"Waiting for you to return to the tree house, I have something to give you something here, so that you don't have to walk to mining every time." However, Xu Xin didn't want to inquire about how she discovered the nitrate mine.

Bottle mutant agents and a mutant beast contract can make her efficiency higher.

"Ah? Do you? Give me? Wow, you are so good!" Li Wenxi's voice was very surprised. This is the biggest trouble at present. I did not expect Xu Xin to solve her.

"Fortunately, I will explain to you again when I give you something, oh yes, do you have a mutant beast meat?" Xu Xin asked.

"There are a lot of green meat. I have never dared to eat a problem with problems. Do you want it? I can give it to you." It seems that Xu Xin helped her solve the problem of mobility.

The reason is to give the meat to Xu Xin.

"You keep it yourself. Long -term consumption of this meat can improve your physique, and it is very delicious."

"Have you eaten? Introduction seems to be just a kind of meat that can be edible, is there such an effect!"

"Well, after eating, there is a feeling of strengthening strength, although it is weak."

"Oh, I know, do you want to use nitrogen to save mutated beast meat? Now everyone has just come out of the dungeon. Just there is a lot of beast meat in their hands, and they have no ability to save. We can just search for a wave of waves!

"Li Wenxi was eager to try," I'm almost here, I will give you a nitrogen when I go back! "

After hanging up the call, Xu Xin took a mutant beast contract and went to the downstairs to synthesize the stage to make a bottle of mutant medicine. He intends to give these two to Li Wenxi in exchange for her nitrogen.

With their current strength, you can forcibly pour a mutant agent under a wild boar or bison. After the mutation, you can use the mutant beast contract to contract it.

The mutant beast contract is not a special mount contract, so it will definitely not be like Xu Xin riding a silver king. Even if it is fast, it will not be thrown down as Taishan, but ordinary ride can still be done.

And even if you do n’t ride, it is very suitable to hang a few backpacks for pulling goods. This method is very suitable for Li Wenxi. Otherwise, she has to travel long distances every time.

The cost is so high, Xu Xin was a little embarrassed to ask her to ask her for her.

With the nitrogen that can refrigerate, Xu Xin intends to make several large refrigerators to store some mutant beast meat as a reserve.

As Li Wenxi said, he can go directly to the platform to buy some mutant beast meat. After all, there are more than 1,800 people returning from the dungeon. Now the mutant meat on the market is really a lot, and the price is still very low.

Because everyone feels that these meats can't be eaten within three days.

Soon, Li Wenxi called Xu Xin.

After connecting the video, Li Wenxi on the video of the video seemed a little excited: "What are you going to give me? The nitrate in my hand is ready."

Xu Xin sent the attributes of the mutant pharmaceutical and mutant beast contract to Li Wenxi.

"This ... you can create a mutant beast!" Li Wenxi was shocked, especially when she saw the mutant beast contract, and immediately understood Xu Xin's thoughts.

Change the beast and contract it? "

"That's right." Xu Xin nodded, "It is best to choose a beef or a pig that can bear weight and help you the greatest."

"Well ... if you have to choose one, it's still a bull. It's too strange to ride a pig!" Li Wenxi imagined that he was riding a pig, and immediately shook his head, as if he wanted to throw the picture in his mind.

Xu Xin informed her precautions for contracts and pharmaceuticals.

"Understand, let's trade!" Li Wenxi initiated the transaction directly to Xu Xin.

[In the direction, you initiate a transaction, the mutation of the beast contract (green)*1, the mutant pharmaceutical (blue)*1 in exchange for the nitrogen (blue)*2]

Blue -grade nitrogen ?!

Li Wenxi on the screen was open, and her hand was holding a crystal -shaped nitrate block to play: "I identified it as soon as I came back. Among so many nitrogen, there were four blue -grade nitrate, which was divided into two of you.

Block, the introduction seems to say that the blue -grade nitrogen has a stronger function than the green level. "

Xu Xin immediately clicked and agreed. The two slap -sized blue -grade nitrate appeared in his hands.

[Nitrogen (blue): High -grade nitrogen, which is dissolved in water, will absorb huge amounts of calories, and the effect is super strong! You can make blue explosives in one piece.]

Xu Xin saw the explosives in the introduction, so that his heart was leaking. He could really make explosives, but unfortunately, he did not have the production method of explosives.

However, the previous sentence that absorbed the "huge amount" heat caused him to accelerate his heartbeat. Could it be that the cooling effect is extremely strong?

"Have you tried it, the function of the blue -grade nitrogen?"

"Well, just throw a piece in the basin, I freezes instantly, and the surrounding temperature has dropped several degrees directly!" Li Wenxi said, "I still feel a bit cold now." I still feel a little cold.

"

So strong!

You know, normally normally wants to make ice, not only the consumption is very large, it is basically close to one to one, and the time to make ice is not fast. It takes half an hour to freeze.

Just frozen, and the temperature surrounded by the surroundings decreased!

Gifted

"Okay, I can't wait to sign the mutant beast contract. I must complete it before tomorrow's event. I go out first.

"Okay, by the way, the iced directly made of nitrogen cannot be eaten. Do n’t use the pot of ice to make a smoothie. If you want to eat it across the bucket to make ice."

"I still know this, okay, I'm not so stupid!"

Hanging the video, Xu Xin couldn't wait to try it. He filled a pot of water and put the blue -grade nitrate in his hand in the water. Suddenly, the pot of water was quickly frozen at the naked eye. At the same time, one, a one

The coldness of the stocks came out, and the temperature surrounding the temperature dropped instantly, letting Xu Xin shive.

And that piece of nitrate is frozen in the ice, there is no change in shape.

"This ... this is too strong!" Xu Xin was a little shocked.

He suddenly changed the idea of ​​making a refrigerator before.

What refrigerator do you do? He can use these two nitrates as an ice cellar! With the ice cellar, he can store a lot of mutant beast meat and other food, which is equivalent to a small granary!

He quickly started planning the ice cellar in his mind.

To build an ice cellar, you need to let the temperature in the ice cellar be reduced first, and then put the ice cubes in it.

The ancient people’s ice cellar is actually relatively simple. In winter, the large pieces of ice are cut off and put them into the cellar. Because the cellar is underground, the ability to maintain temperature is very strong, so in the summer, it can basically fail the ice and keep it in the cellar.

At low temperature, this is the ice cellar.

And now it is a large summer, but there is no natural ice for him to use, so you need to cool down and make ice. This is difficult to do.

The amount that needs to be consumed is too huge. But his two blue -level nitrate can fully meet the needs.

What he has to consider now is to get an ice cellar. Generally speaking, the ice cellar is set on the ground. There is no ventilation underground, no light, and rarely transmitted in calories, so that the ice cubes can be stored for a long time.

But if you set it underground, every time he goes to the ice cellar to get things, he must go down from the tree house. In case there is something that cannot be out of the tree house, or flooding the cellar like floods, it will be uncomfortable.

So Xu Xin intends to build the ice cellar on the first floor of the tree house.

Not only because it is convenient, but he actually discovered very early that the floor of the tree house has the capacity of insulation.

His furnace is placed in the corner of the second floor of the tree house. Every time he uses a melting furnace, the high temperature flame in the furnace will emit strong calories. You know, the flames of the melting iron block are above 1,500 Baidu or more.

Whenever the furnace runs, unless he is going to get the material, he will try to stay away from the furnace.

When he used the melting furnace for a long time on the second floor, the temperature near the furnace was highly outrageous. Especially now, the environmental temperature itself is not low, making the entire second floor look like a high -temperature sauna room.

According to common sense, the third floor should be like a steamer. But there is no. The floor of the third floor is even cold. Only the place near the staircase entrance will be slightly affected.

Therefore, in the case of the heat insulation capacity of the tree house floor and wall, the first floor of the tree house is completely feasible as an ice cellar.

Xu Xin immediately started the transformation of the first floor of the tree house.

The ice cellar does not need to be so big in the whole layer. It is not necessary. Xu Xin divided the first layer into two parts. Half of him was separated by him, and it was used as an ice cellar.

He covered the window with a wooden window so that the sun was unable to illuminate, and the entire room became a dark closed and insulation environment.

Xu Xin filled a huge wooden barrel with water, placed in the room that was about to become an ice cellar, and threw a piece of nitrate (blue) directly inside.

At the moment when the nitrogen did not enter the water surface, the sound of the water surface made a click, frozen directly, and the nitrated gratitude was frozen in the position near the water. At the same time, the water in the barrel was gradually frozen, and a thorough coldness came from the wooden barrel from the wooden barrel.

Explore out.

"Kak!" The iced ice that expanded after the wooden barrel was frozen, and the wood chips broke down. At the same time, Xu Xin felt the sharp decline in the temperature in the entire room within half a minute, and fell directly from 30 degrees to directly to the thirty degree to fall directly to

After a few degrees, the temperature of the refrigerator refrigerator has been reached.

"This blue -grade nitrogen has a strong ability to absorb heat, and it has not been consumed!" Xu Xin watched the nitrogen that was ice on the ice, and took out the pick to cut it out.

The nitrogen also maintained its original appearance, I am afraid that it was just dissolved with a layer of skin that could not be seen by the naked eye.

But even if it is dissolved, it is okay, it can be used for repeated use. This blue -grade nitrate is really convenient!

Continue to repeat this action. After the third bucket of water is frozen, the temperature in the entire ice cellar is already very cold, at least below minus ten degrees, and then with the three lower temperatures made of nitrogen (blue).

To maintain temperature, the entire ice cellar has basically been completed.

Xu Xin was frozen a bit, and quickly walked out of the inside. As soon as the door opened, it was a hot spread. The contrast of dozens of degrees made him extremely sour.

I have to have a minor illness.

He quickly closed the door so that he did not let the air conditioner come out again.
Chapter completed!