My Doomsday Shelter Unlimited Upgrades

No problem!

Which one has the best hands-on ability, look for Chen Yang in the doomsday stadium!

Chen Yang praised his hands-on ability, and the system also popped up an upgrade prompt at this time.

【Simple Lightning Rod】:

Upgrade Direction 100: Change the structure of the lightning rod, greatly increase the ability to induce lightning and the safety factor, and need [-] survival points.

Upgrade Direction 300: Change the material of the lightning rod and add the discharge function, which requires [-] survival points.

System Comments: Touching it on a rainy day can open the door to Two-dimensional!

"Okay, your system? When you want to upgrade, you don't play the prompt for a long time, and when you don't want to upgrade, you play it all at once?"

Chen Yang complained that the lightning rod was only the second line of defense against lightning in the shelter, and he didn't want to upgrade it at this time.

The first upgrade direction is to make the lightning rod more professional.

The second upgrade direction is the discharge function. It sounds good, but now it is useless to discharge the electricity, and the electricity released cannot be collected. The electric barbecue already has a power grid outside the shelter, so there is no need for an electric wand.

After patting the dust off his body, Chen Yang left straight away.

There are not many Survival Points left in his pocket, so he can't spend them on this kind of tasteless upgrade for the time being.

Chen Yang quickened his pace a little. He did a lot of things on the spur of the moment today. It was less than an hour and a half before dark, so it seemed impossible to eat barbecue while watching the sunset.

It should be okay to set up a barbecue stand next to the shelter with the night wind blowing, provided there is no danger around the shelter.

Chen Yang only used the scanning function once at noon today, and did not use the scanning function at night for a long time, in order to wait for the arrival of the barbecue feast.

Speaking of a big meal, it’s actually not that big, it’s just an extra baked potato.

But even so, Chen Yang felt that this was something worth celebrating.

After all, this is the potato he planted himself, marking the resolution of the food crisis.

Back outside the shelter, Chen Yang made a wooden ladder and climbed to the top floor of the shelter.

Taking out the water pump in the system, Chen Yang aligned the control room downstairs on the roof, and placed the water pump down.

In the future, the second floor of the shelter will be developed. The location of the control room on the second floor should be the same as that on the first floor, so it will be easier to remember.

"In the future, when the shelter gets bigger, we will integrate everything into one room."

Chen Yang stared at the water pump and muttered to himself.

In fact, now Chen Yang can also install the water pump on the first floor. His shelter has only one floor, so he doesn't need to worry about water pressure.

But what Chen Yang did was also a way to diversify risk investment. If all the key equipment of the shelter were installed in one room now, once an accident happened in that room, the loss would be heavy.

Once the system is installed, the water pump is firmly fixed on the roof, and the base of the water pump is integrated with the roof, so there is no need to worry about the water pump becoming loose and falling off.

The goal of people in the tower has not yet seen the shadow, but the tower in the pump is realized first.

The installed water pump is also very simple to use, with three ports and one turn.

Three ports, water inlet, water outlet, power port.

One turn, one steering wheel to control the pressurization of the water pump, turn back and forth, and manually control the pressurization and water output of the water pump.

Before the end of the world, Chen Yang also saw the water pump twice occasionally. The real water pump is definitely not so simple to use. Fortunately, there is a system. The objects made or upgraded through the system are used by fools. As long as they are not ancient people, basically will use.

If not, just some wiring methods of the motor would be enough to give Chen Yang a headache for a while.

What are the three-phase wiring and Y-type wiring? Chen Yang learned some of them in professional courses before, but now he has lost them and forgotten them. He only remembers a few superficial ones. A lot of tuition.

Not only that, as long as the electrical appliances produced by the system have the same characteristics, including those in the bathroom.

Just a plug, just plug it into the power supply, don't worry too much.

"Sure enough, it's different after spending survival points!"

"Having survival points can make the system grind!"

After installing the water pump, Chen Yang arranged the water pipeline in the wall of the shelter through the construction function of the system.

The pipe is connected from the water pump to the external water tank. Chen Yang climbed down the ladder and upgraded the water tank.

[Record]: Alloy -15, Iron Block -5, Survival Point -200

【Top Water Tank】:

A water tank that can be placed on the ground and can be discharged in case of emergency.

Maximum capacity: 100L

Upgrade Direction 100: To increase the capacity of the water tank, [-] survival points are required.

Upgrade Direction 200: Change the material of the water tank to improve corrosion resistance and durability, [-] survival points are required.

Upgrade direction three: reduce the volume of the water tank, 3000 survival points are required.

[Please choose the location of the 'top-floor water tank'! 】

Looking at the introduction of the upgraded water tank, Chen Yang's focus was once again drawn to the 'upgrade direction three'.

"Reduce the volume of the water tank?"

Chen Yang thought for a moment. According to common sense, reducing the volume will reduce the water storage capacity of the water tank, but the system will never do this. Chen Yang has never seen the upgrade function of the system have the option to go backwards and downgrade, even if there is such a It doesn’t take so many survival points for 3000 survival points, he doesn’t even need so many survival points to rebuild a small water tank.

Looking at it from another angle, this upgrade direction is to reduce the external volume while keeping the capacity of the water tank unchanged!

In other words, there is an inner world in the water tank!

Chen Yang secretly looked forward to it. There are some rules to follow in the upgrade of the system, and the upgrade direction of many similar items is also similar.

Now his water tank is about half the height of a person, it is very heavy and huge, and it occupies a large area. In the future, there will only be more and more facilities and equipment in the shelter, and it will also occupy more and more land.

But the appearance of this function in the system means that 'miniaturization' is also a major upgrade direction of the system. Other objects may also have this upgrade direction, but it has not been developed yet.

In the future, I will make a water tank the size of a can and fill it with several tons of water. This is not only convenient, but it can also be used as a weapon, and it can be used as a killer weapon to carry with you.

In order to prevent forgetting, Chen Yang secretly memorized this idea several times in his heart.

"Survival is really not enough."

Chen Yang said with emotion, when there are only a few dozen survival points, think about a hundred, when there are a hundred, think about a thousand, and after getting a thousand survival points, start thinking about ten thousand.