Doomsday: My Shelter Unlimited Upgrades

Coming to the top of the refuge, Lin Tian measured the position.

Finally, at the top middle of the shelter.

Work started.

The significance of lighting is undoubtedly very important.

Not to mention how much impact living in a dark environment will have on people's psychology.

Sufficient sunshine can not only bring pleasure to people psychologically, but also has great benefits to people's body.

Through sunlight, it can promote the production of vitamin D in the human body, and it can also eliminate some influenza viruses in the body.

Increase the body's immunity.

More importantly, with the lighting, the shelter will no longer be as gloomy and damp as before.

It's just that if lighting is to be done, it must be done well.

There is no problem with the strength of the glass, but it must be waterproof.

A few days later, acid rain came.

It would be a disaster if the rain seeped in through the skylight!
While thinking, Lin Tian worked hard to dig the soil.

Soon, the mound of soil at his feet was more than 30 centimeters high.

Through the dug hole, Lin Tian also saw the exposed ceiling of the shelter.

However, how to install explosion-proof glass has become a problem.

The shelter is automatically generated by the system, and the wooden ceiling is integrated.

Drill holes and install glass rashly by yourself, it is very likely to cause landslides in the shelter!
After thinking for a while, Lin Tian suddenly had an idea.

After the explosion-proof glass was taken out of the warehouse, it was placed in the dug hole according to its position.

This is a skylight, this is a skylight, this is a skylight.
Lin Tian silently read a few words in his heart.

"Reinforceable item detected: Skylight (Normal)"

"Introduction: The skylight is very simple, the lighting is very poor, and the waterproofness is almost zero."

"Evolutionary Branch 1: Functional Evolution: On the basis of the original, the construction process of the skylight is strengthened. After evolution, it has good lighting performance and excellent waterproof performance. Required evolution points: 15."

"Evolution Branch 2: Material Evolution: On the basis of functional evolution, increase the toughness of the skylight so that the skylight can bear heavier weight and insulate the temperature. Required evolution points: 25"

This time, neither evolutionary branch is cheap.

Lin Tian didn't hesitate and chose 2 directly.

It only costs 10 more evolution points, but it can greatly strengthen the skylight.

No matter what you think, it's a good deal.

With the consumption of survival points, the three pieces of explosion-proof glass on the ground emitted bursts of white light.

It blends perfectly with the skylight of the shelter.

Sunlight poured into the shelter along the transparent glass.

Lin Tian wanted to test the strength of the skylight, so he pointed his foot at the skylight and tapped it twice tentatively.

The skylight didn't budge.

Lin Tian, ​​who became more courageous, stood up directly, and even jumped a few times on the skylight.

Still nothing with the sunroof.

A look of surprise appeared on Lin Tian's face immediately.

Putting the stone shovel in his hand into the warehouse, Lin Tian quickly returned to the shelter and took out about 20ml of well water.

Came back to the side of the skylight.

The 20ml of fresh water is to test the waterproof performance of the sunroof.

In two days, the terrible acid rain will come.

The waterproof measures of the shelter must be guaranteed!
This matter is extremely important!
Now, although Lin Tian has a lot of water resources, it is definitely not abundant.

It is already a very luxurious thing to be able to take out 20ml of fresh water for testing.

Dropping 20ml of fresh water onto the skylight, Lin Tian carefully let the water drop continue to advance at the seams of the skylight.

Moreover, it is also necessary to ensure that the water droplets will not deviate from the track and be absorbed by the soil next to them.

After spending half an hour, he finally verified it!

The waterproof of the sunroof is foolproof!
After the skylight was built, Lin Tian looked at the shelter again.

The more I look at it, the more I feel that my shelter is extremely simple.

And, now the walls of the shelter, whether it's the ceiling or the floor.

Still planks.

One disadvantage of wood planks is that they have poor waterproof performance.

And it is easy to absorb water.

If two days later, acid rain falls.

There is absolutely no way to defend against wooden shelters alone!

No, the material of the shelter must be upgraded!
Lin Tian returned to the refuge with a heavy expression, and touched the wooden wall with his hand.

It may be because he has been thinking about the overall strengthening of the refuge.

The option to strengthen the shelter as a whole popped up.

"Reinforcement target: unusually simple shelter (common)"

"Introduction: A very crude shelter with extremely poor waterproof performance, medium thermal insulation performance, and extremely poor earthquake resistance."

"Optional Evolution Branch 1: Function Expansion: You can expand your shelter, you can choose to expand downwards or outwards, and the enhancement consumes survival points: 250"

"Optional Evolution Branch 2: Material Enhancement: You can choose to strengthen the material of the shelter as a whole to stone, which greatly improves the waterproof performance, thermal insulation performance, pit town performance is extremely strong, and sound insulation is extremely strong. Enhancement consumes survival points: 650"

Holy crap, so many? ? ?

650 survival points is definitely an astronomical figure for Lin Tian now!