These people from the No. 1 section of the Feihua base were secretly sent to the surface by Xu You, and after a unified interrogation, they were all sent to the medical team on the coastline.

The leader of Section 1, because he knew too much, put on a muzzle to prevent suicide, was trapped, and had been sent to Xiangcheng by Xuyou's garrison.

This kind of leader is going to be sent to Qing Xiran to search his brain, maybe he can find out the whereabouts of the Huang brothers from their brains.

And the rest, maybe the rich and the guards, don't know what happened to this section yet, they are still immersed in their own drunken gold every day, this is their underground world, they don't know anything about the outside world, and no one tells them.

Qing Xiran didn't bother the lives of these rich people, they didn't know that there were still enhancers in this world, although the outside world had gone through the baptism of the end times, but now people have changed their way of life, and in a few years, they have adapted to sadness.

For the rest, now even ordinary people can live for a long time under the effect of the enhancer.

But Qing Xiran didn't tell these rich people, for these rich people, they entered this underground Feihua base because they knew that they could survive here, so they raised funds for the Huang brothers.

They also knew what the Huang brothers had done with those smart people with good brains, and even, many rich people opened companies before the end of the world, attracting a large number of top smart people with their high salaries, and luring them to the underground Feihua base.

They trade the lives of others for their own lives.

Then they don't have to know how people from the outside world can live, they just need to continue to make fertilizer for the plants in those laboratories in this Feihua base.

Speaking of the ecosystem of the Feihua base, Qing Xiran had to admire the ingenuity of the Huang brothers, they collected the funds of the rich people, established this underground base, and then raised such a large number of rich people, these rich people have to pull after eating and drinking, and the waste pulled out will pass through the underground pipes and automatically transported to the soil of the laboratory as fertilizer to feed the crops before the end of the world.

Although the number of people in the Fihua base is not large, after precise fertilizer distribution, there is a lot of food that can be produced, and this food can fully supply the food needs of so many people in the central safety zone.

Qing Xiran can also copy this ready-made, precise fertilizer distribution system and use it in the artificial cultivation of man-eating plants in the eastern region.

Then Qing Xiran compared the daily crop output of the No. 1, No. 5, No. 4, and No. 3 sections of the Feihua base every year, as well as the number of existing billionaires in each section, and obtained the total monthly surplus materials of the entire Feihua base.

She then compared the amount of materials imported into the Central Security Zone every month, and easily came to the conclusion that the Feihua Base only supplies the consumption of its own base and the Central Security Zone, and the output is far from the amount of other security zones.

In other words, if the Huang brothers have a security zone in the northern region, then the Feihua base will not be able to supply the security zone in the northern region at all.

In the north, the Huang brothers' safe zone, can they be self-sufficient?

At least, Qing Xiran can now be sure that this northern security zone must have established its own production system.

So, as long as you count it in reverse, how many villages are there in the northern region, and see which village has bought the least materials from the Times Base, or even has not bought materials from the Times Base.

She was silent, and issued an order to the trading house and Qu Yang, asking them to register where the people who bought the materials came from when they sold the materials, and to do things more secretly, saying that now the north has entered the winter, and after the spring of the next year arrives at the breeding season, there will be more and more mutant monsters.

The Times Base plans to open a high-speed railway in the future, and if a certain area orders a large number of materials, the second high-speed railway of the era will be built wherever it goes.

I'm figuring it out now.

Of course, whether the specific opening is open or not, it is a matter of the future, and the second high-speed rail will definitely be opened, if it is registered, which area has more villages to buy materials, and which area will the high-speed rail also be opened.

But if there are few or even no villages in the area where the materials are purchased, then it is necessary to carefully survey this area.

Qing Xiran narrowed the scope of the investigation step by step, and it was in this situation that the analysis given by Qing Xiran showed that the Huang brothers were not far from death.

Hearing Qing Xiran say this, Wen Jing breathed a sigh of relief, she folded her hands together, and recited the sentence "Amitabha" to the starry night sky of Xiangcheng, and then calmed down a little.

In this way, within a few days, the leader of the laboratory of Section 1 of the Feihua Base was sent to Qing Xiran, and the bottom of the trading house and Quyang also came out, in addition, she sent a drone to follow the group of people who fled from the Feihua base, and also gave the direction of Qing Xiran.

The area to the north of the Northern Territory.

This area is a little more abundant, and there are the least survivors who have registered with the trading house in that area, but according to the data on the current survivor activities in the northern region, the northern region is not without survivors in the direction of the north.

On the contrary, there are quite a few survivors over there.

With so many survivors gathered in one place and few people shopping outside, how can their material problems be solved? There must be a mature production and supply system so that the survivors do not have a shortage of supplies at hand.

According to this inference, Qing Xiran continued to send drones in the direction north of the northern region, and listened to the signals of the survivors in that direction.

In the end, she targeted a former abandoned medicine factory.

It's just that Qing Xiran's drone disguised itself as a fake bird, and circled around this abandoned medicinal herb factory for several days in the sky, and judging from the surface architecture, this medicinal herb factory couldn't see anything at all.

However, the several villages that have been established around this medicinal herb factory have a bit of an armed scale, and they are larger than the villages next to them inside and out, and the armed formation is a bit like a garrison.

Just as Qing Xiran was planning to take a good look at the details of these villages, Xu You's side observed this mutant python, and it seemed to have the intention of retracting into the ground.

Because the body of this giant python has been staying in the crystal nucleus layer to absorb the crystal nucleus, and its body is getting bigger and bigger, if it wants to forcibly leave the ground, it is not impossible.

However, there is no crystal nucleus on the ground to support it.

The serpent was very clever and knew that if he left his den, it might be more difficult to go back, so his head was retracting.