After more than a day of driving, the convoy encountered two waves of zombies on the way, and finally arrived at the backing farm without danger.

The so-called backing mountain means that the north of this farm is the Hung Yen Mountains.

The towering mountains to the northwest of the farm, blocking some of the cold winds of the northern Siberian plains, also allow for a small convergence of warm and humid air currents here, so the climate here is slightly better than in the surrounding areas.

More than 300 kilometers to the east is the coal city, 400 kilometers to the south is the ice city, and 100 kilometers to the southwest is the flower city.

There are several counties in the vicinity, but the population here is not large.

Because there are mountains to the north and northwest, the transportation is not so convenient.

The Seven Stars River originates in the Hung Yen Mountains and flows through the middle of the farm, nourishing the land.

A radius of several hundred kilometers, most of which are fertile fields, and near the Hung Yen Mountains, there was once a gold mine.

Ye Fan remembered that when he was a child, he often heard that gold could be mined here, but when he grew up, it gradually disappeared, and it may be that the reserves of gold mines are not large.

However, Ye Fan wanted to try, Red Alert's mining technology is definitely at the world's leading level, as long as there is a mine, it can be detected by a minecart.

Ye Fan's convoy came all the way to the backing farm and stopped at the edge of the Seven Star River.

Engineer Luo Jiaxin came to Ye Fan's side with two new engineers.

"Sir, I think the place you chose is still good, you see, the mountains in the north are a natural barrier, and the Seven Star River can provide us with a steady stream of water, I suggest that you build the base at the mouth of the Seven Star River downhill, and include the upper reaches of this river within the base area, so as to ensure that we have an inexhaustible supply of drinking water. ”

"You mean, let the river flow through the base?"

"Yes, water is the source of life, and there is no guarantee of survival without sufficient water, and we must ensure that the source of water is under our control, which is one of the prerequisites. ”

Ye Fan admitted that what Luo Jiaxin said made sense, but in this way, the amount of work was relatively large.

The base that accommodates the flow of a river is no longer a base that can be described, but a small city.

The single circle wall project is definitely not a small expense, and according to what Luo Jiaxin said, his 100,000 gold is far from enough.

Luo Jiaxin was still talking about his plan: "Sir, I don't think you have to think too much about it first, the first thing you need to consider is the internal base of our Red Police team, for example, you must first determine your place of residence." ”

As she spoke, Luo Jiaxin took out a prepared drawing.

"Sir, after you explained my design base drawings, I was working on this work, and after using your walkie-talkie to talk to Huang Jie and them yesterday, I already understood the general situation. ”

"First of all, you need to have a core area, located in the safest location of the entire base, where our team can be rebuilt when people die, and buildings can be rebuilt if they are damaged, but you can't, you are the only one. ”

Ye Fan nodded, he knew this very well.

"So first of all, you decide on a living area of your own, circle a place, and set aside your commander's residence for the future, I suggest that this place is close to the river, easy access to water, and good scenery. ”

You continue. Ye Fan was interested.

"The core area is your residence, and then there is our Red Police internal base, and I suggest that this part is not open to the public, and this part of the area is quite large. ”

Luo Jiaxin took the drawings and pointed out to Ye Fan: "I communicated with Huang Jie that the area of a power plant is almost 30,000 square meters, and the area of a military camp is even larger. After that, here is the construction of the radar station, here is the construction of the tank factory, and the air command department is a large area, which needs to be able to provide fighter jets for take-off and landing. ”

Ye Fan looked at the dazzling buildings above, and there was also the construction of the combat laboratory and the construction of the nuclear power plant in the back.

Field hospitals, superweapons, repair factories, a whole bunch of them.

"Sir, and I suggest that these buildings be separated by walls from each other, and that the barracks and the chariot factory be a little further away, so as not to disturb the rest of the soldiers.

It is best to have a side door near the tank factory and barracks to facilitate the quick dispatch of troops, and it is not possible to go to the area where the survivors are located in wartime. ”

Ye Fan listened for a while: "Then how much area do you say we need in the internal area?"

"It depends on what kind of unit the commander builds, and if you have a battalion, one square kilometer is about the same. A regiment would need at least three square kilometers, because the barracks would need to be expanded to four, and the tank factories would need to be expanded, because the vehicles would need garages, and the power plant would need to be increased, and the more buildings there were, the more electricity would be needed. ”

"And what if it's a brigade?"

"A brigade would have to multiply several times, and it might take at least eight or nine square kilometers. ”

Ye Fan looked around, if it was a brigade, this place might be a little insufficient.

Because he is not only a red police unit, but there will be more and more survivors in the future, and even more survivors than the red police unit.

The cost of that wall is an astronomical amount, not to mention a ten-meter-high wall of 500 gold and one meter, and a five-meter-high wall of 100 gold and one meter, Ye Fan can't afford to build it.

"That's good, the area of the internal area, designed according to four square kilometers, is the territory of the reinforced regiment, and then expand when the team grows, we must remember that the design is reasonable, it is easy to manage separately, and the various buildings should not affect each other. ”

"Understand, sir, first of all, please determine the location of your mansion, and we can build a base around it. ”

Ye Fan beckoned Han Haoyu, the driver of the armored car, to come over, and he, three engineers, and two scouts got into the car and drove along the Qixing River.

After jolting on the river bank for a while, I came to the foot of the Hung Yen Mountains.

This is where the Seven Star River descends, and because of the river's washing, a waterhole has even formed here.

The waterhole is not too big, about 2,000 square meters, and the water is extremely clear, and you can even see fish in the water.

There is a silvery sand beach by the river, while there is a gentle slope up the beach, surrounded by birch forests, ginkgo trees, and even a few hawthorn trees.

There's even a thatched hut that was built by the farm's caretakers when they were patrolling the mountains, but it's empty now.

Being able to build a house here is enough to show that the scenery is beautiful.

"It's such a great place, I think it's a great place. ”

Ye Fan looked at this gently sloping area, if it was to build an official residence, it would definitely be the first choice.

There are mountains and rivers, and there is a large plain at the foot, which is a very good location for building a base or continuing to farm in the future.

The river is even capable of navigating small boats, there are roads nearby, and there is a backing farm railway station seven kilometres away for trains.

As for the approximate location of the abandoned gold mine, it should be in the mountains, and it should not be very far away.

It's nothing farther away, and a few more trips of the mining cart will do.

"Please sir, determine the coordinates of the center!"

Ye Fan walked around for a while, and finally came to the center of the gentle slope.

Stepping on the ground: "This is it, this is the center of my official residence, you can start designing according to this coordinate." ”

"Understand! With this central point being built, according to the proportions of a reinforced regiment, the inner perimeter covers an area of four square kilometers. ”

A few engineers moved quickly and began to design.

The engineer began to plan, and Ye Fan began to calculate the cost of the fence.

It's not that I don't know, but I'm shocked.

Ye Fan didn't plan to build a ten-meter-high wall, but even a five-meter-high wall would cost 100 gold one meter.

Even with a rectangular interior area, this circumference reaches 10,000 meters!

The cost of a five-meter wall is 1 million gold!

And that's not counting the various fences in the interior area, just the exterior wall price.

Of course, it is not possible to count the walls of the survivors' living quarters, which is probably an astronomical number.

At first, I thought 100,000 gold was a lot, but now it is too little.

"It turns out that the wall is the big money-eater, and it seems that this base can't take down millions of dollars without the wall alone. ”

Just when Ye Fan was at a loss, Nana sent out a voice prompt.

"The engineer has completed the drawing, the chief has decided to start the construction of the base, in order to save costs, unlock the material recovery station, please check it!"