The sun poked its head out from the east, reflecting half of the sky red. The dew wet Du Zhongxiao's hair, and even his face was wet.

Opening his eyes, looking at the furnace that was still red not far away, and there was no one around. Du Zhongxiao asked Chai Xin standing next to him: "Have all the steel needed there been made? If it is made, the craftsman will come."

Chai Xin bowed and said, "It's already practiced. When it's dawn, a blacksmith will come to build a steel knife. If the officials are tired, go back and rest first."

Du Zhongxiao stood up, rubbed his eyes, and was stunned for a while before saying, "No, you go and serve a bowl of porridge, I'll eat it."

Chai Zuoyingnuo turned around and left. Du Zhongxiao stretched to see the steel that was refined.

It was the second half of the night last night, and Du Zhongxiao couldn't stand it and fell asleep on the side. I don't know when these people will be trained.

When I arrived next to the stove, I saw Tao Shiqi lying on the ground, sleeping soundly under the warmth of the fire. Not far from him, I slipped away the steel strips of the made. The melted steel poured out of the crucible, which could be cast directly. In order to facilitate subsequent construction, Du Zhongxiao asked them to leave a spare and pour it into steel strips. Now most of the steel strips are no longer red, but the residual heat is still hot.

After checking the shape of the steel bar, Du Zhongxiao nodded and was satisfied. The steel still needs to be forged, and it cannot be directly ground and opened. This is impossible. The advantage is that you should not practice ten times and hundreds of times, just forge the required shape head.

Chai Xin brought a large bowl of millet porridge, and Du Zhongxiao drank it beside him, waiting for the sun to rise. This time he prepared more than 30 steel knives, hoping to get the payment for the goods needed. In the future, you must have sufficient capital and never do such things again. When doing business in the yamen, the goods will arrive, and it is embarrassing to say that you can't pay for money.

Tao Shiqi was the first to wake up and ran to Du Zhongxiao to salute: "Official, we made all the steel we needed last night and were all there! If we didn't need to practice hundreds of times, it would be easy to build."

Du Zhongxiao said: "It is of course easier than hundreds of refining, but after all, it takes some effort."

As the sun was rising, Wang Aishi brought five blacksmiths over, saying that these few were the best craftsmanship in the county, and introduced them one by one.

Du Zhongxiao led a few craftsmen to the place where the steel bars were placed and said to them: "There are all good steel here, and it doesn't need to be tempered. Just make a steel knife according to the style over there. You can make it into shape first, don't quench it, wait until I see it."

Several craftsmen agreed together.

After giving the order, Du Zhongxiao asked Tao Shiqi to watch here and left the construction site. The remaining forging was a laborious work, and these craftsmen were all familiar with Du Zhongxiao's guidance. Only in the final quenching, Du Zhongxiao still remembered the order of high-carbon steel heat treatment and came to guide. After all, in this era, blacksmith heat treatment was entirely based on experience, which was not as good as Du Zhongxiao's theory learned in his previous life.

After returning to the Houya, Du Zhongxiao only arrived at the front yamen at noon.

When the Chairman Dong heard that Du Zhongxiao had arrived at the official hall, he hurried over. Xu Li sat down and bowed and said, "Minister, the magistrate, the official discussed with the two guests. You can wait a few days to pay for the goods. The iron dealer is nothing, but the cattle dealer is a little unwilling. He sells living things, and the cow becomes sick on the day he waits, so he sells less money in vain."

Du Zhongxiao said: "There is no way. Now the yamen has no money, so I have to let them wait for a while."

Chairman Dong said again: "The iron seller is very easy to talk to. I discussed selling knives with him. He promised to buy them at a high price if it is a good knives. This customer sells knives and wealthy families, as long as the knives are good, they are not stingy with money. But I don't know how the knives are built in the magistrate?"

"It takes several days to wait for dozens of knives to make the guests wait."

After seeing off Chairman Dong, Du Zhongxiao processed some official documents and felt exhausted physically and mentally. At first, he only felt that he could pay back the money like this, but he didn't expect that the time was too tight. After staying overnight, his body couldn't stand it. The development has been too fast recently, and he couldn't stand it, let alone others? The most important thing is that until now, there is no big investment and he has been spending money.

After standing up and walking for a while, Du Zhongxiao finally woke up. In the next few months, he would have to wait. At least he had to wait until the farming business started to produce harvests and the business began to make money, so that he could have the energy to develop the next step. In this way, the days of eating food in the sky will not be available again.

In the afternoon, Du Zhongxiao arrived at the construction site and instructed the craftsmen to quench the well-made knife. The forged tool steel must be annealed first, and then quenched after the final treatment, and then tempered at low temperature. Generally, Du Zhongxiao remembered that the specific temperature must be forgotten, so he could only try the craftsmen several times according to the vague memory and choose a better craftsman. Du Zhongxiao has not made a thermometer yet, so where can he measure the temperature? However, skilled craftsmen can roughly estimate the temperature based on the color of the steel being burned red and some other small characteristics. Several craftsmen are veterans. After listening to Du Zhongxiao's description of the process, they also found that they were almost inseparable.

Ask the knife sharpener to open the blade of the knife and hold it in his hand, the cold light shines.

Du Zhongxiao tried it and handed it to Chai Xin who was eager to try it, saying, "Didn't you always think that cutting steel money is very powerful? This knife is good. You can cut off a few copper coins by trying it. Let's start with three, depending on the strength of your knife."

Chai Xin Ying Yinuo took the steel knife in his hand, danced a knife flower, took the knife and looked at it again and again. He took out three copper coins from his arms, placed it on the wooden stake on one side, turned to Du Zhongxiao and said, "Official, I can kill you!"

Du Zhongxiao nodded: "Even if you cut it down, remember to use the knife quickly and steadily, and the strength should not be used to old age."

Chai Xin bowed his hands and held his knife in his hand. He looked at the three copper coins stacked on the wooden stake, calming his mind, and suddenly shouted loudly: "其!" He said this very quickly, and then he cut the three copper coins with one knife.

When my brother saw a flash of cold light, the steel knife cut off three copper coins and cut them on the wooden stake, making a buzzing sound.

Chai Xin looked at it blankly for a while, suddenly came to his senses, clapped his hands and shouted: "Ah, it's indeed a treasure knife, it's really enough to cut off the copper coins!"

Du Zhongxiao shook his head and went up with the craftsman to look at the knife on the wooden stake. He pulled it out of the wood, and the steel knife was intact. Du Zhongxiao let out a breath. After quenching, the hardness of high-carbon steel is too high, and he is most afraid of the blade collapse, so he has to undergo a low-temperature tempering to slightly reduce the hardness. If the crack is cut on the copper coins, it is not that the hardness is not enough, but the hardness of the tool steel after quenching has reached the level of cutting iron like mud. The reason for the crack is that it can be made into a tool for machine tools to process steel. The reason for the crack is that the material is uneven and the blade shape is problematic.

He looked at it with a knife, wiped it as bright as a mirror, and inserted it into the scabbard. Du Zhongxiao handed it to Dong Zhubo: "Take it to the iron seller to see how much one can cost. You can make twenty or thirty good knives here, so you don't have to sell them all, as long as you can get the required payment."

Chairman Dong didn't expect that he would really make such a good knife and was overjoyed. He took the knife and carefully picked it up, so he left hurriedly.

The sun in the west gradually sets down the mountain, and lights are lit on the boats of the Bian River, and it is the most lively time of the day.
Chapter completed!