Popular cities require a large amount of foreign materials to maintain normal operation.

Given that the population density of rescue cities is similar to that of Hongkang Island, the current situation of Hongkang Island can be used as a reference object for rescue cities.

Taking Hongkang Island as an example, from water, electricity, gas, vegetables, rice, oil, salt, sauce, vinegar and tea, Hongkang Island cannot meet its own needs, and most of them rely on the supply of foreign materials.

Without external support, Hongkang Island will lose 66% of eggs, 70% of fresh water supply, 92% of fresh vegetables, 94% of fresh pork, 100% of fresh beef, and 90% of the overall food source.

Simply put, if the supply of foreign materials on Hongkang Island is cut off, Hongkang Island will lose 90% of its food source. In the absence of food, can Hongkang Island maintain such a high population density?

The answer is naturally impossible!

According to Fan Fangsi's rescue city planned, although the population density is highly similar to that of Hongkang Island, it is two orders of magnitude different in terms of total population!

The total population of Hongkang Island is only more than 13 million, but the total population of rescue urban design is 100 million.

Although the population density is highly similar, with a total population of 100 million, the amount of supplies needed for rescue cities is also two orders of magnitude different from Hongkang Island.

With such a total population, how much foreign material supply is needed to maintain the normal operation of the rescue city?

Fan Fangsi snapped his fingers, and the reality gem showed the information that Fan Fangsi constructed in his mind in the third living room, like three-dimensional light and shadow.

"The eight rescue cities only designed a total population of 100 million, not really accommodated 100 million people." Fan Fangsi pointed in the void, "According to my design plan, the eight rescue cities will be equipped with the same number of resource cities."

"Taking Shicheng and Rongcheng as examples, I plan to set Shicheng and Rongcheng as rescue cities, relying on current urban construction, and in the next three years, we will transform Shicheng and Rongcheng on a large scale to build an intensive rescue city with a total capacity of 100 million people." Fan Fangsi said.

"In the north of Shicheng and the south of Rongcheng, we will continue to plan two resource cities. The two resource cities will mainly provide all living supplies for Shicheng and Rongcheng. We will try our best to plan the most basic living supplies guarantees in the two resource cities. Just like the super earthworm project in the Wandering Earth Plan, we only need to ensure the minimum production level of daily living supplies." Fan Fangsi continued to tell.

"Eight rescue cities and eight resource cities will be paired to form a city cluster, and the resource cities can also add an additional 10 million population capacity." Fan Fangsi added the narrative.

Zhang Enmin quickly calculated that he had been planning how to rescue more people. For Fan Fangsi's plan, it took him only a few minutes to determine the relevant issues.

"If all the problems are ignored, the plan proposed by Mr. Fan is indeed feasible!" Zhang Enmin made a rational judgment.

The plan proposed by Fan Fangsi is feasible, but there are too many problems. If it weren't for the plan proposed by Fan Fangsi, Zhang Enmin would have already cursed him?

Establish rescue cities and resource cities on the ground?

How to deal with extreme cold weather?

After the Wandering Earth Plan is implemented, the temperature on the earth's surface will drop rapidly to minus 80 degrees Celsius. Such a temperature will freeze all life on the ground.

"Tell me what problems you have, and we will solve them one by one." Fan Fangsi asked.

Zhang Enmin immediately raised the problem of extreme cold weather.

Regarding the extreme cold weather problem, Fan Fangsi actually has a solution!

In the Star Wars world, Fan Fangsi has been preparing to build larger warships. Whether it is the two Nemodias in the Trade Alliance or the Skynet that Fan Fangsi had previously cheated, they have designed more powerful partial guide shield generators.

According to the properties of partial guide shield blocking energy, it can completely isolate the transmission of hot and cold energy.

Fan Fangsi only needs to return to the Star Wars world and design and manufacture a semi-spherical partial guide shield with a diameter of 100 kilometers to isolate extreme cold weather.

As for the protection of underground space?

At worst, it is to dig a circular downward trench around the edge of the city, so that the partial guide shield can be integrated into the ground. It only takes five hundred meters or a little deeper to isolate the extreme cold outside.

After all, there is geothermal heat deep in the earth, and it is impossible for the ground to transmit too much coldness to reach hundreds of meters underground.

"I can solve the problem of extreme cold weather." Fan Fangsi explained in detail, but did not talk about the fact that the guide shield was partially guided, but said that there was a magic array that could solve the problem.

At most, it is just to use the reality gem to change the appearance of the partially guided shield generator, thereby changing the partially guided shield generator into the core of the immortal magic array with a full fairy flavor?

Zhang Enmin was fascinated by the fact that "if the extreme cold temperature problem is solved, the biggest problem will be solved. The second biggest problem is the energy problem. Whether it is a rescue city or a resource city, even maintaining a minimum living security, it requires a lot of energy. By the way, Mr. Fan, what we need is electricity."

Fan Fangsi thought about it for a while before responding, "This question is still not a problem."

In the Marvel World, the Tokamak installation on the ground floor of the Stark Industrial Building can supply the energy consumption of the entire New York.

Although the population of New York cannot reach 100 million, it is really an uncertain thing to have a population of 100 million with a minimum living security.

So what if you consume a little more?

The tokamak device on the ground floor of Stark Industrial Building is just a small device with a diameter of no more than ten meters. If it is a larger tokamak device, it can provide more energy.

"I can also use the magic array to solve the problem of energy, and convert energy into electricity, so that you can use it conveniently." Fan Fangsi added.

"Satisfies the use needs of 100 million people?" Zhang Enmin asked cautiously.

Fan Fangsi nodded slightly, "Although there will be some price, this price is within my tolerance. So I can solve this problem."

Speaking of this, Fan Fangsi looked at Zhang Enmin and said, "We are all ants-like existences. I hope you will eventually break the shackles of fate and provide me with a little possibility of breaking away from fate."

Zhang Enmin took a deep breath and responded solemnly, "We have fought against fate, and we have started a tragic plan to wander the earth, thus breaking the fate of genocide."
Chapter completed!