Doomsday: Unlimited upgrades to the shelter

Chapter 119 Upgrade Level [-] Shelter
Qin Xiaocheng briefly sketched it with a pen and paper.Since Xie Yannan brought back so many things from the outside, Bengu's daily life has improved a lot. At least he doesn't need to look for stones on the ground, and pull out a clean surface for writing and drawing.

There are quite a few notebooks, pencils, and erasers that should be available now, and everyone has a copy, which is regarded as the necessities of daily life.

Although the current floor of Bungu is still messy, given time, Xie Yannan has already made a plan in his heart, and he must make all of them into at least a concrete floor.

"Actually, it's just a wastewater storage tank, a distillation system, and a purified water storage tank, right? Now the pond has enough water, and when it rains, the rainwater can be used directly to support the fish in the pond."

Xie Yannan sighed, this journey is really not easy, and I can finally be promoted to a higher level.

"No, Xiao Xie, you overlooked a problem. There is too much pollution in the air now, and acid rain often occurs. Although rain with low acidity does not have much impact on survival, but..."

Ma Wu frowned.

"But if it is acid rain that is too acidic, it will directly destroy everything you have here. And there will be a big acid rain here when spring comes, and it is only more than two months from now. In addition to acid rain, there are also locusts... ..."

It's amazing, Xie Yannan always thought that in the last days there were only those mechanical zombie-like things, but he didn't expect that all kinds of mutations could be encountered here.Not to mention all kinds of mutated creatures, there are also extreme weather and natural disasters.

A long way to go, a long way to go...

Xie Yannan sighed, feeling that he would probably be trapped here for the rest of his life, and felt extremely uncomfortable.

"Let's do this first. We'll talk about the acid rain later. Anyway, there are still more than two months."

According to the current situation, Xie Yannan is not sure whether he can survive these two months.

Xie Yannan plans to use cement to build both the wastewater storage tank and the purified water storage tank.There is still a lot of cement from the last time, and it is enough to build two large containers like this.

After the construction is completed, the drainage of wastewater will also be carried out. In the future, all wastewater generated in the basin valley will be drained into the wastewater storage.

The heater is installed on the top of the waste water storage tank, and the heater is surrounded by a circle of condensers.

The entire heater is in the shape of an inverted funnel.The transpired water flows along the funnel to the edge of the condenser, is pre-condensed by the condenser, and directly forms water, and then flows into the clean water storage tank along the edge of the condenser.

Of course, it doesn't just fall into it directly, it has to be filtered by a layer of pp cotton. The production of pp cotton is very simple, it is equivalent to the cotton cloth pressed by countless cotton, and then the cotton cloth is squeezed together to make it into the shape of a cylinder, and the seat distilled water is dropped into the clean water storage tank for the last purification process.

Xie Yannan's garment factory can completely make pp cotton by selecting the best cotton. Although this is also a consumable, the filtration loss is much better than the previous filter element.

After doing all this planning, he started to act.

[The system has automatically turned on the smart mode]

【Services】

[Build cement storage *2: 2000 points]

【Do you need the system to generate drawings】

【no】

【Upload idea drawings】

【Whether to build】

【Yes】

【Taking cement】

[System points have been updated, there are 30979 points]

【The system is under construction...】

About ten minutes later, when Xie Yannan was taking a nap, two cylindrical cement storages stood at the position Xie Yannan originally planned.

There is about five meters between the two cement storages, and the five-meter pipes will be filled with pp cotton.

Of course, Xie Yannan is not stupid. Not all the waste water in Bungalow will be used in this way. It is just the water for daily washing and washing. If it is not enough, it can be supplemented with rainwater. Rainwater is collected in sewage according to the level of sewage. box.

Just like the water in the cycle of human grains, it should be used as fertilizer, but it should still be used as fertilizer.

After the pipe and pp cotton were finished, Xie Yannan heard a few loud sounds from the synergy, like the sound of setting off firecrackers.

[Congratulations to the host for completing the shelter upgrade]

[Current Shelter Level: Level [-]]

【Please make persistent efforts】

[System Rewards 10000 Points]

[System points have been updated, there are 40979 points]

Xie Yannan didn't expect the system to be so user-friendly now. He originally thought that he could only get points after completing the five-level upgrade. It seems that he can get points for every level up.

But this level of refuge has already made him rack his brains. A small piece of world that can be completely self-sufficient in basic necessities of life can only be called a first-level shelter.

It seems that this second-level refuge can no longer rely on their own imagination. It is still necessary to purchase the blueprint of the system in an appropriate amount and upgrade it step by step according to the plan of the blueprint.

Xie Yannan stretched his waist, the defense of the system is now very strong, as long as a few cannons are not used to directly blast a hole in the mountains around the valley, except for the weak defense of the gate, the rest of the place will not even be able to fly a mosquito Come in.

But defensive capabilities and offensive capabilities are separate.He didn't have any weapons that could be used properly, and even a car that others discarded casually, he felt like a treasure.

Thinking of the car, Xie Yannan remembered that when Wei Xiaofei and Wei Xiaofei were doing homework in the car, they vaguely saw a piece of rolled up paper in the corner of the car.But I didn't pay attention when I was excited, and then I forgot.

He quickly climbed into the car and found the roll of paper.

Fuck!It takes no effort at all.

This special one is a quarter of the map, Xie Yannan quickly scanned it into the system for storage and comparison.

Now he has got three-quarters of the map, which is indeed something to be happy about.

but……

The most critical gap is in the remaining quarter of the map.

He briefly traced the three-quarters of the map with his hands. Even if these locations could be eliminated, the area to be searched would still be several thousand square meters at least.

Although it doesn't sound far away, the location of this weapon must be very hidden. Without accurate coordinates, it is impossible to find it.

And for very high-tech things, the system seems to have obstacles in recognizing them.

It's just how to get the other quarter of the map? !Xie Yannan had another difficulty in his heart.

[Generate 251 degrees today, get 251 points]

[4.2 tons of purified water today, get 4200 points]

【Purify 2.9 square meters of natural gas today, get 2900 points】

[All humans in the shelter survive for more than 24 hours and get 100*7 points]

[System points have been updated, there are 49030 points]

【One anti-epidemic pill】

[Sell or store]

【Sale】

[System points have been updated, there are 59030 points]

(End of this chapter)