Doomsday: It’s not too much for me to hoard a strategic reserve

When Charlene heard this, she also said happily: "I can finally go back, this old hairy place is not happy!"

"The land of bitter cold!" Xia Yang said with a smile.

In fact, at the moment, the entire blue star is similar, and there is no place warm.

But psychologically, I definitely still feel comfortable staying in my country.

Mengmeng asked, "Brother Yang, how to plan the route back?"

Xia Yang said without hesitation: "Return the same way!" Go to the mining area of Mongolia, first take away the rare metals and iron ingots refined these days, fill the mining work base station with energy by the way, and then go to the Cocoto Sea! "

Actually, returning to Xia Country from this side is naturally the fastest way to go directly south.

But Xia Yang is now short of raw materials, and the production of that doomsday survival fortress has used up a lot of materials, and he urgently needs to replenish it now.

Although it is not long, whether it is Mongolia or the mining base station on the other side of the Kokoto Sea in the border province, it is estimated that there will not be many raw materials saved.

But talk is better than nothing! And by the way, the energy of the working base station can be filled.

In this way, the two base stations can last for about 100 days.

"Understood!" Mengmeng said, "Lieyang, let's go!" "

High in the sky, the tail of the Lieyang flashed with blue flames, and its speed increased sharply, flying towards the southwest at high speed.

In less than two hours, the Lieyang flew over the abandoned iron mine in Mongolia.

Xia Yang looked down from the sky, the sky and the earth were white, and some traces left by the previous days had long been completely covered by snow.

The Lieyang came above the mining work base station, slowly lowered its altitude, and finally hovered at a height of about one meter.

A snowdrift suddenly cracked, revealing the silver passage of the mining base station.

The engineering robot, which had already received the instruction, dragged a thick cable to the entrance of the cave.

The engineering robot inserted the cable head accurately into one of the external ports of the Lieyang.

The Lieyang began charging the mining work base station.

Xia Yang opened the hatch and jumped down, walking along the passage to the inside of the working base station.

Here you can see busy mining robots coming in and out.

However, they are all mined underground, and there are other passages in and out, and the passage mouth on the ground just now is basically not used.

Xia Yang made a simple tour - in fact, it is all fully automatic here, even if there are some minor failures, the engineering robot can handle it more easily, so the patrol can't see anything.

He symbolically spun around, and then received the rare metals and iron ingots refined in the small dimensional warehouse into the dimensional space.

Since it was only a few days since I left, the production was actually not high.

Especially rare metals, most of them are only tens of grams, and the most is hundreds of grams.

The refined iron ingots have one or two thousand catties.

After all, iron ore is widely distributed, and the grade is relatively high, and the weight of iron extracted per unit weight of ore is at least hundreds or even thousands of times that of rare metals.

Xia Yang did not stay long in this abandoned iron ore mine.

Because they have not been away for a few days, the energy consumption of the working base station is still very small, and it has been refilled with energy in ten minutes.

The three mining base stations took no more than an hour to walk down.

After leaving the iron ore area, the Lieyang soon crossed the Altai Mountains and entered the Xia Kingdom Frontier Province.

Xia Yang and Charlene were quite emotional - when they left, it was quite difficult to cross the mountains, but now the process of returning is so relaxed.

After a while, the Lieyang flew over the Cocoto Sea.

At the slag storage site on the south bank of the Irtysh River, the Lieyang once again slowly descended in altitude.

Xia Yang looked down from high in the air and found that the entire slag storage site was also completely covered with snow, and there was no trace of mining robot activity at all.

He couldn't help but be a little curious and casually asked Mengmeng.

Mengmeng explained: "Brother Yang, I optimized the mining procedure, during the unmanned period, in order to increase safety, all mining robots are approached from underground digging channels to the slag hill, so that it is not easy to be detected. And after the end of refining, the waste residue is basically sent back the same way.

"So that's the case..." Xia Yang suddenly realized, "This method is good!"

For mining robots, that's the old job.

And these slags are piled on the ground, they only need to make holes near a very shallow surface, and they are covered with thick snow, which can be said to be completely unconscious.

The Flaming Sun lowered its height, and on the slag hill where the entrance of the passage was hidden, a door parted, revealing a silver passage.

The engineering robot dragged the cable out, connected it to the Lieyang, and charged the base station.

Xia Yang walked along the passage to the inside of the mining work base station as usual, and collected all the rare metals refined by this base station during this time into his dimensional space.

The base station on this side of the Cocoto Sea works longer, and the slag here does not need to be mined hard, it is all piled above the surface! So the efficiency is naturally higher.

Here, the rare metals harvested by Xia Yang add up to hundreds of catties.

The most rare metal turned out to be more than a dozen catties.

This amount does not seem to be a lot, but in actual use, the consumption of rare metals is actually not much, and many are measured in grams.

For a simple comparison, the total amount of rare metals needed to be used in the process of the Lieyang rising to Class A does not exceed five hundred catties.

Of course, the dosage is not the same for different elements.

But in general, the output of the two mining sites in Cocoto Sea and Mongolia after 100 days of work should be enough for the Lieyang to be promoted to Class A, and the Doomsday Security Fortress to Tier B.

Xia Yang returned to the Lieyang and waited for less than half an hour, and the energy of the mining work base station was full.

The engineering robot recycled the cable and turned around and walked into the passage.

The passage is closed, the camouflage outside is restored, and this is again a plain hill of slag covered with snow.

"Sister, where do you want to go next?" Xia Yang asked with a smile.

Charlene said without hesitation: "If I have a choice, of course I want to go back to Sanshan to have a look!"

Xia Yang said with a smile: "The Sanshan side is estimated to be a dead city now, and it is difficult to turn into a source beast paradise." But if you really want to go and see it, let's keep a safe height..."

"Then forget it, in case there are any unknown risks?" Charlene said immediately.

She cherished her current stable and comfortable life more and more, especially Xia Yang was with her again, and in this case, she naturally did not want to put her brother in danger because of her little feelings.

Even the slightest possibility of this, she was unwilling.

Xia Yang smiled and said, "Okay!" Don't worry, sister, I believe that soon we humans will be able to counterattack coastal cities!

Charlene nodded heavily, and then asked, "So where are we going?" "