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The most important thing is to get a few jù after opening and tempering again and again.

Hao Fenglou asked the blacksmiths to develop a habit of recording after practicing a furnace of iron. This time, the approximate heat of the fire, the strength of the wind, the time of smelting, the color of the molten iron, and the amount of coke added, all need to be recorded by experienced veterans, and then according to the quality of the steel, continue to correct, so as to improve.

In fact, as far as innovation is concerned, the Celestial Empire at this time is definitely a dust, whether it is the four major inventions, just steelmaking, there has already been a steel-filling method and coke steel-making method, and these methods did not appear in the West until after the Industrial Revolution, even if the Japanese people are proud of the Japanese knife, it is also born from the Tang knife, but although it is an innovation, it has not been carried forward, but it has not moved forward. The most important reason for this, Hao Fenglou summed up, in fact, to put it bluntly, is that there is no scientific method, how to use new technology to make good steel, need to continue to ponder, constantly correct, how much coke, how much furnace heat is appropriate, a little deviation, the result may be different.

At this time, a book has been densely recorded countless information, Hao Fenglou encourages everyone to discuss, teach each other experience, naturally, in fact, there are also people who want to hide secrets, but Hao Fenglou directly divided the blacksmiths into two groups, suing them, between the two groups, every month according to the quality of the steel is compared, which group is good, the future salary will be doubled, no mother-in-law will find a way to find your mother-in-law, there is a mother-in-law will bring your mother-in-law early.

So everyone didn't dare to hide their secrets, and after the daily furnace tempering, they got together to analyze and discuss according to various numbers, and the steel that came out was obviously much better than before.

Besides. Hao Fenglou also encouraged them to add other minerals to make the iron real. Some minerals can increase the hardness of iron, but Hao Fenglou doesn't have much knowledge of chemistry, so he can only rely on these people to find out on their own.

Many people think that when they travel back, the protagonist always does it himself, as if he has mastered physics and chemistry, and he can be invincible. But Hao Fenglou is not like this, because he is a half-water, and the only thing he can do is to cultivate the true and scientific spirit of craftsmen after appropriate improvements. Only by finding a way can we continue to improve, just like the researchers of later generations, they may not have innovated something in a flash of inspiration, but used various materials to compare and realize, just like Edison invented the light bulb, in fact, it is not his ultimate cleverness, but his perseverance. In order to prolong the life of the bulb, he used iron wire, steel wire, silver wire, and gold wire to repeat the real thing, record the number of jù, and finally found the tungsten wire, completing a world-class feat.

The lesson to be drawn from this is to invent and create zào. It's not that the apple hits the head, to put it bluntly, it's actually this kind of scientific literacy, with the spirit of constantly trying, of course. What's more important is that you have to have silver, and you have silver. You can feed a pot of iron ore and coke into the furnace, and the result is a furnace of scrap iron and steel.

Hao Fenglou found that he was actually very poor in money, this is indeed a bottomless pit, if it weren't for the support of Donghua Gate, most of them would really plan to live in the thatched hut here for the rest of their lives.

It was only after half a month of continuous experimentation that the craftsmen gradually mastered the rules, and the steel smelted not only greatly reduced the cost and greatly increased the output by using the coke ironmaking method, but also made leaps and bounds in the quality of the steel.

After completing this step, every progress in the future, every change in strength and toughness will be extremely difficult, but Hao Fenglou still encourages the craftsmen to continue to ponder.

At this time, Zheng He came.

"Senior brother."

This senior brother shouted very warmly, which made people feel embarrassed.

Hao Fenglou's current image is not very decent, it is a little darker, and his clothes are a little dirty, Zheng He just smiled bitterly when he saw him.

Hao Fenglou led him to his residence, invited him to tea, and said, "It's a bit hard here, I don't know if the junior brother is coming, but there is a message from His Majesty?" ”

Zheng He said: "Your Majesty asked me to come and see Senior Brother, I want to ask about the progress here." ”

"It's not bad, you go back and tell your majesty, please be relieved."

Zheng He hesitated for a moment and said, "There is one thing, I want to talk to my senior brother." After that, I first took out some news in the Beijing division and said, and finally said: "In another half a month, it is the time to test the sword, many people are gearing up, this matter is a competition between the senior brother and the Japanese people, who knows that now it has become a dispute between the prince and the king of Han, it is said that the prince and the king of Han are now secretly full of energy, and His Majesty has also been paying attention, and it seems to be displeased." ”

The sons did not hesitate to beat their heads and bleed at any opportunity, and they were not happy to be surprised by Hao Fenglou, although there is nothing wrong with the emperor's mental technique, and it is also an innovative mechanism to make a balanced policy, but although Zhu Di is the son of heaven, he is also a father.

Hao Fenglou sighed and said: "King Han, this guy is really good, the scar forgets the pain, what is there to fight with the prince about this kind of thing." ”

Zheng Heguan'er: "When I went to see the master, the master said, if it goes on like this, something may happen, and asked me to remind you that the king of Han has always been conceited, and when the time comes, there is no need for the senior brother to get involved, and some things should be natural." ”

Hao Fenglou said: "I know." ”

After talking to Zheng He, Zheng He talked about some secrets in the palace recently, and said in a low voice: "Recently, the queen mother's body has been a little unwell, so Your Majesty Xià is not in a good mood. There is also Zhang Guiren, do you know that Zhang Guiren is a person who can be guarded against, she goes to the queen's mother every day to ask for warmth, but she is afraid that she has a lot of thoughts. ”

When it comes to things in the palace, Zheng He is like a few treasures, Hao Fenglou also listened attentively, said almost, Zheng He glanced at Hao Fenglou, and said: "Your Majesty is very important to the senior brother, I am also honored to be a junior brother, I have no relatives in this world, the senior brother and the master are my dearest, if there is any movement in the harem, I will pass on the news to you, I have a trustworthy person, called Wang An, if he comes to look for you, there must be an urgent matter, you must care." ”

How do you say this, Hao Fenglou was actually a little moved, his relatives have all exported, what else can Hao Fenglou say, there is no way, pay for it, Hao Fenglou immediately pulled out a pile of treasure money from his sleeve, although the treasure money depreciates quickly, it is better than convenience, Hao Fenglou will carry some at any time, and stuff it directly into Zheng He's hand, and said: "Senior brother, the family doesn't talk to the two families, this bit of silver is taken to tea, we are close relatives......"

Zheng He's face turned red, and he hurriedly waved his hand and didn't accept it, Hao Fenglou said sincerely: "Dear relatives, how can I teach you to endure hardships?" Senior brother has nothing else, just a lot of money, this is not a bribe for you, it is to prevent you from suffering in the palace, and you are worried about it. ”

Hao Fenglou's heart is dripping blood, talking about feelings is the most annoying, when it comes to feelings, you have to pay money, and this day can't be passed.

In the end, Zheng He still accepted it, only half of it, and then returned to the palace to deliver the mission.

Hao Fenglou pondered for a while, but he could feel Zhu Di's impatience for ironmaking, it seems that His Majesty is in a hurry, and he is really eager to take advantage of the national prestige, it seems that these Japanese people really provoked Zhu Di.

If you don't say anything, continue to make iron.

………………………………………………………………………………………………………………………………………………………………

In the blink of an eye, in April, in early summer, the weather is gradually getting hotter, the city of Nanjing has been calm recently, and there is nothing major, but in summer, the flood situation is tense, and the water level of the riverbed has risen in various places.

This kind of thing is almost a necessary lesson for the imperial court, and it is talked about every year, but the current water situation depends on the sky, once it rains heavily in a certain place, any holy decree and palace report are false, and when the flood rushes, there are thousands of houses and hundreds of casualties.

Naturally, there is no need to worry about the old and difficult questions, but today is the day when the envoys of various countries, vassal kings, and nobles enter the palace to meet them.

Early in the morning, many clans wearing python clothes have been waiting outside the noon gate, and as soon as the palace gate opens, everyone rushes in, hundreds of people, and set off towards the Fengtian Palace.

Zhu Di also got up early in the morning, his spirit was not bad, although he was faintly worried in his heart, but the expectation was higher.

According to the rules, this sword test was after the court meeting, he arrived early, sat high on the royal chair, and the vassal king, envoys, and nobles saluted one after another, shouting long live.

Zhu Di stroked the case, showed a smile and said: "You don't have to be polite, I invite you to come today, it is nothing more than a lively and lively scene, many people entered Beijing a few years ago, I have never been able to find time to summon me, there is a saying What is it called, yes, there are many slack, and I hope everyone Haihan." ”

Everyone laughed together, of course, this laugh is just a taste, it is nothing more than a laugh, the joke of the emperor Lao Tzu, you can't help but show a smile, but you can't laugh too much.

Of course, there are also people who have been tightening their faces, such as the envoy Ashikaga Yoshi, who pulled his face from beginning to end, as if others owed him money, and he didn't know what to think about at this time.

However, the crown prince Zhu Gaochi, his eyes skimmed towards Ashikaga Yoshishi from time to time, and the corners of his mouth smiled, as if he was expecting something.

Zhu Di shook his spirits, and said: "There are meritorious deeds, clansmen, and envoys who come today, everyone comes to congratulate together, what is this, this is loyalty, I am very happy, since I came, I simply accompany everyone to have fun, this is called solo happiness is not as good as crowd happiness." (To be continued)