Doomsday: an Unlimited Material Every Day

However, at this moment, Fat Tiger blocked the three who were about to leave.

Quite spiritually, he stretched out his front paw and waved in mid-air.

Then, turn around and leave.

Tian Xiaoyu looked at Fat Hu who was going away, and said, "Fat Hu told us to wait, it seems that there is something to give us."

It happened suddenly.

Even Tian Xiaoyu, the beast master, didn't know what his tamer wanted to do.

After all, there are communication barriers, and it is impossible to communicate with each other.

As long as [Familiar Beast] is not interrupted, no matter how far Fat Tiger goes, he will come back.

This is the maintenance of the two parties brought by [Familiar Beast]!

Chen Dong shrugged indifferently.

"Anyway, there is no delay, just wait."

Although he didn't know what Fat Tiger was doing, his intuition was right.

Sure enough, Fat Tiger came back soon.

With a stone in its mouth.

Fat Tiger ran to Tian Xiaoyu on a catwalk, and spat out the stone in his mouth.

Tian Xiaoyu washed away the dirt on the stone with water and picked it up.

Afterwards, Tian Xiaoyu exclaimed.

"Chen Dong, Fat Tiger gave us a big baby!"

Chen Dong took the stone, his eyes lit up.

This is a necessary item to upgrade the advanced underground fortress!

【Energy Stone】

It can provide energy for high-level underground fortresses, which can be used to recycle ecosystems, and cannot be replaced by other energy sources!

This is a platinum-level item!

Moreover, only this energy stone is needed to upgrade the high-level underground fortress.

Of course, a large amount of basic materials are also needed as materials.

But for other materials, Chen Dong just obtained dozens of pieces of S-alloy and several thousand kilograms of concrete from the rings of Saturn, more than enough!

I thought that there would be no chance to upgrade before the meteorite rain came.

Unexpectedly, I got the energy stone by accident!

Although, their intermediate underground fortress is actually enough.

After all, many survivors have only rudimentary underground bunkers.

But who would want to make their home more luxurious and comfortable?

Holding the energy stone in his hand, Chen Dong laughed loudly.

"Go! Go home! Upgrade the advanced underground fortress!"

"Fat Tiger is really a lucky general. When we meet for the first time, we will offer you a big gift!"

Double happiness came, and the three of them happily returned to the villa area.

After arriving home, Chen Dong immediately started preparations for the high-level underground fortress.

Time waits for no one, the meteor shower has entered the final countdown...

This coming catastrophe completely tore apart the ugliest side of human nature at the last moment.

A few days ago, the announcement of the meteorite rain was released, and the survivors were still rational.

At the last moment, the survivors who hadn't collected enough supplies began to kill each other.

More ruthless than before!

This is a last-ditch fight for life and death, and it will only get crazier.

Crazy enough that even if he knew Chen Dong's strength, he would go head-to-head and be killed by the automatic defense armed system.

There is another possibility.

It is these survivors who know that there is no hope of survival and kill themselves.

This is why Chen Dong was so excited when he saw the energy stone.

The current value of this thing far exceeds that of ordinary platinum-level materials.

Under special circumstances, it is not an exaggeration to say that it is worth a lot!

--

The author says:

Tomorrow the meteorite will come

Chapter 128 Upgrade the advanced underground fortress and pierce the window paper

Chen Dong took out the materials for upgrading the high-level underground fortress.

Click System Assistant to start the upgrade.

[Dear survivors, do you need to upgrade the advanced underground fortress? 】

【whether】

Chen Dong clicked the OK button.

In the system window, the materials required for upgrading the advanced underground fortress are displayed.

Power Stone: (1/1)

S alloy: (138/50)

Concrete: (2892/2000)

Putting in the required materials, Chen Dong saw another change in the underground fortress.

First of all, the area of ​​the underground fortress has expanded again.

This time, it directly extended out of the scope of the villa, and at least expanded a circle.

But what surprised Chen Dong the most was the depth.

The advanced underground fortress has opened up the second floor!

In this way, rooms, warehouses, and other functions are enriched.

Ding!

[Dear survivors, the advanced underground fortress has been upgraded! 】

Before Chen Dong went downstairs to check the structure of the second floor, he suddenly froze.

He actually felt the breeze in the underground fortress? !

Turning his head to look, the tips of his hair swayed slightly.

it is true!

He really felt the wind in the underground bunker!

Is this the ecological cycle system brought by the advanced underground fortress? !

This question is beyond the outline!

It cannot be explained by previous science at all.

However, Chen Dong wasn't bothered.

After all, the things that impacted his worldview were not bad.

Walking to the second floor of the underground fortress, Chen Dong saw a pool.

There is wind, water, and photosynthesis for growing plants.

In the high-level underground fortress, the most basic circular ecosystem has indeed been formed.

Chen Dong left contentedly and walked back to the villa.

Coincidentally, Xie Anqi and Tian Xiaoyu had already prepared dinner, and told him to wash their hands and eat quickly.

The three of them worked in the woods all morning, and they returned to the villa area in the afternoon.

After finishing the upgrade of the high-level underground fortress, the sky has gradually darkened.

Tian Xiaoyu brought a plate of meat to Fat Tiger who was sitting cross-legged on the ground.

Thanks to Chen Dong's wealth.

Otherwise, I really can't afford to support a fat tiger.

Can only throw out self-sufficiency.

However, Fat Tiger's own predation ability is not weak.

If one day he couldn't get rid of the pot, and Fat Tiger went out to hunt, he might be able to support Chen Dong and the three of them in turn.

At the dinner table, Xie Anqi and Tian Xiaoyu didn't know what riddles they were playing, and didn't speak much, but they kept moving and making eye contact.

Xie Anqi touched Tian Xiaoyu's arm a few times, which made Tian Xiaoyu blush.

After eating, the three of them chatted for a while, and then went back to their rooms.

I've been busy all day today, and I'm quite tired.

At night in the doomsday world, there are less crowds of people in the old world, and less noise and traffic in the night market.

At first, Chen Dong was not used to lying in bed early.

But after getting used to it, he had to say something.