Ding Chen, who turned into the alley, did not go to the hotel first, because he found a new world hidden in the deep alley. Pen % fun % Pavilion www.biquge.info

It is clear that this is not part of the ruins of the former city, as there are no high-rise buildings here. Again, there are no identical buildings like the ruins of the old city. The buildings in the alleys are disorganized, and the streets are filled with sewage. Although it is clear that a lot of reinforced concrete is used, it still looks dilapidated and is dominated by bungalows, and the two-story building is already considered a high-rise building.

Ding Chen found a blacksmith shop in this dilapidated dwelling.

The door of the blacksmith shop was open, and the yard was filled with all sorts of iron, and in front of the door sat a dark-skinned boy, shirtless, with only a knee-long black gown around his neck, which looked like it was made of leather.

The boy looked up at them, jumped up in surprise, turned and ran into the house, and soon someone came out of it.

It was a middle-aged man, bald and without a hat, and his dark face was covered with sweat. Ding Chen really couldn't tell his actual age from the wrinkles on his face.

When he saw Ding Chen's three people, his face also showed surprise, and he rubbed his hands and said, "What's the matter with everyone?" ”

Ding Chen looked around and asked, "Can you fight a knife?" ”

The man was stunned for a moment, obviously not expecting that it was business that came to the door. He cautiously asked, "What kind of knife?" ”

Ding Chen squatted down and drew roughly on the ground, "I want good material." ”

The man hesitated, shook his head and said, "I haven't hit this kind of knife." ”

"I did." Ding Chen said: "You can help me." He reached out and pulled the money bag out of his pocket and asked, "Do you accept banknotes?" ”

There was a hint of anger in the man's eyes, but he was quickly attracted by the banknotes that Ding Chen took out, and he said in surprise: "This is the legal tender of the capital area?" ”

"yes." Ding Chen was very satisfied, "Do you know fiat currency?" ”

"I often go to other regions to feed." The man took his eyes off the paper roll in Ding Chen's hand, looked at Ding Chen and said, "I heard the sound of coins, you don't still have a Coke bottle cap, right?" ”

Ding Chen was a little surprised and asked, "Do you want a Coke bottle cap?" He pulled a few coins out of his pocket, spread them out in his hand, and said, "Is this it?" ”

The man carefully craned his neck to look at it, pointed to the two coins and said, "That's it, don't have a bottle cap in the eleventh district." He said, "If you have thirty Coke caps, I'll find you a good piece of food." ”

"You're kidding." Ding Chen shook his head and said, "Who will carry thirty Coke bottle caps on their bodies?" ”

He had long discovered that although the volume of the Coke bottle cap issued in the capital area was similar to that of the bottle cap in District 11, the weight was much lighter, which was also the reason why even if the coins in other regions were minted exactly the same as the Coke bottle cap, there was no way to pass it off.

Obviously, the man knows fiat currency, and it seems that he often goes to other regions, for him, it is not difficult to circulate fiat currency, so he doesn't want the fiat currency in Ding Chen's hand, but the idea of playing coins that are inconvenient to carry is obviously very unreasonable. Considering that he is a blacksmith, the answer is almost out of nowhere.

Ding Chen shook the iron bag, making the coins inside make a crashing sound, and then said, "You tell me what's in the cap of the Coke bottle, and I'll give you all of this." ”

He looked at the blacksmith with a hesitant look on his face, and said, "I can make my own sword, but I don't have to ask you. ”

The blacksmith stared at him for a moment, then nodded and said, "If you don't have thirty, you'll have to pay." ”

"It's definitely not enough." Ding Chen said: "Don't be too greedy. ”

The blacksmith nodded and told Ding Chen that there was a very rare metal in the cap of this Coke bottle, and after being refined, it had many uses. Not only is it hard and corrosion-resistant, but it can also be used to refine steel.

Leng Yue and Ning Frost were confused when they heard this, thinking that this blacksmith must be talking nonsense through hearsay. Ding Chen heard a hint of clues, he took out a Coke bottle cap from his money bag, threw it in his hand, and said, "The metal you are talking about is titanium?" ”

"I don't know." The blacksmith said, "Everybody calls it Twenty-Two Metal." ”

Ding Chen nodded. Titanium is not rare, but the ore content is very low, and it is very difficult to refine, but I did not expect that the capital area would actually use this metal to mint coins.

He said to the blacksmith, "Show me the knives you are going to sell me." ”

To Ding Chen's surprise, in the blacksmith shop that looked like a handicraft workshop, all kinds of processing tools were actually complete, and Ding Chen even saw oxygen cylinders and acetylene welding machines.

Looking at the drilling machine and lathe equipped with a pedal power device, Ding Chen's heart moved, and he remembered the cave in the mountain, where a large number of processing machines were sealed, and he didn't know if it was emptied by Lao K later.

As he looked at the tools in the room, the blacksmith took out a wooden box from the back room and placed it in front of Ding Chen to open it. There was a steel plate 500 millimeters long and 200 millimeters wide.

The blacksmith pointed to the letter sequence printed on the corner of the steel plate and said to Ding Chen: "This is what I brought back from the capital area, and I have never found a suitable buyer. ”

Ding Chen glanced at him, stretched out his hand to hold the box, and leaned down to take a closer look at the string of letters.

The blacksmith was clearly concerned about the care of the steel, which was coated with a layer of anti-rust oil and sealed in a plastic bag. The light in the room was a little dim, and he couldn't see it clearly through the plastic bag, and Ding Chen could only distinguish the last few letters, which were CR15MOV.

To be honest, Ding Chen was a little disappointed, he thought that the blacksmith could come up with some peerless steel, but he didn't expect it to be just ordinary martensitic stainless steel, and it looked a bit of a loss to exchange titanium for stainless steel.

But if you think about it carefully, you will know that with the processing capacity of the blacksmith shop, he can't do heat treatment if he really takes out 440c, and it is not easy to have such a large piece of knife steel, at least stronger than the black knife of spring steel he used before.

After negotiating the price, Ding Chen put down his weapon and backpack and got busy with the blacksmith.

This piece of steel is already annealed, and it is relatively easy to process. Ding Chen didn't have any requirements for the shape of the knife, or the blacksmith insisted on machining a simple arc. Ding Chen seriously suspected that he just wanted to take advantage of this rare opportunity.

There is no electricity in the blacksmith shop, and the grinder has to be driven by foot pedals, which is naturally not efficient. Fortunately, the shape of this piece of material is surprisingly suitable, and there is not much room for processing. Ding Chen drove away the physically exhausted apprentices, and took turns with the blacksmith, and soon sharpened their appearance.

Then the blacksmith threw the blade into the furnace and heated it, went back to the house, found a large book with a leather cover, opened the cabinet full of reagents, and began to prepare the quenching agent with words.

It was the first time Leng Yue saw the process of metal heat treatment, and looked at Ding Chen in surprise and said, "Will he still do this?" ”

Ding Chen shrugged his shoulders, modern industry itself is a science that involves a wide range of fields, even if the level of science and technology has degraded to the level of a handicraft workshop, if you want to be an excellent blacksmith, you can't play with knowledge of metallurgy and chemical engineering.