You are the prince, and you are the only one who can play other people's heads as a ball. However, within a month, the renovation of the remnants of Yizhou, which is absolutely impossible, will the prince be joking?

Everyone expressed doubts about Zhu Cilang's words, how could this be possible?

But Zhu Cilang said it with confidence, you are the prince, and you are right. Although everyone is doubtful, they dare not have any objections.

At the moment, the three armies began to camp in the city, and everyone began to prepare, and everyone was confused. You know, repairing the city walls does not mean that you can just build it with mud, it is the people's houses and houses. If they are used to build the city walls, they will be smashed by Jiannu's cannons.

If you want to build the city wall, you must use huge rocks. If you are not in a hurry to work, you can use Sanhedi soil.

What is sanhe soil? It is a building material. It consists of lime, clay or broken bricks, gravel and fine sand. The actual ratio depends on the sand content of the soil. After layering and compaction, it has a certain strength and water resistance. It is mostly used in the foundation or pavement cushion of the building.

There is also a mixture of loess, lime and river sand. After mixing the materials of the three, stir them continuously with a wooden stick, and then blend them naturally after a period of time, and then tidy and turn them up. The wall foundation with three-piece earth ramming is very solid. It can not only bear huge pressure, but also waterproof and soak, and can even be said to be indestructible.

The city walls built by the Ming Dynasty with Sanhedi soil often stood for six hundred years and remained as solid as a rock.

The problem is that the Sanhe Earth takes time to naturally merge. It is absolutely not too late for a month. At that time, the Sanhe Earth had not yet solidified, and it was easily broken by Jiannu.

Fortunately, everyone was numb and they were deceived. Jiannu would not come, and Jiannu would not come. At least, they would not call him in a short time.

But Zhu Cixuan knew that in more than a month, Huang Taiji's troops would arrive in Yizhou. The time left for him was already very tight.

"This prince's order cannot be completed within one month. Military law will deal with it!"

As for how to deal with military law, everyone was not very clear about it. Zhu Cilang just created a tense atmosphere for everyone and had to mobilize their enthusiasm. In this way, the construction could be completed ahead of schedule.

In the camp, Zhu Cixuan gathered all the generals under him and prepared to give orders.

"Xia Dechao, go and gather all the blacksmiths in the general. Recruit all the blacksmith shops in Yizhou City for military purposes. This is the manuscript drawn by this prince. I will smelify iron for me according to the manuscript. If you don't know anything, come and ask me any time."

Xia Dechao was a blacksmith before becoming the Jinyiwei, but after Zhu Cixuan's manuscript, he was still confused: "Your Highness, what is this iron piece?"

"I have measured the city wall, and the thickness is about 1 zhang wide, and you will forge iron sheets that are ten zhang long, seven inches wide and two inches thick according to the width on the manuscript, and then forge these iron sheets into iron cages. General Li, you take Miss Yuan to the outside of the city and transport all the stones outside the city of Yizhou to me, no matter how big or small."

Li Shouyan still didn't quite understand: "Your Highness, the city wall needs huge rocks to withstand the bombardment of artillery. How can this small stone build the city?"

Xia Dechao understood it, and he couldn't help but be overjoyed: "General Li, use an iron cage. Mix the stones with three-combination soil and install them with an iron cage. Isn't this a huge rock? The iron cage is strong and the cannon cannot be bombarded."

Yes, use a large iron cage and stones to build a wall. At this time, the cannons were all solid bullets, and it was difficult to smash them with the power of the shells. As soon as this was said, everyone's faces were filled with joy. Why didn't there anyone think of using this method?

Iron tools were not short of them in the Ming Dynasty. The Ming Dynasty had the most advanced steel smelting in the world in the 17th century. The steel output and quality of this process were the best in the world in this era.

The unearth of the Zunhua Iron Plant site in the Ming Dynasty, this iron plant alone is enough to prove the strength of iron smelting in the Ming Dynasty. It is estimated that at its heyday, there were more than 2,000 craftsmen in the iron plant. The annual iron production was also more than 700,000 tons. The powerful data once again proves China's long history and culture.

The civilian iron smelting has used piston blowers, and the structural function is consistent with that of modern blower equipment.

Moreover, when the sharp blades of tools and weapons in the Ming Dynasty were used to spray the pig iron mouth, the sharp blade had a surface layer of steel structure. Such a knife can be said to have a hair blowing and broken hair.

The pig iron shower technology is used to make the original production tool with wrought iron or low carbon steel as the main body, and there is a certain thickness of rubbing layer on the surface, including carburizing layer and pig iron cladding layer. The carburizing layer has high carbon steel properties, achieving the requirements of hard surface, flexible interior and durability.

Cold weapons can be said to have reached their peak in the Ming Dynasty. However, facing the Jiannu cavalry with strong mobility, the Ming army suffered not the equipment, but the tactics of the cavalry.

In the 28th year of Hongwu in the Ming Dynasty, private mining was allowed, and the private iron smelting industry flourished. For example, although it was the ruined Yizhou City, it was not difficult to smelify iron.

With the iron cage, it can be used to repair the city wall with stones. This method made everyone excited immediately.

However, there is another problem that is more difficult. Cao Bianjiao has been on the border for a long time, and it is common to repair the city wall. He bowed and said, "Your Highness, although this method is very good. It is not easy to transport stones and iron cages to the city wall. We still cannot complete it within a month by relying solely on manpower. At the fastest, it will probably take more than three months."

Zhu Cilang smiled slightly: "So, this matter has to be left to General Cao. You will take people to log outside the city, and cut back all the huge trees that can be used. Also, General Li, when you go to the city to transport stones, if there is not enough wooden carts. You can use a shield to plaster on the ground and push and pull with a rope to save half of the effort."

Zhu Cilang's behavior once again refreshed everyone's perception. All people's previous doubts about the little prince disappeared. Some of them began to feel awe of Zhu Cilang. The prince was the prince, and I was afraid he would have his own blessing. Otherwise, why did he know so much? No one could imagine these incredible techniques.

There are many skilled craftsmen in the army, and Zhu Cilang brought tens of thousands of people. Although he could only fight five or six thousand, the remaining people were not good at fighting, but they were good at working.

Cars of stones were pulled by carriages or pushed by humans. Or, as Zhu Cilang said, heavy stones were placed on the shield, and a dozen people in front pulled the people behind with ropes and pushed forward.
Chapter completed!