Apocalypse: I built the Supreme Sanctuary a year in advance

Chapter 19: Biological Air Circulation System

Logically speaking.

Xu Zhengyang first uses an engineering robot to dig a hole underground, and then outsources the decoration work, which is the most efficient and fastest way.

But Xu Zhengyang's shelter has now taken shape.

In this case, if I ask Chen Yong to help me with the work.

There are too many people and too many tasks to do.

It is inevitable that some unnecessary trouble will be caused.

Just when Xu Zhengyang was in trouble.

suddenly!

Subtitles flashed before his eyes from time to time, and surprisingly, a new time-limited challenge task was triggered:
[Limited-time challenge mission: Airtightness transformation (in progress)]

[Your shelter has been somewhat successful and can withstand most direct and indirect attacks.

but.

Airborne threats like viruses and poison gas can still easily tear through the defenses of your shelter! 】

[Mission Objective: Make your shelter airtight;
Create disinfection booths at the entrances of shelters;

Install an air circulation system inside the shelter.

[Mission time limit: 239 hours, 59 minutes, 58 seconds]

[Mission Reward: GX-2 Large Engineering Robot]

After seeing that the mission reward was a GX-2 large engineering robot, Xu Zhengyang's heart moved. It was really like a pillow being given to me when I was sleepy!

If there was a large engineering robot.

Xu Zhengyang doesn't need to rely on anyone else's help, he can complete the expansion of the shelter by himself!
but……

Airtightness modification, disinfection chamber, air circulation system...

When Xu Zhengyang saw the familiar but never encountered nouns in the mission objectives, he was overwhelmed and didn't know where to start.

However, the system prompts are also very reasonable.

After all, just follow the system prompts.

The first catastrophe of the apocalypse is the biochemical crisis. Xu Zhengyang doesn't know what medium the zombie virus in this world uses to spread.

But he didn't dare to gamble.

After all, Xu Zhengyang has built his shelter more and more perfectly. If he inhales the zombie virus because of air problems, it would be more trouble than it is worth.

Therefore, upgrading and renovating the shelter is imperative!

……

Ten minutes' time.

Xu Zhengyang did some research online and got some ideas on how to complete this limited-time challenge task and upgrade his shelter.

Retrofitting for airtightness is easy.

The titanium door of the shelter had already been tested for airtightness, so Xu Zhengyang only needed to block the seven ventilation holes in the shelter with concrete.
With the help of engineering robots, this task can be completed in just over ten minutes.

As for the disinfection chamber.

Xu Zhengyang had also seen this thing during the epidemic. It was nothing more than building an independent and enclosed room behind the door as an isolation room, and then installing comprehensive disinfection equipment. This was not difficult.

The final air circulation system...

In Xu Zhengyang's opinion, this thing would probably only be installed in a BSL-4 level biological laboratory, apart from the space station.

"So will this thing be sold to private individuals?" Xu Zhengyang asked anxiously.

While talking.

Xu Zhengyang continued to search online, trying to find a supplier of the same aerospace air circulation system as the Tiangong Space Station.

But he searched for a long time.

Apart from some news about the space station, no other useful information can be found on the Internet.
Without any choice.

Xu Zhengyang could only let his engineering robot build an isolation room behind the gate first, while he took out his phone to contact Chen Yong.

After a while, the call was connected.

"Uncle Chen, do you know where I can buy an air circulation system?"

… “Not air filtration.

It's like the air circulation system in our Tiangong space station, which is completely internal and doesn't require any outside air."

……

"I still say the same thing, Uncle Chen, don't ask. I can only say that as long as you can get it, you don't have to worry about the money!"

……

"Okay, thank you Uncle Chen. I'll wait for your call tomorrow morning."

……

After hanging up the phone, Xu Zhengyang couldn't help but sigh. Chen Yong had never heard of this thing, so he thought it was probably impossible for him to get it.

"Forget it, things will work out when the time comes. I'll take a rest today and figure out the rest tomorrow."

Xu Zhengyang had been traveling a lot these past two days and was already exhausted.

After finishing speaking.

He took a shower, then fell into the bedroom and fell into a deep sleep...

*
The next day, Xu Zhengyang got up very early.

After a night of work.

The engineering robot has built a disinfection room behind the gate according to the program preset by Xu Zhengyang.

Xu Zhengyang looked at the newly built isolation room and nodded with satisfaction. Then he ate something and drove his car to the city to buy disinfection equipment.

Three hours later.

After Xu Zhengyang installed the disinfection equipment, he built a disinfection room behind the shelter gate.

Chen Yong's phone call happened to come at this time.

Not surprisingly.

As expected, Chen Yong couldn't get the same aerospace air circulation system for the space station that Xu Zhengyang wanted.

"Ugh……"

After hanging up the phone, Xu Zhengyang sighed.

Seeing that this time-limited challenge task only had the last air circulation left and he had no clue at all, Xu Zhengyang became very annoyed.

Just when Xu Zhengyang was hesitating whether to contact Yan Xiaowei again to see if he had any help.

suddenly!

An idea suddenly flashed through Xu Zhengyang's mind, and he stood up, slamming his hands on the table, and said excitedly, "Wait!
The system only told me to build an air circulation system in the shelter, but it didn't require me to build what kind of air circulation system!

Why did I have to go to such extreme lengths to build a space station-style aerospace air circulation system in the shelter?!
I could definitely install some grow lights in the shelter and buy some large-leaved plants...

Thus……

Isn't a biological air circulation system formed?!"

The voice just fell.

Xu Zhengyang didn't care about his tiredness, went out again, and immediately rushed towards the Baicheng Flower and Bird Market!

*
A healthy person at rest needs about 10600 average-sized leaves to photosynthesize enough oxygen in a day.

If a person is in motion, he will need more oxygen!

A single plant provides very little oxygen to humans.

The easiest to grow potted green radish sold in flower and bird markets has about 50 leaves per plant.

In other words.

If Xu Zhengyang wanted to build a basic plant air circulation system in an enclosed shelter.

More than 200 pots of green ivy can meet his basic survival needs.

But just to be safe.

Xu Zhengyang finally bought 400 pots of green radish at the flower market, and also bought enough ultraviolet lamps.

Then he would have to buy at least 200 pots of green ivy!

But Xu Zhengyang did it for safety.

He bought a thousand pots of green ivy at the flower market, and also enough plant lights to ensure that there was enough oxygen in his shelter!
(End of this chapter)