Time flies, and in a blink of an eye, it is more than a month.

In order to speed up the construction of facilities, Zhuqiuzhu migrated tens of thousands of blacksmiths, carpenters, stonemasons and bricklayers and other craftsmen and their families.

At this moment, the Long River has changed a lot. I don’t know how many piers have been built on both sides of the Taiwan Strait, such as workshops, casting workshops, ironworking workshops, copper smelting furnaces, iron smelting furnaces, etc.

Although none of these have been completed, the scale has exceeded that of Zhejiang and Sichuan.

At this time, the Longhe Shipyard, which was far larger than the Yunyang Shipyard, was also under rapid construction. The entire Longhe bend was surrounded by various smelting farms, casting farms and processing workshops.

On this day, Zhuqizhu came to a processing workshop next to Longhe Shipyard. It was originally used to process shells, but now the craftsmen in the workshop did not make shells, but thunder.

The Song Dynasty appeared in the sky, which was probably the same as the grenades in later generations, which were just like the jars filled with gunpowder. They were lit and threw them out to hurt the enemy after being fired.

What Zhu Qizhe wanted to do was grenades, but in order to facilitate Bi Maokang and the others to understand, he still borrowed the name Botian Lei.

Of course, the sky-burning thunder of the Song Dynasty must be less powerful than the grenades of later generations. To put it bluntly, it means that the pottery jar is filled with gunpowder.

The sky-booming thunder that Zhuqiuzhu taught Bi Maokang and others to make is different from the sky-booming thunder of the Song Dynasty. The shell is cast with copper, and the appearance is a bit similar to the pineapple-shaped grenades of later generations. Not only is it filled with gunpowder, but there are also many triangular iron pieces.

This kind of iron sheet was also based on the structure idea proposed by Bi Maokang based on the red utensil.

Originally, Zhuqiu told him that the shell of the Sky Thunder was made into a pineapple-shaped shell, which would help increase its explosive power. After all, if it was a shell of the same thickness, most of the power of the gunpowder would be wasted on the explosion shell, and the pineapple-shaped shell was covered with grooves, and the dent position was quite thin, so there was basically no need to waste the power of the gunpowder and it would burst.

However, according to this prompt, Bi Maokang changed the broken iron needles filled in the explosion bomb and the thunder into triangular broken iron sheets.

After all, only the tip of the iron-breaking needle has strong lethality. If it is sputtered horizontally on a person, even thicker cotton clothes cannot be cut.

The broken iron sheets of triangles are different. The three corners and even three sides have strong lethality. Basically, as long as the upper and lower parts of the triangle are not sputtered flat onto a person, any other angle can cut off the clothes or even leather armor to hurt people.

The reason why they used broken iron needles in the past was that broken iron needles were easy to cast. Basically, they just inserted some holes with bamboo sticks on the compacted fine sand and poured the iron into it, and they could cast a bunch of broken iron needles at once.

It is troublesome to make triangle-shaped pieces of iron. If you want to make it fast, you can only break the cast thin iron plate. The problem is that the cast thin iron plate may not be a triangle. Any shape is possible.

Bi Maokang actually wanted to change the broken iron needles filled in the burst bomb into triangle broken iron sheets, but he has been struggling that the broken iron sheets of triangles are difficult to process, so he did not do it.

As soon as Zhuqiu described the pineapple-shaped shell, he came up with a solution. He just carve a mold covered with triangles with raised triangles with wooden boards, then pressed the compacted fine sand, and poured the iron upwards. In this way, what is cast is a large piece of thin iron plate with grooves. As long as you knock it with an iron hammer, it will be a pile of triangular broken iron pieces.

I have to say that Bi Maokang is really talented in designing weapons and equipment.

Zhu Qizhu took a triangular iron piece smaller than his fingernail and looked at it carefully, and a hint of admiration appeared on his face.

This small iron piece has many times the lethality of the iron-breaking needle. Not only does its three corners have strong lethality, but even the three sides knocked with an iron hammer are also very pricked. I don’t know how Bi Maokang thought of it.

At this time, Bi Maokang was taking several craftsmen to fill the processed Thunder shell with gunpowder and broken iron pieces.

The new type of thunderbolt also uses flint ignition, but this kind of thunderbolt is much simpler to process than a burst bomb, because the shell is cast, just clean the fine sand on the surface and inside, and then threads are used to put them out on the inner wall of the opening.

The only troublesome thing is the plug on the top, because the plug not only needs to be threaded on the outer wall, but also needs to be equipped with a flint ignition device on it.

Of course, these are much simpler than processing a burst bomb. You should know that the outer wall of the burst bomb has strict size requirements and must be polished to be extremely smooth.

After a while, several people were busy, and the sky-booming thunders were finally installed. Zhuqiu took the finished product into his hands and a trace of dazed look appeared on his face.

The appearance of this thing looks like a reduced-type grenade lighter, so he bought one like this.

All kinds of his previous life could not help but come to his mind. He recalled for a while, then he sighed secretly, handed over the sky-booming thunder to Ning Choudan, and said seriously: "Try finding a few secret guards with quick hands and feet, remember, be sure to pay attention to safety."

Upon hearing this, Ning Choudan hurriedly called several secret guards and asked them to carry the thick iron barrels specially used for testing, and take the sky-blasting thunder to the test site outside.

Soon, everyone came to a simple test site.

The entire test site is a piece of sandy land, but a pile of wooden stakes are just a hundred steps away.

Zhu Qizhe came forward and explained it to himself. Then several secret guards carried the thick iron barrel and took the sky-booming thunder to the middle of the test site.

The distance of these 100 steps is definitely a bit far. It would be great if the average person could throw it out thirty steps away.

After several secret guards arrived in the middle of the test site, one of the secret guards took a few steps forward and carefully tweaked the small iron wheel on the flint several times.

"Hiss", a burst of white smoke came out, and the lead was quickly lit.

The secret guard quickly threw the sky-burning thunder in his hand towards the wooden stake.

"Boom", with a loud bang, the sky thunder burst, and dense black dots appeared on many white wooden stakes.

Zhu Qizhe took out the telescope and looked at it, and his face suddenly showed a look of satisfaction.

He was about to let the Secret Guard try the remaining few thunders, but Ma Qiancheng suddenly rushed over and walked to him and whispered: "Prince, the Ministry of War has sent another urgent document."

When Zhu Qizhu heard this, he couldn't help but smile and said, "Are you urging you to send troops again?"

Ma Qiancheng said helplessly: "Yes, the war in Chengdu is tight. General Du Wenhuan and Yang Yumao led more than 20,000 Huguang Tunwei and Sichuan Tunwei to fight against She Chongming's main force."

Zhu Qizhuo still smiled and said, "No, no, they should be invincible. You reply to the court and are replenishing the source of troops and collecting food and grass. It is estimated that it will take half a month to go to the war."

In fact, at this moment, their troops had already been replenished. The Qi family army, the Imperial Guards, the Pingdong Army, and the 10,000 young and strong soldiers were already full. Even Ma Qiancheng recruited 10,000 white-rod soldiers.

At this moment, they are a total of 50,000 troops, and there is no need to supplement them.

As for food and grass, Chongqing Prefecture City has some.

Ma Qiancheng didn't know why the little prince had to delay for half a month, so he could only bow helplessly and said, "I understand."

Zhu Qizhua nodded slightly and said to Bi Maokang: "Test it carefully today. If there is no problem, hurry up and make a batch of 3,000 in half a month. Isn't it okay?"

Bi Maokang nodded without hesitation and said, "No problem!"
Chapter completed!