When Jingwen knew that Li Ke wanted to transfer flowers and trees, and then let Jingwen help him resist the pressure, Jingwen also planned to plan for it, and then give Li Ke a period of time to develop safely. After all, if Li Ke can't develop, then how can he let him go dog-eat-dog with Li Chengqian! Therefore, Li Ke must give him time to develop, otherwise Li Chengqian will have no opponent, so Jingwen will not be able to sit on the mountain and watch the tiger fight. And when the time comes, Li Chengqian will definitely continue to find fault, so he must set up some long-term opponents for Li Chengqian. Anyway, the more these guys fight, the more reassuring Jingwen will be, because it is impossible for them to obtain the right to inherit the throne. Li Shimin will not like those princes who fight too hard, after all, didn't Li Shimin come up by seizing power?

A few days later, Li Chengqian did not show any retaliation, so Jingwen was temporarily relieved. Maybe Li Chengqian hasn't found a chance yet, but Jingwen will always be careful, so that this Li Chengqian will not have any chance to take revenge on himself.

And it didn't take long for the officials of the Ordnance Supervision to find Jingwen.

"Lord Jingwen, according to your instructions, as long as the crucible is ready, the steel is done!" Said the official of the Ordnance Superintendent.

"What? Is the crucible steelmaking done? Your grandfather's, it's been a few years, and finally got it right? Jingwen was excited.

Jing Wen was very happy in his heart, because this crucible steelmaking had been proposed by Jing Wen as early as three years ago, and then he wanted to set up a project to be studied by the people who were in charge of the ordnance supervisor. Jingwen's current firearms units actually use missiles, not that kind of artillery. The cost of missiles is much higher than that of artillery, because missiles are more difficult to make, and they may not be more powerful than artillery. The reason why Jingwen uses missiles instead of cannons is actually helpless. Although the cost of missiles is high, he does not need much steel. Missiles only need to be made from waste paper, just like the cupola of later generations. But the cannon is different, the cannon has a high chamber pressure. It will make ordinary steel unbearable.

At first, Jingwen also wanted to use steel to make cannons, but later found that the quality of steel in the Tang Dynasty was simply unflattering. The cost of steel in the Tang Dynasty was very high, and many of the like were forged by blacksmiths with a hammer. The cost of steel is very high, and ordinary people cannot afford to use it. If this kind of steel is used to make zuò cannons, I am afraid that the cost will be higher than that of missiles. In the Tang Dynasty, only generals could use weapons made of steel, and ordinary soldiers only used pig iron. A cannon costs at least hundreds of catties, where is there so much steel to make a cannon!

But. Jingwen did not give up, and Jingwen also proposed a crucible steelmaking method. Jingwen proposed that the blacksmith of the armory supervisor should study the crucible, which was later developed by Westerners in the eighteenth century. Now Jingwen can probably come over and use it. And the crucible can refine a large amount of relatively low-cost steel, so that Jingwen's cannon can be realized.

"This is the cauldron?" Jingwen asked.

"Yes, it took us a long time to get this crucible. This crucible is made from a mixture of graphite and clay, and we went a little astray when we started. What you're talking about is using graphite to make zuò, and then using coal to make steel. Later, we searched everywhere for coal, but we didn't find any such thing. As for graphite, it is impossible to find it. Said the official of the Ordnance Supervisor.

"Why didn't you find it? These two things shouldn't be hard to find! Jingwen asked.

And the officers of the Ordnance Prison spread their hands together. said: "The graphite that we people think of is actually the coal that Lord Jingwen said. At first, we thought that the coal that Lord Jingwen said was graphite, because we all called the coal that Lord Jingwen said was graphite. Because Lord Jingwen, the coal you are talking about was in the Wei, Jin, Southern and Northern Dynasties. are all used as ink, so we all call it graphite. Later, we used this coal as the graphite you mentioned to make the crucible, but it turned out to be quite a problem. ”

Later, we asked Jingwen again. Lord Jingwen, you finally said the difference between graphite and coal. Only then did we realize that we were actually mistaken, graphite is actually coal. As for the graphite you mentioned, Lord Jingwen. It took us more than a year to find out. According to Master Jingwen, graphite is relatively soft, so we also found it. ”

Jingwen was a little ashamed that he hadn't figured out the ancient problem. In ancient times, coal was actually called graphite, so this caused a very strict misunderstanding and delayed a lot of time. As for graphite in ancient Jingwen, I don't know what it was called, but it was precisely because of these two mistakes that the officials of the ordnance supervision were mistaken. Mistaking coal for graphite is a misguided mistake. Therefore, it took a year for no reason to have no effect. But fortunately, Jingwen's chemical knowledge was not returned to the teacher, and he still knew that graphite was soft, so those officers of the ordnance supervisor quickly found graphite, so he didn't miss a big deal.

However, it's not too late to get it now. After three years of preparation, this crucible can finally be made, and the next step is to make steel. Jingwen looked at this crucible, which was not bad, that is, he knew that he could now enter an era of "great steelmaking". In the future, the cost of steel may be greatly reduced, and then steel can continue to be used to make all kinds of things.

"Alright, you can demonstrate this crucible steelmaking, and then I'm going to see how this steelmaking works. It took so long for everyone to finally get this steel, and of course I have to care. If we can get this steel, then I'm afraid our Datang's military strength will also improve a lot. Whether it's a weapon like a sword, or being able to make a cannon in the future, these are all very important. In the future, maybe not a single soldier will be able to wear iron armor, and maybe not a single soldier will be able to use a sword made of stainless steel! Jingwen said.

Soon, the blacksmiths of the Armory Supervisor began to operate, and the crucible began to light a fire in preparation for steelmaking. And Jingwen also watched this scene, and then watched the steelmaking situation at any time, because he knew that this might be a huge invention, an invention that could affect human history! (To be continued......)