Imperial City, Noon Gate.

"Lord Wang, this ...... This really doesn't work, the top blames it, and the little ones can't afford it! Don't be embarrassed. The guards at the noon gate saw Liu Hongji's posture and his face turned green.

A dignified prince drove an ox cart, and the guards thought that there was some treasure on the cart, but there was a pile of bricks on it.

Behind him is the Forbidden City, which is the royal land, and if you let an oxcart enter the city from the noon gate, won't the ministers of the court turn the sky?

At that time, the king of Anguo will be fine, and his guard will have to be laid off.

"Rubbing what? This king has a very urgent matter, hurry up, blame it from above, and you can report the name of this king! Liu Hong was gradually rushing to report the good news, but he never thought that he would be stopped by a small guard.

"Lord Wang, don't be embarrassed." The guard knelt down on one knee and hoped that Liu Hong would gradually let him go, but his eyes were on the cow's buttocks.

Again...... Pulled another lump...... Oh, my God!

"What's the noise?" The two were in a stalemate, and Fan Jingwen, who had just left the early dynasty, came from the palace.

"Oh, it's His Royal Highness the King of Anguojun, why is the prince so pretentious?" When Fan Jingwen saw that it was Liu Hongchuan, his tone immediately softened.

The air was filled with the smell of cow dung, and Lao Fan felt that Liu Hongjian had played a little too much this time.

Whether it is a hundred officials or nobles, when entering the Forbidden City, they must get off the horse and get off the sedan chair and walk in.

Don't say it's an ox cart, a horse-drawn cart can't do it!

As soon as he wanted to say a few words, Fan Jingwen's eyes were attracted by the bricks and a lump of hard objects on the carriage, and Liu Hong gradually coaxed and only said that this was a sharp weapon to consolidate the dam mouth, and Fan Jingwen was not calm immediately.

"Release and release, if there is any guilt, there is the official and the prince to bear it, release it quickly!" As the secretary of the Ministry of Industry, Fan Jingwen is now facing not only the pressure of Chongzhen, but also the livelihood of tens of millions of people in the four northern provinces.

If this thing in the car can really solve that problem, why not break the rules once? What's more, although the prince likes to joke, he has never messed around with such major matters of the national economy and people's livelihood.

Seeing that the prince and the second assistant of the dynasty said so, what else could the guards say, they immediately patted their horses and let them go.

"What do you see? Go clean up the cow dung! As soon as Liu Hong pulled the carriage away, the guard yelled at a few of his men.

……

"Youming, that's what you're talking about...... Cement? Chongzhen was dressed in a dragon robe and looked at the things on the ground with his hands behind his back, but he didn't see anything strange.

Liu Hongjian didn't explain, and immediately ordered Wang Erxi, the celebrant who followed behind Chongzhen, to take a hammer.

"Use your strength to smash this brick for Your Majesty!" Of course, Liu Hongjian didn't do the hard work, he handed the sledgehammer to a Han general who was guarding outside the palace gate.

This Han general is still a little flattered by his bright armor, he is just a standing guard.

In order to show his face in front of Chongzhen, the Han general spat in his hand, picked up the sledgehammer and smashed it into the cement-bonded bricks.

There was only a thud, and the bricks were smashed and shattered, but the bricks and cement were still not separated.

Chongzhen hadn't understood the taste yet, but Fan Jingwen's eyes lit up.

"Your Majesty, you see, this cement is really strong, and it has not cracked even after being smashed by such a large external force, and it should be a good material for casting the dam mouth!" Fan Jingwen casually picked up a piece of cement solids from the ground and showed it to Chongzhen excitedly.

"Youming, this thing is easy to produce?" Chongzhen's face is also much better, but the construction of the dam consumes a huge amount of money, and if it cannot be produced in large quantities like the steel, the distant water will not quench the thirst of the near.

"This thing is made of limestone, clay, coal, iron slag and other materials mixed and calcined, we have a lot of materials, the difficulty is the proportion and the control of the heat.

However, after a day and night of experimental research, Chen and Song have now mastered the key, and mass production only needs to build more cement cellars. Liu Hong said in a deep voice.

"Lord, if this thing is used to build a tree, is it feasible?" Li Banghua didn't pay much attention to the bricks, but stared at the concrete on the ground.

He is the secretary of the military department, everything he thinks is the military affairs of the Ming Dynasty, and now the city walls of the Ming Dynasty are all foundations for boulders and paved with green bricks, which is no longer enough to resist the increasingly sharp artillery.

"Of course, building a city wall with concrete is much stronger than bricks, and if it is mixed with the steel bars of the ordnance station, if it is not blown by this king, if the artillery under the current door wants to blast through the city of Beijing, don't even think about it for a month!"

The city gate of the city wall of the capital is seven zhang thick, and the outer city wall is more than two zhang, if it is built with reinforced concrete of the same thickness, it will be bombarded with the current solid cannonballs, and anyone will be desperate.

"Your Majesty, this thing can be used not only for people's livelihood, but also for national defense, it is really a sharp weapon of the Ming Dynasty, and the method of development must not fall into the hands of others!" Li Banghua immediately admonished.

"Well, Youming has made a great contribution this time, since it is your credit, the production should be handed over to the Xishan Workshop, and how many manpower and raw materials are needed can be discussed with Fan Aiqing." The dam mouth problem was finally solved, and by the way, the city defense could be strengthened, and Chongzhen was in a good mood.

With Chongzhen's will, Liu Hong gradually did not allow it, in fact, it was okay to hand over the work of producing cement to the Ministry of Industry, but this thing was the same as many heavy industries such as steel, and the pollution of black smoke and waste water was very serious.

In his own hands, he can still pay attention to the urgency of the war before, and Liu Hongjian didn't take care of it, but now that he has the time layout, he is planning to relocate the steel workshop.

After all, the Xishan Workshop was too close to the capital, and the output and scale of that workshop were too small, so he planned to move all the steel and cement workshops to Zhending Mansion at the junction of Beizhili and Shanxi.

Both steelmaking and cement require large quantities of coal, and the proximity to the coal-producing province of Shanxi is close to local sources and close proximity to three dams.

It's just that the Ministry of Industry and the Ministry of Household have suffered, and now the Xishan Workshop has many technologies that the Ming Dynasty does not have, and the Ministry of Industry can only provide the craftsmen needed by the Xishan Workshop and cannot learn.

The household department is even more bitter, it has become the raw material supplier of the Xishan workshop, and then the Xishan workshop produces and processes it, and then sells it to the household department, although it is a parity, but it also makes the household department Shangshu Ni Yuanlu complain.

After discussing the matters with several masters, Liu Hong was about to leave the palace with a heavy heart, but was stopped by Cao Huachun, the governor of Dongchang Factory.

"Lord Wang, let's go, let's take you to see something fresh." Cao Huachun came to greet with a smile.

"What's the matter? This king is busy! "He has to arrange everything inside and out, and Liu Hong's mood is really not very beautiful.

But he couldn't resist Cao Huachun's enthusiasm, so he had to follow him to see the so-called new things.

The two left the Forbidden City and walked through several streets to the outside of the prison of the Dongchang Yamen.

"Lao Cao, what are you doing when you bring this king to this prison, this king doesn't have that much spare time!"

"It's all here, let's go and take a look, our custodian prince eats a whale!"

Liu Hong gradually frowned and followed in, thinking that if this matter was not new, this old Cao would definitely not be able to eat and walk around.

It was only when he reached the innermost part of the prison that Cao Huachun stopped and motioned to the cell boss to open the door.

Liu Hong gradually covered his nose and frowned, and glanced in.

", I'm a!"