After choosing the show girl Zhu Cijing, he can finally handle the important matter. As for the preparation of the wedding, his mentor Xu Guangqi and the two empress dowagers took care of it, so he didn't have to worry about it at all. What he wanted to do most now is a steam ship, but some things must be handled first.

The most urgent issue is the issue of prisoners. This battle on the three major grasslands captured more than 300,000 Manchu and Mongolian armies. Zhu Cijing had ordered the three armies to pull all the prisoners out of the capital. Of course, it was not to pull them over and chop them up. He wanted to use these prisoners to build a new urban area east of the capital.

According to the plan before the New Year, Dongcheng District mainly opened shops and built workshops for merchants gathered in the capital. The imperial court did not need to build too many things. It only took the city walls, repaired the roads, and then divided the land into pieces. The price was marked and sold at a price was almost done. As for the house, the merchants who bought the land built it themselves.

This time, the prisoners were guarding the prisoners to build the city walls, including the cavalry of the Ning army and the Tianxiong army. The Qin army and the Tianxiong army had no experience in building the city walls, but the Guanning army was different. They were the authentic Liaodong army, and they were much more powerful in building the city walls than the Dingliao army. Under the leadership of Cao Wenzhao, the city wall was rolled upwards. In just about ten days, the main part of the city wall was actually completed!

Seeing that they were so powerful in building the city walls, Zhu Cijing simply asked them to build a villa area of ​​the State Guesthouse outside the Dongzhimen Gate near the Imperial College, which is the Daming Academy of Liberal Arts and Sciences, for the residence of envoys from various countries and juren from the vassal states who came to the Ming Dynasty to take the exam. The planned plan for this State Guesthouse is about 10,000 acres, and all of them are built into a simple and elegant two-story small building, with pavilions, pavilions, pavilions, gardens and rockery in the middle. It can accommodate 20,000 to 30,000 people at the same time. After completion, it will definitely become a place where envoys from various countries are amazed by it.

After almost the same matter in Dongcheng District was handled, Zhu Cijing finally had time to organize the development of steam ships. Of course, this development is different from the development of later generations. What he called development is actually to draw sketches and let Bi Maokang and others do it!

It was still his private study or a few confidants. The development of the steamship only involved the Ministry of Works, so Zhu Cijing only called Bi Maokang, Wang Zheng and Song Yingxing. These three people shared the joys and sorrows with him for more than ten years. I don’t know how harmonious the relationship was. After Bi Maokang sat down, he even said with a courage to tease: "Your Majesty, you are about to get married. You may not have time to teach us old ministers in the future. Tsk tsk, three thousand beauties, some are busy!"

Zhu Cijiu rolled his eyes and said angrily: "Is there one hundred and twenty? The others are all palace maids, but some of the North Korean and Japanese women are really good. I didn't choose any of them, so I kept them all for you. Why don't you give you one or two hundred so that you can also work hard?"

Bi Maokang hurriedly bowed: "Your Majesty, you should spare me. I am so old that I can't stand them."

Zhu Cijing then said proudly: "Okay, I will keep it for you first, and you will just say when I want it."

Hehe, I will make you lose my temper with me and I will never be able to kill you.

Bi Maokang dared not talk about the Three Thousand Beauties. He quickly pulled the topic and said, "I wonder what happened to the emperor this time?"

What are you doing? Of course you are building a steamship, but Zhu Cijing did not give the answer immediately, but instead guided him habitually: "Meng Hou, do you think sailing boats are faster or trains are faster?"

Bi Maokang thought about it and replied in a normal manner: "This depends on the direction of the wind and the direction of the water flow. If the wind is smooth, the sailing boat may be faster than the train. Other times, the train will pass the sailing boat faster than the sailing boat."

Zhu Cijiong continued to guide: "What if there is no wind, it won't be smooth?"

When Bi Maokang heard this, he couldn't help but say, "Master, the sailboat cannot move without wind or water. How can he compare the speed with the train?"

Zhu Cijiu just wanted them to consider how the boat would move without wind and water. He continued to guide and said, "Can't you still row?"

Bi Maokang was even more strange. He said a little incredible: "Prince, sailing boats are usually big ships. If you row, how big the oars would be, and ordinary people can't row such a large oar!"

Zhu Cijing asked directly: "If the person can't move, is there nothing to move?"

When Bi Maokang heard this, he frowned and pondered. Soon he said excitedly: "Does the emperor mean to use steam pistons to drive the oars?"

Zhu Cijiu slapped his face and encouraged him: "Smart, that's what I mean, but it's not enough. Chang Geng, Liang Fu, you think about it, how can the boat run as fast as a train without wind or smooth flow."

The ship is actually not complicated, especially the paddle wheel type. You can understand it with just a glance. The key is that they have never seen it before!

The three of them frowned and pondered for a long time, but they didn't come up with any good solutions. Zhu Cijiu couldn't help but continue to remind: "What if a lot of oars are combined and made into a circle?"

Song Yingxing immediately replied excitedly: "What the emperor means is to make a water truck?"

Zhu Cijing nodded and praised: "Yes, that's it, but it can be made wider, and it's about the same width as the hull, and the propulsion force is greater!"

Bi Maokang and others' eyes burst into hot light when they heard this. Zhu Cijiu knew when he saw them that he didn't need to draw sketches. These people all understood what the paddle wheel propulsion system was going on.

However, the ship not only has a paddle wheel type, but also a propeller propulsion type. Zhu Cijing thought about it and suddenly picked up a piece of paper and started to stoke it gently.

The three of them were stunned when they saw the emperor's appearance. It was winter. Although there was the latest heating system in the study, it was not as hot as it was to fan the flames. Could it be that the emperor suddenly became crazy!

Zhu Cijing didn't care at all when he saw them surprised, but instead pretended to be mysterious: "I don't know why I want to fan the flames, right?"

The three of them nodded foolishly, really not understanding what the emperor wanted to do.

Zhu Cijing reached out his hand holding the paper to the middle of the table, skewed it a few times, and then asked: "Did you see clearly?"

The three of them nodded foolishly again. Such a simple action was done in front of them. How could they not see clearly? The emperor was really sick!

Of course Zhu Cijing was not sick. While gently inciting the white paper, he explained: "Have you noticed that this paper will deform when it fans the flames?"

The three of them naturally saw it, and they nodded together.

Zhu Cijing suddenly asked: "Do you know why the paper deforms?"

The three of them stopped nodding and began to shake their heads.

At this time, Zhu Cijing stopped the action of fanning the flames, and directly used his other hand to gently lift the white paper into an arc with his palm, and then asked: "Is it the same as the deformed appearance when he was fanning the flames just now?"

The three of them looked carefully and found that they were indeed similar in arc as when they were just fanning the storm, so they began to nod.

Zhu Cijing then explained: "This proves that the paper was subject to resistance when fanning the flames, and it was resistance that deformed it."

Now that I told them that they naturally couldn't understand aerodynamics, the three of them looked confused.

Zhu Cijing pointed to the slowly rotating fan behind the fireplace and said, "When you made the fan, did you fall back because the base was too light?"

They did encounter this when they were having a fan, and it was Zhu Cijiu who taught them to increase the base to stand firmly on the ground.

Zhu Cijiu continued to guide: "This proves that the fan also encountered resistance when fanning the flames, and the resistance was still very large. Think about it, if the fan blades are larger and then installed at the bottom of the ship, can it push the ship forward?"

When the three of them heard this, they all suddenly realized that this was the propeller propulsion system. Zhu Cijiu just used a more intuitive way to slowly guide it. If he directly mentioned the propeller propulsion system, the three of them would definitely not understand it.
Chapter completed!