Doomsday: My Shelter Unlimited Upgrades

Wet the soil completely with psionic water.

Lin Tian looked up at the shining stars outside the window, and climbed onto the wooden bed.

With the bedding obtained from the secret realm, the wooden bed is more comfortable to lie on.

It's just that there is a musty smell on the bedding.

If the weather is fine tomorrow, it is better to dry it.

Erbai raised his legs and jumped onto the wooden bed, and got into Lin Tian's arms.

Gently stroking Erbai's soft hair, Lin Tian fell into a deep sleep.

"Apocalypse calendar, January 1, year 1."

"The first time you entered the secret realm, you saw a different scene in the last days, and you were very surprised. (survival point +25)"

"You are very lucky to have successfully escaped from the secret realm. (survival point +10)"

"In the ruins, you have gained a lot of value, and you are very happy. (survival point +30)"

"You have successfully upgraded the simple water fetching device to the spiritual water fetching device, and obtained the basic healing ability. You are very happy. (survival point +15)"

"You slept very peacefully last night, and your mental and physical strength have fully recovered. (survival point +5)"

"Congratulations, you survived another day. We are evaluating what you did today. (Survival points +24)"

"In the final settlement, you have obtained a total of 109 survival points today, and a total of 213 remaining survival points."

Following the alarm-like reminder from the system, Lin Tian got up from the bed and stretched himself.

Erbai also jumped down, wagging his tail and rubbed against his leg.

Lin Tian bent down and touched Erbai's head.

I meditated, thinking about the shortcomings of my refuge.

The current shelters are definitely not enough to minimize the damage caused by the acid rain that will come in a few days.

In the beginning, Lin Tian's idea was to isolate the shelter from the outside world.

Create a fully enclosed space.

In this way, the acid rain does not penetrate, and naturally it will not cause harm.

But, not to mention whether such measures are really effective in preventing acid rain, one night's sleep made him aware of other problems.

The closed space creates no air circulation.

Human survival requires adequate oxygen.

The closed space just cuts off the air circulation, and Lin Tian can only consume the air stored in the room overnight.

Fortunately, the shelter has a fairly large space.

Otherwise, when the concentration of carbon dioxide rises after the oxygen is exhausted, people will first slow down their thinking and become more lethargic.

After that, it was a coma until he died of suffocation.

The previous path no longer works.

At this stage, there are two most important things.

One is to build out the air circulation system.

The other is to build a good drainage system.

Only after the two systems have been built can the most basic guarantee of survival in acid rain.

There are two difficulties in the air circulation system, one is the location where the circulation system is set up.

Another point, and the most important point.

To ensure the air circulation in the shelter, it is necessary to punch holes in the roof of the shelter.

But having holes means that acid rain can seep in through the holes.

These are two major issues that must be addressed.

The drainage system is not particularly difficult in terms of technology.

The only difficulty is that it needs a lot of materials, but he still has a lot of fresh water in reserve.

It is easy to exchange for materials to build drainage systems.

After making up his mind, Lin Tian took out the bread and chicken from the warehouse, and stewed a pot of chicken bread porridge.

Because of the seasoning, he ate very deliciously.

Erbai also bit his tail in circles while eating.

After eating, Lin Tian poured some water into the vegetable cultivation pot.

Lettuce is planted on the top layer, and green onions and tomatoes have not yet been sown.

The growth cycle of lettuce is about 40 days.

In other words, after 40 days at the latest, you can eat green vegetables.

After soaking the top layer of soil, Lin Tian glanced at the warehouse.

There is also 2500ml of psychic water and 800ml of normal fresh water.

Replace all 800ml of fresh water with resources today, and you can sell a small amount of psychic water tomorrow.

After making up his mind, Lin Tian opened the transaction list.

800ml of water seems like a lot.

But when Lin Tian really exchanged for resources and averaged out every kind of material, it seemed that he was not particularly abundant.

800ml of fresh water, Lin Tian exchanged a lot of minerals and other items.

These include quarry and iron ore.

This is mainly to avoid the need to spend a lot of repetitive labor to collect these materials when they are needed later.

Collecting these materials is not difficult, but it will consume a lot of time.

There are more uses for Lin Tian's time, so naturally he can't waste it here.

He exchanged 300ml of minerals, a total of more than 1000 units of iron ore and stone ore.

On average, 1ml of fresh water can get five units of minerals.

It takes at least 5 minutes for a person to obtain a unit of minerals.

After struggling for an hour, only 12ml of fresh water can be exchanged.

It's ridiculously cheap.

However, this is also their effort to survive.