As soon as they entered the alien base, Shu Xin and Lin Yucheng were surrounded by metal buildings with a sense of technology.

One protective cover, two worlds.

Inside the protective cover is an advanced extraterrestrial civilization; outside the protective cover is a prehistoric civilization that is difficult to survive.

In fact, human civilization is regressing at a speed visible to the naked eye and returning to the original state.

Under the pressure of survival, humans have to travel around hunting mutant animals and plants every day to earn experience values ​​and exchange star coins to purchase various materials needed to maintain their daily life.

As for other aspects of development, under the infiltration of radiation, under the destruction of mutated animals and plants, and under the help of humans, it has gradually disappeared into the long river of history.

"If I hadn't known that I had been on Earth since I was a child, I would have thought I had traveled to other planets now."

Every time I enter an alien base, Lin Yucheng feels a little emotional.

"Boss, what is the purpose of this alien coming to our earth?"

Shu Xin turned her head to look at Lin Yucheng, and after a moment of silence, she asked: "What resources do you think are there on Earth worthy of aliens traveling through the vast universe?"

Lin Yucheng frowned and thought: "I have thought about this question before, but I really haven't discovered any resources on Earth that can attract aliens."

After the aliens arrived on Earth, they actually did nothing.

Except for the initial light source that was put on the earth and digitized the earth, aliens have been staying at the alien base and rarely seen them go out.

If they really want to be interested in some kind of resource, they will definitely go to the field to test and study and explore.

Lin Yucheng looked at Shu Xin and asked with a smile: "Boss, what do you think is the purpose of aliens coming to Earth?"

Maybe it was because he came in too early and there were not many people in the base. Shu Xin glanced at these faces, and her spirit was obviously better than the crowd in the dungeon, and said lightly: "The aliens invest the most in any aspect, then what is his purpose."

"The most investment is, the aliens have not invested anything..." Lin Yucheng thought deeply. Suddenly, his eyes suddenly opened and he looked at Shu Xin, who looked calm beside him in fear.

"Boss, you mean...the purpose of aliens is...we...human?!"

Protective shields, alien bases, alien malls, these are all the investments of aliens, and the targets are the Earthlings.

Lin Yucheng's voice was a little loud, which made many people around him look at them. Shu Xin was a little dissatisfied with this and glared at Lin Yucheng: "Is this difficult to guess? It shocks you like this!"

Lin Yucheng could no longer care about Shu Xin's emotions: "No...Boss, what do they want to do?"

The interstellar battlefield requires a large amount of cannon fodder, and Earthlings reproduce fast enough is a very good choice.

Shu Xin quickly passed this in her heart. When she looked at Lin Yucheng, she said angrily: "Ask me, who will I ask?"

Seeing that Lin Yucheng wanted to say something, Shu Xin stopped it directly: "Okay, it's useless to think about these things now. You have such a low strength. It's still unknown whether you can live well. Thinking so much is like what problem you can solve."

When the problem was not solved, Lin Yucheng felt itchy and wanted to ask Shu Xin, but Shu Xin looked like she was not interested in other things, which made him unable to get in.

The alien base is divided into five regions, east, west, south, north and middle.

The Alien Mall is built on the central square in the middle.

After traveling through a few streets, the alien mall appeared in Shu Xin and Lin Yucheng's sight.

On the central square, silver-white rectangles with metallic luster are about one meter away, centered on a launching column that is hundreds of meters high, and are distributed in a circular shape from outside to inside.

From a high altitude, there are 5 circles surrounded by silver-white rectangles.

From outside to inside, the first circle, that is, the outermost circle, generally sells e-class equipment and materials, which are open to everyone.

In the second circle, the D-level equipment and materials sold are only open to warriors of level 2 (inclusive) or above;

In the third circle, the C-level equipment and materials sold are only open to warriors of level 3 (inclusive) or above;

In the fourth circle, the level B equipment and materials sold are only open to warriors of level 4 (inclusive) or above;

The fifth circle, that is, the innermost circle, sells A-level equipment and supplies (a small amount of S-level equipment), and is only open to warriors at level 5 (inclusive) or above.

After the earth's dataization, the soil composition has been changed and it is no longer suitable for growing food. At the same time, the radiation value in animals and plants has seriously exceeded the standard and humans can no longer eat it directly.

This leads to the fact that before finding ways to remove radiation from animals and plants, human food sources were destroyed.

In this way, the alien mall has become an indispensable part of human life.

At this moment, each silver-white rectangle in the outermost circle was lined up in front of each silver-white rectangle, with fewer people in the second circle, fewer people in the third circle, and not one in the fourth circle and fifth circle.

The further the warrior level, the harder it is to increase, and there are too many experience points required.

A level 2 warrior needs 100,000 experience points to level 3; a level 3 warrior needs 100,000 experience points to level 4, which does not include the experience points to be consumed in daily life.

Take Shu Xin as an example. Now her experience value is 58,500. After purchasing the prepared materials later, if she uses up her experience value, if she wants to upgrade to level 3 warrior, she has to earn 100,000 experience value.

Lin Yu wanted to line up to buy e-level equipment and supplies, but when he saw Shu Xin went directly to the second lap, he looked at him before leaving. He knew how to look at the winks and immediately followed him.

The two walked towards the second circle, and everyone nearby looked up.

In fact, when purchasing materials and equipment, you can roughly see a person's strength.

Like a level 3 warrior, it is absolutely impossible to appear in the first lap.

Seeing the two stopping in the second lap, everyone withdrew their gaze.

He is likely to be a level 2 warrior, not a strong man.

There were relatively fewer people in the second circle. Shu Xin and Lin Yucheng waited for a while before it was their turn to buy it.

When someone wants to buy a product, just put his hand on the rectangle, and a transparent light curtain will pop up above the rectangle, and various equipment and materials will be displayed on the light curtain.

The previous person left, the light curtain disappeared, and the latter person continued.

It was Shu Xin's turn, Shu Xin put his right hand on the rectangle, and in an instant, a blue transparent light curtain popped out.

"A 58,500 experience points were detected, were they all exchanged for star coins?"

"whether"

As soon as the light curtain appeared, these two lines of words appeared.

Shu Xin clicked ‘Yes’.

Soon, the data in the star coin column became 5860. (The original 10 left in 5850)

Immediately afterwards, icons appeared on the light curtain.

Level 2 nutritional agent: 5 star coins, which can maintain the energy consumption of life bodies with level 2 constitution in one day;

Level 2 energy liquid: 10 star coins, replenish water and remove certain radiation values ​​from the body;

Level 2 Trauma Spray: 100 Star Coins, which can quickly stop bleeding, scab, and heal the wounds of the living body with level 2 constitution;

n2 dose: 200 star coins, within level 2 physique, improve one physical point;

Level 2 antitoxic agent: 100 star coins, which can exempt level 2 physical life bodies from all poison gas and venom hazards, and are valid for 3 days;

D-class combat uniform: 500 star coins, can withstand radiation upper limit of 1000;

D-class combat boots: 100 star coins;

D-class gloves: 50 star coins;

D-level double swords: 500 star coins, can kill 2-level mutated animals and plants, and a few 3-level mutated animals and plants (before body particle 500);

Night vision goggles: 50 star coins (10 meters), 100 star coins (50 meters).

......

There are many more after that, but Shu Xin didn't see it anymore, and she didn't need the rest.

After some selection, when leaving the alien mall, Shuxin’s equipment column showed: 20 level 2 nutritional agents, 20 bottles of level 2 energy liquid, 5 bottles of level 2 trauma spray, 5 pieces of level 2 antitoxic agents, D combat uniforms, D combat boots, D gloves, and D double swords.
Chapter completed!