My Doomsday Shelter Unlimited Upgrades

All kinds of materials have been consumed yesterday, and more than 20 units of wood alone were used, which was not enough for the initial stage of survival.

Finally, relying on his memory, he found a supermarket closest to the refuge, and Chen Yang was dumbfounded.

The original supermarket was built in the center of the major teaching buildings and dormitory buildings. Now that the buildings have collapsed, it is difficult to tell which one is even the dormitory buildings, let alone identify the supermarkets that are mixed in.

If you are really determined to search the supermarket, you have to cross the seven or eight meter high ruins first.

Chen Yang weighed his own strength and physical strength, and he couldn't grasp the seven or eight meter unarmed rock climbing.

That being the case, I can only go to the girls' dormitory first.

After turning east and west for only a few minutes, Chen Yang found a dormitory named Qiaomu Pavilion.

The dormitory buildings of their school are all well-known and very nice, but now they are all turned into piles of ruins, which inevitably makes Chen Yang's heart full of emotion.

"The people inside should have escaped, right?"

Chen Yang comforted himself. In fact, he also knew that even if these people escaped, most of them probably died somewhere.

According to the system, after this disaster, the global population has been reduced by 90.00%.

Of course, this does not exclude this city, or this university, and no one in any place can be alone.

Putting aside distracting thoughts, Chen Yang wants to live on no matter what, doesn't he?

Looking at the ruins in front of him, Chen Yang chose to upgrade the wooden shovel first.

"System, upgrade the wooden shovel!"

The light of the wooden shovel in his hand changed, and new attributes appeared.

[Alloy Shovel (Common)]:

The shovel is made of alloy, which is very strong.

Upgrade Direction 50: Change the mechanical structure of the shovel, slightly increase the ease of use of the shovel and reduce the physical consumption of using it. [-] survival points are required.

Upgrade direction 300: Change the material of the shovel, greatly increase the firmness and other attributes of the shovel, and require [-] survival points.

System comment: The shovel used in the alloy warhead is called the alloy shovel!

[Record]: Iron - 4, Steel - 4, Wood - 8

Chen Yang upgraded the wooden shovel two levels in one go, from wooden shovel to iron shovel, and then from iron shovel to alloy shovel. The previous flag of "unless you are rich, don't upgrade" has long been broken.

After thinking about it last night, considering the functions of the system comprehensively, it should be correct to upgrade an alloy shovel.

Alloy shovels are many grades higher in hardness and sturdiness than iron shovels and wooden shovels. They can break up the concrete in the collapsed ruins. It is so convenient to collect and open the way for exploring items in the ruins.

There are not many materials needed to upgrade from a wooden shovel to an alloy shovel. He doesn't even need survival points, but upgrading from an alloy shovel requires 300 survival points.

"What's a better shovel than an alloy shovel? A diamond shovel?"

Chen Yang couldn't figure it out. This kind of shovel was only seen in the game. He planned to upgrade it once he had saved up to 1000 survival points.

Holding an alloy shovel, Chen Yang excavated among the ruins.

Concrete can naturally be crushed and collected, but what about the steel bars in it?

Chen Yang recalled the previous chemistry class, the teacher seemed to have said that when two objects collide, who can survive without damage, the competition is the hardness.

The difference between steel and iron is the most important thing is the carbon content.

Steel has a low carbon content and is relatively hard, while iron has a high carbon content and is naturally soft.

The same is true for judging good and bad steel alloys.

Of course, the steel bars made by Huaxia are of good quality, but what he holds in his hand is an alloy shovel made by the system plug-in.

Which one is better, Chen Yang intends to find out, if he succeeds, he succeeds, but if he loses, he will lose some materials, at worst, he will use his survival points to make it again.

Taking a deep breath, Chen Yang closed his eyes. With all his strength, he slammed down on the steel bar with a shovel.

clang!

It was the sound of metal cracking.

Chen Yang slowly opened his eyes, and found that the cracked metal was not a shovel, but a steel bar!

I picked up the shovel and looked at it for a while, but there was not even a gap on the shovel.

"It's too slow!"

Chen Yang Yile, this is really a great help, no longer have to worry about the material being too large to be collected and disassembled, now just take the shovel and smash it back and forth.

Dangdang Dangdang!

[Get Concrete 1]

[Obtain steel 0.5]

[Obtain sand 0.7]

.....

In just one or two hours, Chen Yang collected nearly 20 units of steel, more than 30 units of concrete, and various other materials.

The harvest at this moment has been several times that of yesterday, and returning to the shelter will definitely upgrade a big wave!

Chen Yang suppressed his excitement, added some water, and continued digging.

According to this speed, the collapsed outer wall should be almost dug, and it will be inside the dormitory soon.

Sure enough, another shovel went down, and after the concrete was broken down, a black object came into view.

"what is this?"

Chen Yang pulled it curiously. There was a lot of dust hanging on the black object, but it still had a lot of elasticity. However, he was still afraid of breaking the object, so he first disassembled the stone pressed on it, and then took it away. out.

【Record】: Get Chanel Black Silk 1

Swish.

Chen Yang was startled, he let go of the black silk and the shovel together.

What is this kind of thing?Could it be that he dug into the closet?

Chen Yang looked around subconsciously, remembering that it was impossible for anyone to pay attention to him now, so he stabilized his mind and crotch.