The End of the World: I built the Supreme Shelter one year in advance

Logically speaking.

Xu Zhengyang first used an engineering robot to dig holes underground, and then wrapped the decoration work, which was the most efficient and fastest.

But Xu Zhengyang's shelter has now begun to take shape.

If Chen Yong asked him to help him with his work in this situation.

Many people and mixed hands.

It is inevitable that some unnecessary trouble will occur.

Just when Xu Zhengyang was in a dilemma.

Sudden!

Subtitles flashed in front of him from time to time, and another new limited-time challenge mission was triggered:

[Limited time challenge task: airtight transformation (in progress)]

[Your shelter has achieved some success and can resist most direct and indirect attacks.

but.

Air threats like viruses and poison gas can easily tear apart your shelter's defense! 】

[Task objective: Airtight modification of your shelter;

Create disinfection bins at the entrance of the shelter;

Install an air circulation system inside the shelter]

[Task Limit Time: 239:59:58]

【Task Reward: GX-2 Large Engineering Robot】

After seeing that the mission reward was a large GX-2 engineering robot, Xu Zhengyang felt aroused in his heart. He was so sleepy that he was giving him a pillow!

If there was a large engineering robot.

Xu Zhengyang did not need to lie to others in his guise, and he could complete the expansion of the shelter with just himself!

but……

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

When Xu Zhengyang saw the familiar nouns in the mission target that he had never been exposed to, he couldn't help but have one big head and two big ones, not knowing where to start.

However, the system prompts are also very reasonable.

After all, follow the system prompts.

The first catastrophe in the end of the world was the Resident Evil. Xu Zhengyang didn't know what medium the zombie virus in this world was spread.

But he didn't dare to gamble either.

After all, Xu Zhengyang has built his shelter more and more perfectly. If the zombie virus is inhaled due to air problems, it would be too much of a loss.

Therefore, upgrading and renovating the shelter is an imperative thing!

...

Ten minutes.

Xu Zhengyang checked online and had a little idea about how to complete this limited-time challenge task to upgrade his refuge.

Airtight modification is easy.

The titanium door of the shelter has already undergone airtight testing, so Xu Zhengyang only needs to block the seven air-changing ports of the shelter with concrete;

With engineering robots here, this task can be completed in more than ten minutes.

As for the disinfection warehouse.

During the epidemic, Xu Zhengyang also saw this thing. It was nothing more than building an independent and closed room behind the gate as an isolation room, and then installing all-round disinfection equipment. This is not difficult.

It's the final air circulation system...

In Xu Zhengyang's perception, except for the space station, this thing is probably only installed in BSL-4-level biological laboratory.

"So will this thing be sold to private?" Xu Zhengyang said nervously.

While talking.

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

But he searched for a long time.

In addition to finding some news about the space station online, no other valid information can be found.

In helpless.

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

After a moment, the phone was connected.

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

...

“Not air filtration.

It is an air circulation system like the one in our country's Tiangong Space Station that completely circulates and does not require the participation of external air. ”

...

"The same thing, Uncle Chen, don't ask. I can only say that as long as you can get it, you will never have to worry about money!"

...

"Okay, then I'll trouble 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 before, and he thought that it would be 80% impossible.

"Forget it, the boat will naturally straighten when it reaches the bridge. Let's take a break today, and let's talk about the rest of the day when you get up tomorrow."

Xu Zhengyang has been exhausted in the past two days and has been exhausted.

After saying that.

No mistakes, one song, one content, one in 6, one book, one bar, one reading!

He went to take a shower, then fell head-on in the bedroom, and fell into a deep sleep...

*

The next day, Xu Zhengyang got up early.

After a night of work.

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

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

Three hours later.

Xu Zhengyang installed the disinfection equipment and built another disinfection room behind the shelter gate.

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

No surprise.

Chen Yong really couldn't get the same aerospace air circulation system as Xu Zhengyang wanted.

"well……"

After hanging up the phone, Xu Zhengyang sighed.

Seeing that the final air circulation was left in this limited-time challenge mission, Xu Zhengyang was very upset.

Just when Xu Zhengyang was hesitating whether to contact Yan Xiaowei again to see if there was any way he could do.

Sudden!

Xu Zhengyang's mind flashed, so he stood up excitedly slapped the table and said excitedly, "Wait!

The system only said that I was asked to build an air circulation system in the shelter, but I didn’t ask me to build any air circulation system!

Why do I have to be stubborn and build a space air circulation system with the same type as the space station in the shelter? !

I can completely install some plant lamps in the shelter and buy some large leaves of green plants...

In this way...

Isn’t a biological air circulation system formed? ! ”

Just finished speaking.

Xu Zhengyang did not care about his fatigue and went out again and immediately rushed towards the direction of Baicheng Flower and Bird Market!

*

When a healthy person is resting, the oxygen required for about 10,600 average-sized leaves are needed for photosynthesis in a day to be sufficient.

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

Single plants provide very little oxygen to humans.

The easiest potted green ivy in the flower and bird market, each plant has about 50 leaves.

That is to say.

If Xu Zhengyang wants to build a basic plant air circulation system in a closed shelter.

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

But for safety reasons.

Xu Zhengyang finally bought 400 pots of green ivy in the flower and grass market, and also bought a sufficient amount of ultraviolet lamps.

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

But Xu Zhengyang is for safety.

I bought a thousand pots of green ivy in the flower and plant market, and in addition to this, there are enough plant lamps to ensure that enough oxygen can be produced in my shelter!