Hu Guang thought so, so he ordered: "The secretary of the Ministry of Communication and the eunuch of the War Bureau. ”

The training in Beijing is insufficient, and there are many old and weak people, and it is too late to say anything now, so we can only put it aside for the time being.

After a while, Nan Juyi, the secretary of the Ministry of Industry, and Liu Shiduo, the eunuch of the Soldier Bureau, immediately reached the top floor.

Hu Guang's face was serious, he looked at them and said, "You should have seen the siege battle just now, right?" Do you know why I summoned you and the others? ”

He did not use the title of "Qing Waiting", expressing the unhappiness in his heart. After Nan Juyi and Liu Shiduo glanced at each other, Nan Juyi bowed back and said: "There are many firearms with explosive chambers, and the city defense equipment is insufficient, and the minister is guilty!" ”

According to a total of statistics, two artillery guns were blown up, and more than 30 bird guns were blown up, which was only the defense of a section of the city wall. If all the captives come to attack and the city defense line expands, it is estimated that there will be more firearms exploding.

There are things that are obvious to all, whether it is Nan Juyi or Liu Shiduo, they can't deny it, and they also know that there must be an explanation for this matter, and when they heard the emperor's questioning, they directly confessed first.

Hu Guang saw that his attitude was good, so he softened his tone a little and said: "Nanqing has just taken over as the secretary of the Ministry of Industry, if I punish you for this, it will be unfair." But Qing also saw that Jianyu was brutal and eyed Jingshi. The supervision of urban defense equipment must be stepped up, and it is not too much to rush work day and night. But at the same time, we must also pay attention to the quality, and if there is a mistake, I will never spare it! ”

According to the memory of Emperor Chongzhen, he knew that the original secretary of the Ministry of Engineering was Li Fengxiang, who was dismissed before he crossed because of poor ordnance, and also killed three Lang Zhong who were in charge of specific affairs.

Hu Guang did not punish Nan Juyi, in fact, there are two other reasons. One is that I still know from the memory of Emperor Chongzhen that this Nan Juyi served as the governor of Fujian about three years after the Apocalypse, and resolutely counterattacked the invasion of the Dutch, launched the Battle of Penghu, and drove away the Dutch, which can be regarded as a contribution to the country.

Another reason is that whether it is artillery or birds, those soldiers are not well trained, panicked in battle, and overfilled with gunpowder will also lead to explosions.

When these thoughts flashed through Hu Guang's mind, he was suddenly stunned, your sister, why did you forget this. Without waiting for Nan Juyi's response, he immediately added: "The newly made artillery and bird guns are determined by craftsmen to determine the reasonable gunpowder, and then they are fixed with paper......

He talked about one of the most basic common sense in later generations, that is, the method of fixed ammunition, and then immediately looked at Man Gui and said: "Man Qing, you must speed up the inspection of the existing ordnance, and if the quality is not up to standard, it will be returned to the furnace, and if the quality is passed, the soldiers will also prepare the fixed ammunition, and Nanqing will supply it as needed!" ”

"Ding, achievement value +1, from the Ministry of Industry Shangshu Nanjuyi!"

"Ding, achievement value +1, from the Palm Seal Eunuch Liu Shiduo of the War Bureau!"

Hearing the sound of the system's prompt, Hu Guang couldn't help but sigh secretly, Man Gui didn't contribute, he must have been squeezed dry by himself. Since then, there has been one less person with contribution value!

"Your Majesty is wise!" Nan Juyi and Liu Shiduo bowed down and praised in unison.

"The last general obeys!" Man Gui's answer was always different from others, and after he finished speaking, he even looked at Nan Juyi and Liu Shiduo, and demanded loudly: "When making fixed ammunition, you still need to check the craftsman, and you must not confuse the use of gunpowder!" ”

When Hu Guang heard this, he asked a little curiously: "Man Qing, what is the use of confusing gunpowder?" ”

"Back to Your Majesty, gunpowder is divided into a variety of uses according to different proportions, including for launching and explosive......" Speaking of these, Man Gui is also a professional, and he talked eloquently.

In fact, at the end of Wanli, after the defeat of Salhu, the imperial court summed up the lesson. One of them was proposed by Ying Zhen, the official in the household department at that time, to reform the martial arts and improve the rationality of the content of the examination.

The original martial arts examination only set up a strategy and a bow and horse martial arts assessment. In this reform, the content of the examination of "battalion formations, mines, gunpowder, chariots, etc." has been added.

Although Man Gui is not from a martial arts background, he has risen from the bottom of the army to accumulate merit, so it is naturally impossible not to know these contents.

But Hu Guang, the first time I heard it, it was very fresh, and I listened very attentively.

Nan Juyi saw it on the side, and he couldn't help but breathe a sigh of relief in his heart. I was really frightened by the emperor just now, and casually said the practice of fixed ammunition, almost thinking that the emperor was heroic and a genius who was not born in the world.

Come to think of it, the emperor used to be just a vassal king who grew up in the deep palace, and even if he moved out of the palace, he never left the palace of King Xin. How much insight can a young man with little experience have, and the mention of a fixed-loading bullet suddenly popped up just now is already amazing.

Looking at the emperor's performance at this time, it can be regarded as normal. Nan Juyi thought about it and smiled secretly: What about the Son of Heaven being extremely smart, wise and martial, that is just a polite remark.

However, although he thought so, he couldn't hold back the turmoil in his heart, and as soon as Man Gui finished speaking, he directly added: "Your Majesty, all gunpowder is mainly saltpeter and sulfur, supplemented by plant ash. Nitrate to yin, sulfur to yang, yin and yang two gods meet in a seamless tolerable. It is also out, the characters are stunned, and the soul is scattered and shocked. Where nitrate is the main straight, the direct hit is nine nitrate and one sulfur. Sulfur main horizontal, critter nitrate seven and sulfur three......"

Man Gui mainly talked about the use, and he explained from the specific ingredients. Fortunately, Hu Guang had the memory of Emperor Chongzhen and could understand his words, saying that saltpeter has a strong longitudinal explosive power, so the gunpowder used for shooting is nitrate nine sulfur one; The horizontal burst of sulfur is powerful, so the gunpowder component used for blasting is nitrate heptasulfide......

Hearing this, Hu Guang's mind suddenly immediately remembered the weakness of the artillery he had discovered before, and thought about finding a good defensive method, and suddenly a term appeared in his mind.

He immediately interrupted Nan Juyi's slightly swaggering words and said: "Yes, I have an idea, in the subsequent siege battles, the Hongyi cannons, general cannons and other iron bullets should not waste gunpowder, only when there are slow-moving or immobile large siege equipment outside the city, will they be destroyed by cannonball......"

Hearing the emperor speak, Nan Juyi had to shut up. However, when he heard what Hu Guang said, he was surprised, and wanted to advise the emperor from a professional point of view.

At this moment, I heard Hu Guang continue: "Most of the gunpowder is mixed into explosives, and then made into large explosives, using iron shells, or porcelain shells or whatever, and requiring it to be filled with things that hurt the enemy, iron nails, gravel and other things with great lethality. Well, the outer layer can also be filled with flammable materials such as tung oil. How about lighting the fuse and throwing it into the siege pile under the city to explode, or using a trebuchet to throw it into the pile of siege captives at a distance to kill and injure the captives? ”