Upgrade direction three: Open up a five-kilometer underground shaft, change the working method of the generator, change it to a geothermal resource generator set, greatly improve the efficiency of the generator, and need survival points (36800)

"Good guy, I'm stupid. With 36,000 survival points, I will upgrade the geothermal power generation? Can't I upgrade to a more advanced psionic energy generator?"

It was the first time that the survival points given by the system exceeded four digits and reached five digits, and the first number in front was still 3, which made Sumo stunned for a while.

With so many survival points, even if you save up for a year without spending anything, you probably won’t be able to save so much.

"Oh, it would be great if this machine shaft could also add materials and reduce the price!"

"Um?"

While sighing, a bold idea suddenly appeared in Sumo's mind.

According to the difficulty of upgrading, these expenses must have been spent on well drilling, but Sumo remembered the expense of opening an escape passage.

When making something out of nothing, the cost of the system will be terrible, but when digging holes, this cost will be reduced without limit.

After trying to open the material list in the third upgrade direction, Sumo took a look and said: "Happy"!

Among the required materials, iron ore requires 5,000 units, and each unit costs 3 survival points. Copper ore requires 2,000 units, and each unit costs 5 survival points.

Get rid of these and provide a generator set, which can reduce 500 points, with a maximum limit of 6.

Providing an ordinary drill bit for drilling can reduce 500 points, and providing a diamond drill bit can reduce 2,000 points!

As for improving higher-quality drill bits, as the quality increases, the maximum points will be reduced by 4500.

In the best case scenario, if all these reductions are taken together, the cost of upgrading the generator set will be reduced to 4300 points.

If you can find some things you have never heard of and add them in, the final survival point you need is...

"2000 points! As long as I have 2000 points, I can have a generator that can produce at least 350 kilowatt hours of electricity every day. And because of my special ability, as long as I stop on time or upgrade its level, it is equivalent to..."

"Perpetual motion machine!"

Slowly spitting out three words that only Minke would say, Sumo looked at the resource cards in the storage space with burning eyes.

"iron ore..."

"Copper mine..."
Chapter completed!