Designing Ventilation and Lighting

"Let's think about how to modify the base's ventilation system first. This is a major problem for underground Shelters."

Sitting on the slightly uncomfortable Wooden Chair, Su Mo began to recall his knowledge from the civilization era.

As well as the Shelter designs in various doomsday movies. Underground Shelters require a large air filtration and regulation system, but any ventilation pipes exposed outside would become a security risk.

Therefore, in Su Mo's vision, it would be best to use an internal circulation system, but the prerequisite is water and electricity. This would allow for the electrolytic production of oxygen, which would provide the possibility for internal air circulation throughout the facility.

Of course, it can't be completely sealed off from the outside world. Such a completely sealed environment has extremely poor stability. Ventilation holes leading to the outside are still necessary.

For the sake of concealment, these vents cannot be too large and must have sealable switches that can be closed at any time.

If it weren't for terrain restrictions, setting the vents under rocks exposed at low water levels in riverbeds, or on uninhabited islands, would be the optimal solution.

These slender pipes could draw fresh air that has been purified and filtered into the bunker, and could be closed in critical moments to use internal circulation.

But with the current conditions and equipment in the Shelter, this idea can only remain a concept.

After checking the items currently for sale on the trading channel, Su Mo decided to use the most mechanical design.

Using the periscope structure of a submarine.

Opening a window in the very center of the Shelter that serves as both a ventilation and lighting source.

The specific design is to first dig a cavity directly above the Shelter and install glass with good light transmission.

And punch holes in the glass to ensure that air can circulate through the pipes.

Going down along the dug-out cavity, a "Z" shaped turning hole can be made in the middle of the cavity.

Install two parallel plane mirrors at a 45-degree angle to the incident light inside the "Z" shaped hole. The incident light is transmitted into the Shelter through two reflections, solving the problem of daytime lighting.

After the first layer of ventilation glass, a mechanical Bulletproof Glass can be designed to ensure that the Bulletproof Glass can be closed in the event of a disaster to prevent liquid or toxic air from flowing in.

Such a simple design, even a high school student could come up with it, but putting it into practice would be a lot of trouble.

Without the right tools, it would be a huge project to drill all the way down to the five-meter-deep underground Shelter while ensuring accuracy.

But "I have the system!"

With his current understanding of the system, Su Mo is completely clear about how to use it.

When there are no materials, the system wants to use Survival Points to create materials out of thin air, which is extremely costly.

But when materials are available, the system functions more like a construction team, requiring only a small amount of Survival Points to achieve the upgrade goal.

After thinking it over and confirming the feasibility, Su Mo opened the trading channel.

Currently, his available resources are: ordinary mineral water (1000ml), Psionic Water (600ml), and 10 jin of Large Rye Bread.

As for the remaining pet egg and the energy bicycle blueprints, he does not plan to put them up for trade.

Trading channel.

[Seller: Su Mo]
[Trading Item: 50ml Psionic Water]
[Required Item: Bulletproof Glass]
[Remarks: Water that can strengthen the body, don't miss it, only accepting two units of glass, private message for good quality]

[Seller: Su Mo]
[Trading Item: 15ml Mineral Water (Maximum 975ml)]
[Required Item: 1 Iron Block (Single person can exchange 1/1 times)]
[Remarks: Each person can only complete one transaction]

After successfully listing the two items, Su Mo spent another 25ml of water to purchase two units of mirrors with good reflective properties, using up all the ordinary mineral water.

Su Mo exchanging 15ml of water for 1 iron block is an extremely black-hearted merchant behavior, but for some players struggling on the line of life and death, it is no less than a savior's act.

In addition, Su Mo has his own plans for limiting each person to only one transaction.

Water, as liquid gold now, he wants it to be consumed, not hoarded by some people with ulterior motives.

World Channel.

"Anyone short on water but has iron, hurry to the trading channel, Su god is selling water again! Only one trade per person, hurry!"

"Damn, Su god is generous!"

"Hehe, you're too late. Luckily, I followed Su god's personal channel in advance and managed to grab a sip. Look at Su god's forty-plus thousand followers now, how could you casuals possibly get any?"

"Where did Su Mo get all this water? Yesterday he spent 700ml buying the illustrated handbook, and today he's using 1000ml to collect iron. Does he think he has too much?"

"Hurry and look, the Psionic Water Su god is selling can actually strengthen the body and cure diseases! He only wants Bulletproof Glass, whoever has it, go exchange it quickly!"

"Sigh, comparing oneself to others is infuriating. I've been digging all morning and haven't found a single drop of water. I'm dying of thirst."

With only one chance to speak each day, a large group of people gathered in the World Channel to discuss, not to mention the lively scene in the Area Channel.

Even Su Mo's personal private messages were flooded.

First, in less than two seconds, the iron blocks he put up for sale were all traded. 65 units of iron blocks now lay quietly in his inventory.

Even then, countless people were offering other resources, clamoring for a sip of water.

"Water is too sought after!"

Su Mo mused to himself.

These past two days, others were putting up resources to buy water, but he was using water to exchange for resources, naturally making him seem unique.

Using the filtering function in the private messages, Su Mo filtered out 80% of the useless messages using the keyword "iron blocks."

Then, using the search function, he picked out dozens of private messages containing "Bulletproof Glass" and began to review them.

After flipping through many messages wanting to buy more water with ordinary quality Bulletproof Glass, Su Mo finally found an eye-catching one.

Feng Mengyue: "Su god, I have a piece of ordinary quality Bulletproof Glass, but I'm sure you won't like it. If you're willing to increase the price, I can trade you a piece of Fine quality and a piece of Rare quality Bulletproof Glass."

The avatar was a delicate-looking woman with a heroic spirit.

Seeing "Fine" and "Rare," Su Mo's eyebrows jumped, and he smiled.

The current quality divisions are temporarily Ordinary, Fine, Excellent, Perfect, and Rare.

Feng Mengyue, a woman, was able to obtain Rare quality Bulletproof Glass on the second day of the game. Her luck was evident.

"She wants to raise the price as soon as she opens her mouth, but doesn't offer a price. Seems like a tricky character."

Su Mo shook his head, not falling for it, and counterattacked with a reply.

Su Mo: "You should understand the current value of Psionic Water. Among so many things on the market, only I have something that can improve physical fitness. As for Bulletproof Glass, I'm buying it to replace the windows of the Shelter. It doesn't really matter if it's good or bad."

Feng Mengyue: "300ml, is that okay?"

Su Mo: "Don't even think about it. Two pieces of glass aren't worth that much. If you don't want it, I'll drink it this afternoon."

Feng Mengyue: "Let me consider it."

Seeing the other party's reaction, Su Mo chuckled.

He was the only one selling Psionic Water on the market, making it an absolute seller's market. Once he decided not to sell, the buyer could only stare blankly.

Two minutes later, Feng Mengyue's message came again.

Feng Mengyue: "Two pieces of glass, plus a piece of information, for 300ml of Psionic Water."

Su Mo: "What information?"

Feng Mengyue: "Information about how I obtained these glass pieces."

Looking at the words in the chat box, Su Mo thought for a moment and then chose to agree.

In the apocalypse, materials have a price, but information is priceless.

Like killing the Chameleon, without sufficient information, he would probably only be delivering food even if he went there fully equipped.

He put it on the private trading channel, uploaded 300ml of Psionic Water, specified the seller, and the transaction was completed.

[Record]: You lost 300ml of Psionic Water.

[Record]: Congratulations, you obtained Bulletproof Glass (Fine) *1, congratulations, you obtained Bulletproof Glass (Rare) *1.

[Record]: Do you want to extract the glass intelligence? "Extract."

As the words fell, a voice played in the empty Shelter.

"Ruins will randomly refresh in the wilderness. When I woke up today, a mysterious ruin refreshed next to me. It looked very dangerous, so I only scavenged a few pieces of glass from the periphery. By the time I wanted to continue exploring, the ruin suddenly disappeared."

Is anyone reading this? It feels like I'm playing a single-player game. Waaah, I'm crying... (Waaah, waaah, waaah)