The crown prince decreed that the inner palace of the imperial city, including the Fengtian Hall of the front hall, was under martial law, and no one was allowed to enter or leave.

As soon as the news came out, Gyeonggi was in an uproar.

Zhu Jianji had already expected the reaction of the government and the opposition, and estimated that the Son of Heaven was about to die and the crown prince was preparing to ascend the throne, so martial law in the imperial city prevented Yu Qian from usurping the country.

Or maybe the Empress Dowager Sun is operating something.

But no.

It's just that he wants the golden knife to leave the palace a day later to buy time.

took Dai Yi and went straight to the ordnance prison.

In the corner of the outer city of the imperial city, adjacent to the Ministry of Industry, the Ministry of Industry was under the jurisdiction of the Ministry of Industry in the Song Dynasty, and the main affairs such as the manufacture of weapons were in charge of the Ministry of Industry, and the Ordnance Supervision gradually became a place for talent reserves.

To put it mildly, it is the Qingshui Yamen.

The same was true of the Ming Dynasty.

Ordnance Superintendent is Shi Xin, has passed the age of not confused, was originally the Ministry of Industry to study, improve the artillery department director, is a craftsman, a little dull, in the early years offended the boss, was transferred to the Ordnance Superintendent, Shi Xin has no desire to seek in the Ordnance Superintendent on the contrary, away from the officialdom after the tilt, relying on rich experience and superb firearms level, become the expected Ordnance Superintendent.

A blessing in disguise.

After all, the ordnance supervision is on the fourth grade, and it is difficult to climb to the sky if you want to mix it with the fourth grade in the Ministry of Industry.

However, in recent years, the ordnance superintendent, which no one pays much attention to, has been a little busy.

Because there is a task from His Royal Highness the Crown Prince!

Walking into the ordnance prison yamen, there were few people, and when they saw His Royal Highness the prince coming down, they hurriedly knelt down and saluted.

Zhu saw that Ji was exempt and asked, "What about Shi Xin." ”

A warden hurriedly said: "If you go back to His Royal Highness the Prince, Shi Jian is going to the school field outside the city with the order of the crossbow workshop, look at the time, and estimate that he will be back soon." ”

Zhu Jianji hummed, "Then wait for him." ”

About half an hour.

Shi Xin hurriedly returned, accompanied by the crossbow shop and two craftsmen, one of whom was tall, with thick hair, a high nose and blue eyes, and a beard, and looked like a gringo.

His name was Giuseppe Gasol, and he was skilled in artillery and gunpowder.

European.

Well, at this time, Da Ming called it Taixi people.

The four of them hurriedly saluted.

Zhu Jianji was not exempt from courtesy, looked at Shi Xin with a heavy face, and pinched the momentum of the prince's superior, and said: "Shi Jianzheng, from Jingtai five years, Lone asked you to develop a new type of firecracker until now, it has been three years, and Lone has not urged you once in the past three years, right?" ”

Shi Xin got goosebumps all over his body, and he had the illusion of being stared at by a snake.

It was the first time he had seen His Royal Highness the Crown Prince look like this.

Hurriedly said: "Your Highness, it's okay!" ”

Zhu Jianji's eyes lit up, "Can it be used?" ”

Because his father was seriously ill, Zhu Jianji almost never smiled, and when he heard Shi Xin say this, his mood was slightly better.

And he said, "Get up first, don't kneel." ”

The crowd stood up.

Shi Xin said: "Today, Weichen took them to the school field to test the bullets, which can achieve the basic effect, but due to our technology and craftsmanship level, we cannot perfectly meet the requirements of His Highness, nor can they be produced completely according to the drawings." ”

Zhu Jianji nodded, "If you can reach seventy percent of Lone's requirements, you will be considered successful." ”

After all, it's too cross-generational.

Shi Xin nodded to the gringo Gasol, who went out for a moment and came back to offer the treasure in both hands.

Dai Yi took it.

His hand sank, and he almost stumbled.

Hurriedly hugged it in his arms and presented it to Zhu Jianji - this is the matter that His Royal Highness the Crown Prince focuses on, if it is smashed in his hand, Dai Yi feels that his future celebrant and eunuch will definitely run away.

Dai Yi is smart and knows that with his experience, as long as he follows His Royal Highness the Crown Prince and is loyal and does not make mistakes, sooner or later he will become the chief celebrant and eunuch of the internal officials.

It's fate.

Who told him to become the personal little eunuch of His Royal Highness the Crown Prince when he was young.

Zhu Jianji took it and put it on his knee and glanced at it.

Well, not bad.

Presentable.

It's a long firebolt, and it's a sniper rifle!

Shi Xin said on the side: "Your Highness is wise, according to your requirements and guidance, we used the frying method to forge steel, but after that, no matter what method we used, we could not melt the steel for processing and forging, or the method you proposed, we were able to solve it." ”

Zhu Jianji hummed, "Now that we have solved the problem, Shi Xin, you urge the craftsmen of the Ordnance Supervisor to continue to study this industrial technology and form a complete set of theories and technologies." ”

At the beginning, he designed the drawings of the sniper rifle, and after reading the drawings and design requirements, Shi Xin immediately found the problem - the barrel of the sniper rifle could not be made like a traditional firecracker, or it was not easy to explode.

However, the current level of steelmaking in Daming cannot make stainless steel into molten steel, that is to say, even if the frying method forges medium carbon steel and high carbon steel, it cannot be melted into molten steel for secondary processing.

Fortunately, Zhu Jianji has a theory of half a jar of water.

Knowing that Daming's industrial level cannot burn steel blocks into molten steel, it is limited by the process of heat gathering and heat preservation, in other words, the thermal efficiency is not enough, so refractory bricks are needed.

Limited by the level of mining, Zhu Jianji could only propose to use clay bricks.

Clay bricks are mainly composed of mullite, glass phase, cristobalite and quartz, usually using hard clay as raw materials, calcined mature materials in advance, and then matched with soft clay, formed by semi-dry or plastic method, and fired into clay brick products at a temperature of 1300~1400 C.

It is a refractory brick commonly used in blast furnaces, hot blast furnaces, heating furnaces, power boilers, lime kilns, rotary kilns, ceramics and refractory brick firing kilns.

And the steamed bread kiln in Jingdezhen can reach a high temperature of 1300 degrees!

For this reason, Zhu Jianji also tossed Zhu Qiyu.

Zhu Qiyu was busy playing with prostitutes.

was tossed enough by his baby son, and he had no choice, so he gave a verbal order to the Ministry of Industry, asking the Ministry of Industry to cooperate with the prince and the ordnance supervisor.

After receiving the holy decree, Shi Xin was immediately at ease.

Contact the Ministry of Industry first, the Ministry of Industry was hindered by the holy decree, had to help, the required mineral raw material coefficient was offered, Shi Xin personally went to Jingdezhen, tossing for nearly a year, only to find out the refractory bricks that barely meet the requirements from tens of thousands of finished products.

However, mass production is not possible, and the process is still immature.

However, after there were refractory bricks, the latter ones were easy to do, and the ordnance supervisor built a kiln with refractory bricks outside the city, and after a year of continuous experiments and improvements, it was barely possible to burn the stainless steel into molten steel.

But the efficiency and the quality of the finished product are not satisfactory.

Barely works.

However, after Zhu Jianji's toss, the craftsmen on this industrial line have basically mastered the industrial technology of refractory bricks and stainless steel water smelting, and as long as they are given some time, they will evolve into a complete industrial chain sooner or later, thereby driving related industries.

And this is what Zhu Jianji is going to do after he ascends the throne.

The Ming Dynasty wants to go far away from the Han and Tang Dynasties.

Industry is key!

Zhu Jianji has long had the consciousness of being an industrial emperor.

With molten steel, seamless steel pipes can be obtained using the casting method.

The seamless steel tube can be used to create the barrel of a sniper rifle.

The various parts of the gun body are basically cast by casting method and hand-polished, but there is still an insurmountable process difficulty - spring.

The process of spring steel is too complicated.

Zhu Jianji's knowledge was not involved in this part, so he could only let the steelmaking mill outside the city experiment repeatedly.

So at Gasol's suggestion, Zhu Jianji retreated and adopted the smoothbore mode used by traditional assault guns.

Only then did he barely build the sniper rifle in front of him.

It's a pity that you have to get a bullet when you shoot it, and the trouble is a little troublesome, but it doesn't affect the use.

Of course, it's not so much a sniper rifle as a rifle.

It's already very against the sky!