Doomsday: Unlimited upgrades to the shelter

Chapter 166 Metal anti-acid treatment, upgrade water purification

[The system has automatically turned on the smart mode]

【Services】

[Metal plating: choose plating method]

[Electroplating objects: bare metal objects in basin valley]

[Anodizing (2000 points): Use electrochemical separation to form an oxide film on the surface of aluminum and aluminum oxides to achieve special anti-corrosion effects.Anti-acid resistance 20%]

[Electrophoresis (2000 points): change metal color, anti-corrosion, enhance metal performance, acid resistance 20%]

[Micro-arc oxidation (2200 points): use electrolyte to form a ceramic protective film, with an acid resistance of 35%]

[Physical weather deposition (2200 points): Use physical changes to generate a deposited film, with an acid resistance of 20%]

【Micro-arc oxidation】

【Whether to choose to upgrade】

【Yes】

[System points have been updated, there are 46101 points]

[System upgrade...]

Now the main task is to fight against acid rain, so it is natural to choose the most effective way to fight against acid rain.

Ceramics are not only resistant to high temperature but also resistant to various acids and alkalis, which seems to be a very good choice at present.

Just because the soil was more or less damaged to a certain extent, Xie Yannan had no choice but to use the system to repair it again.

[The system has automatically turned on the smart mode]

【Services】

[Soil pH restoration: 3000 points]

【Whether to upgrade】

【Yes】

[System points have been updated, there are 44101 points]

[System upgrade...]

drop……

The soil, which was still a little white just now, has returned to its normal color, and the entire air no longer smells so sour.

But the water in the pond has no way to completely deacidify and evolve, so it has to rely on time and the plants inside to transpire those harmful substances.

And now the water source is also seriously polluted. Although the shelter has special containers to collect rainwater, and then has purifiers to purify them, judging from Qin Xiaocheng's poisoning this morning, the purifier is not very powerful and the filtration is not good. Completely, it will still cause harm to the human body.

You can only add a pH value detector to the filter port. After all, weakly alkaline water is the most beneficial water source for the human body.

Install a tap water acid-base filter at the front end of the test port.There are food-grade hypophosphorous acid and sodium hydroxide in the filter, which are used to adjust the acidity and alkalinity of tap water respectively. After adjustment, the pH value is tested. Only after the test is qualified can it be used for drinking and use.
If the reference conditions are not met, the water will be cut off directly to avoid harm to the human body.

[The system has automatically turned on the smart mode]

[Installation of comprehensive acid-base equipment for tap water]

[Upload host design drawings]

【Service fee: 2000 points】

【Whether to upgrade】

【Yes】

[System points have been updated, there are 42101 points]

[System upgrade...]

Drop~
Soon, a pile of relatively large mechanical equipment was added next to the original water storage container, and the quality of the water source must be controlled from the source of the water source.

This is not a long-term solution.

Although the top of this valley is protected by laser rays and sugar cubes, it is completely open to the sky after all, and this kind of acid rain comes without warning.

Can't resist it at all.

It seems that we still need to find a way to upgrade this basin valley, at least add a roof.

Oh, no, now Xie Yannan is planning to call it a refuge, after all, the system has recognized that it is a first-level refuge.

He paused, planning to take some time to think about it.

Wei Xiaofei hasn't woken up yet, and she doesn't know what happened to her last night.

Ma Wu just took Xiaoxiao out of the valley to launch the pillars of the base tower, and he hasn't come back yet.Xie Yannan was a little worried, so he opened the gate of Bungu to look for it.

About 800 meters away from the shelter, Xie Yannan found Ma Wu and Xiao Xiao, who were still busy supporting the simple launch base tower. This was the raw material Xie Yannan had provided to Ma Wu before, and Ma Wu made it himself.

He quickly stepped forward to help, hoping to speed up their debugging progress.

But fortunately, everything is going well.

It seems that the cold wave is about to pass, and the weather has gradually warmed up.

Although I was still wearing a heavy cotton coat, I felt a lot warmer on my body.

"Uncle Ma, how far is the launch distance of this thing?" Xie Yannan looked it over, but the one-meter-high launch base tower is the most common and common kind in life. It is impossible to say how high-end it is. Yes, but it still looks like that.

"I guess there should be no problem within a range of 20 kilometers, but I have to test it to find out. I can't go that far now."

Ma Wu said truthfully, and while speaking, he took out two things as big as a mobile phone.

"This is a modification of two mobile phones I recycled. At present, it can only achieve single-ended communication. You will take it for a while, and it should be improved slowly later."

Xie Yannan took one of the mobile phones and tried to have a real-time call with Ma Wu.

The effect is pretty good. Although there is some noise, I can generally hear what the other party is saying clearly.

"Uncle Ma is really good. He knows astronomy from the top and geography from the bottom. Is there anything you don't know?"

Xie Yannan asked half-jokingly.

"There are too many..." From the looks of it, Ma Wu didn't seem to pay much attention to Xie Yannan, but he was still adjusting the frequency on the phone to reduce the noise.

Xie Yannan closed his mouth knowingly.

It's just that the more I debugged, the more I found that there were some very strange voices coming from the phone intermittently, as if someone was talking, but it didn't seem to be a human language.

"This..." Xie Yannan looked at Ma Wu suspiciously, "Uncle Ma, what is this?"

This was obviously a conversation between two unknown creatures, but Xie Yannan had never heard of these languages, so he couldn't understand what they said at all.

"It feels like other people's signals interfere with our signals and cross-wire our signals. So we can hear other people's voices. Of course, there is another situation where others deliberately wire our signals."

Ma Wu analyzed it and thought that the communication is not safe now, and signal debugging, filtering or strengthening is needed, that is to say, it cannot be used for the time being.

Xie Yannan nodded, intending to listen to Ma Wu first. After all, up to now, he has not found any details about Ma Wu's harm to him. Instead, he has been doing his best to help him.

"Is Wei Xiaofei awake?" It seemed that Ma Wu asked casually, but Xie Yannan's heart skipped a beat.

"Not yet. If she wakes up, she should be able to ask what happened. It's so strange."

Xie Yannan also found it strange that there was Ma Wu, Ma Wu was such a smart person, it was impossible not to realize that Wei Xiaofei was not her biological daughter, but he was willing to be questioned by everyone, which Xie Yannan never figured out.

(End of this chapter)