are two water gates, which are set up from the place where the river enters and exits the city.

The inner base is a long strip with a width of four kilometers on the front and only one kilometer on the sides.

There are three land gates on the front, a water gate of the Seven Star River, and an iron gate of the material recovery station.

A land door on each of the two sides.

There are two land gates and one water gate in the back.

The width of each gate is 20 meters, the width of the main gate on the front is 30 meters, and the width of the water gate is 50 meters.

However, the materials for the construction of the door have not yet been completed, and a lot of steel is required.

Let's talk about enclosing the wall first, after the five thousand meters of wall is placed, most of Ye Fan's inner wall has come out.

There are still more than 2,000 meters of wall left, and it is estimated that the materials will be ready tomorrow, and then there will be ten gates.

After placing the wall, the time was almost dawn, Ye Fan was still not sleepy, and Ye Fan began to place the sentry tower again.

The cost of the sentry tower is slightly more expensive, after all, there are not many basic materials needed in the sentry tower, and the most expensive ones are the heavy machine guns, searchlights, and heavy machine gun soldiers inside.

Corresponding to the five-meter wall is a seven-meter watchtower with a main body height of 5.5 meters and a foundation of 1.5 meters.

The construction cost is 1,800 gold, and if there are three army soldiers guarding it inside, then it is 2,400 gold.

Three people, one to control the machine gun, one to control the searchlight, and one to rotate.

Ye Fan took a look at the materials and was a little, if materials such as reinforced concrete were added, the construction cost could be reduced to 2,000 gold.

Overall, it's okay, after all, a heavy machine gun trio will cost this price.

The current materials are enough to build four guard towers, and Ye Fan will produce them immediately.

In the process of producing the sentry tower, Ye Fan even fell asleep, and when the construction was completed, he got up again.

He placed the four watchtowers in the four corners.

The seven-meter sentry tower was set up, and the soldiers inside saluted Ye Fan.

These fighters were also counted into the establishment of Ye Fan's battalion headquarters, and there were twelve more fighters out of thin air.

Of course, the eight-kilometer wall and four guard towers are not enough, and Ye Fan has to wait for today's supplies to arrive before he can continue to add them.

After the construction of the sentry tower, it was already early in the morning.

Ye Fan took the steamed buns from the morning of the cooking class and ate them, while walking on the wall.

Now the walls on the left side of the front are almost the same, only the back and right walls are not built.

It can be said that the general framework of the inner layer of the base has come out.

The early morning sun shines down, dyeing the walls with a layer of gold, and it looks a bit spectacular.

Groups of soldiers woke up in the morning, some were patrolling with military dogs, and some were ready to set off again after breakfast to look for supplies.

The army soldiers in the sentry tower faithfully performed their duties, and the eyesight that could become a sentry was very good, and they were equipped with binoculars and night vision devices, as well as high-powered searchlights, and they could be seen at a glance within more than ten kilometers around.

Anyone who dared to approach recklessly was shot mercilessly by the sentries.

And four square kilometers outside the inner layer is the area that Ye Fan planned to leave for the survivors.

This area is larger, about a dozen square kilometers, originally a large wasteland, and there are a lot of rocks and weeds.

However, Ye Fan didn't plan to let the soldiers clean up this area, so it was better to leave it to the survivors to do it themselves.

If you want to live a good life, you have to work.

He planned to wait until today to complete the wall and explode the troops, and then go to the mountains to find the location of the gold mine in preparation for the construction of the mine.

As soon as I opened the soldier page to prepare for the riot, the walkie-talkie rang.

Answered, it was Xu Haoran who called.

"Sir, the base car is expected to be completed tomorrow, please instruct the sir!"