Doomsday: My Shelter Unlimited Upgrades

Lin Tian traded the remaining 500ml of fresh water for some food and other things that might be useful.

For example, one unit of copper ore, one unit of tungsten ore, and 2kg of chicken.

2kg of oil, a few dry batteries.

And, a head-mounted flashlight!
These things may not seem useful at this stage.

But if you look at it from a long-term perspective, it has a great effect.

With the development of the shelter, various technological facilities will inevitably be built.

Petroleum is the source of energy.

After closing the system interface, Lin Tian and Erbai walked out of the shelter.

Although there are still difficulties in the design of the ventilation system.

But he can take advantage of the current time to create a drainage system.

Lin Tian already had a plan in mind.

Dig a diversion ditch above the shelter first, and let the rainwater collect into the diversion ditch.

The ditch is then dug into a low ground to direct the rainwater to collect there.

This work is not difficult, but requires a relatively large labor force.

According to Lin Tian's idea.

Two days should be just right.

Finally, set aside a day to build the ventilation system, and replenish the reserves in the shelter by the way.

As soon as he said it, Lin Tian first took out a spear from the warehouse and drew a line half a centimeter deep on the ground.

The line runs all the way to the low ground, which is the point of the aqueduct.

This thing only took 10 minutes or so.

Next, just follow the guidance of the lines and keep digging drainage ditches.

Lin Tian kept waving a stone spade in front of him.

He didn't randomly pile up the shoveled soil on both sides of the ditch, but kept looking for the pit where the shelter was located.

stuffed inside.

If it is stacked on both sides of the ditch, it will act like a dam, preventing rainwater from collecting into the ditch.

After all, these pits are likely to collect rainwater and seep into the underground shelter, so they have to be guarded against.

Lin Tian and Erbai dug the soil very fast.

A whole morning without a break.

A distance of more than 100 meters was dug out.

However, the ditch that needs to be dug is too long, and Lin Tianyi's efforts in the morning are less than 20.00% of the total.

He knew that this matter could not be completed overnight, and that work and rest had to be combined, so he called Erbai back to the shelter.

Afterwards, the aroma of stew filled the room.

In the following time, Lin Tian and Er Bai repeated the action of digging.

And this repetition takes a day and a half.

During a break in the middle, Lin Tian also got the settlement reward for the fourth day.

A full 150 survival points.

Because the survival points from the previous day were not used much, now he has a total of 360 survival points.

In Lin Tian's view, this amount of points is already quite a fortune.

It took a day and a half to dig the diversion ditches, a little faster than the two days he predicted.

Looking at the long drinking water ditch, Lin Tian felt proud.

This is the first major project he has undertaken since he came to Survival Games, and it took a whole day and a half.

But digging the foundation trenches is only half the battle.

Because soil drainage ditches are prone to problems under heavy rain.

For example, blockage, landslide, or even being washed away, these are all possible.

It is necessary to transform the drainage ditch into stone as a whole.

He has already prepared the stone materials needed for the transformation.

The plan has already been thought out.

It just needs to be implemented.

After taking out more than 1000 units of stone from the warehouse, Lin Tian placed them around the ditch.

More than 1000 units of stone are too many, and all of them are taken out like a hill.

As for the foot of the mountain on the far side of the hill from the ditch, because it is too far away, it has exceeded the range that can be recognized by strengthening.

Lin Tian had no choice but to take part of it back into the warehouse and take it out again.

Divide a hill into three.

Afterwards, the enhanced interface of the system was opened.

"Name: Shabby Drain???"

"Introduction: The drainage channel dug on the ground is very crude, with extremely poor stability, extremely low safety, and medium water diversion efficiency."

"Strengthenable Branch 1: Functional Enhancement: Widen the width of the drainage canal, expand the depth of the drainage canal, so that it can accommodate more water, be more stable, and greatly improve drainage efficiency. Consumption of survival points: 25"

"Strengthenable branch 2: material enhancement: upgrade the drainage channel to stone to make it stronger, immune to the impact of water flow, greatly improved safety, greatly improved drainage efficiency, and greatly improved service life. Consumption of survival points: 50+ one Thousand units of stone."

A bit expensive.

Lin Tian was in a bit of pain, but because he knew it was a necessary expense, he still clicked on the strengthening branch 2 with his consciousness.

A thousand units of stone instantly turned into white light, which merged into the drainage ditch.

The drainage ditch is also wrapped in white light. Although the specific shape cannot be seen, it can still be felt through the outline that it is constantly changing shape.

Soon, the white light disappeared.

A surprised smile appeared on Lin Tian's face.