Even Zhu Gaoyao was a little surprised, this temperature is equivalent to the temperature after central heating in the north in modern winter!

Therefore, the minimum requirement is 18 degrees, but it can generally reach more than 23 degrees, and even more than 30 degrees in many places!

Zhu Gaozhen walked in the front, Zhang Yingzhen followed behind, Yang Shiqi and Su Wu were on the left and right, and those ministers were following behind them.

What's going on?

Zhu Gaofu looked around and soon found the cat's greasy.

Because he actually saw something similar to a radiator!

Zhu Gao immediately walked to the edge of the train box, and then knocked on the train wall.

"It's two layers of iron, and some wood or something?"

There are a lot of uneven places on the body walls on both sides, although the craftsmanship of the Ming Dynasty is not very fine, but there will not be so many uneven areas!

This is clearly using a new, immature technology.

"Your Majesty is really discerning, Weichen wants to wait for His Majesty and the adults to get in the car, and then explain it to the adults, but I didn't expect Your Majesty to find out as soon as he got in the car!"

"Don't be verbose, I ask you, did you make a double-layer structure with an insulation layer inside?"

Zhu Gaoyi pressed it hard with his arm again, and found that it seemed to be very hard inside, not like sawdust or something.

"Stone bricks, white plaster, and a lot of walls made of clay fired in one go!"

"And the inside is mixed, grass clippings, cotton wool, and some untidy places are filled with stones and white ash, and finally two layers of thick iron sheets are applied to the outside, and they are fixed!"

"So the walls of this train have many advantages such as strong, sturdy, insulation, fireproof and durable, this disadvantage is that it is a little heavier, but it is also much lower than the cost and weight of all metal!"

I see!

"It is worthy of His Majesty's attention, Lord Zhang is really a strange person!"

The ministers praised one after another, and even Yang Shiqi and Su Wu began to recognize Zhang Qixin's ability from their hearts.

Zhu Gaojiao never thought that making a train, this new one, can use composite materials for me!

If he didn't guide himself, I'm afraid that this Zhang Qixin would have been able to study a lot of ways by himself.

Of course, it was mentioned that he should not be an official, but a craftsman, and be supported by the power of an emperor or official!

"I see!"

Zhu Gao nodded, and then pointed to something that was exposed outside, like a pipe.

"If I guessed correctly, Lord Zhang, there are some drainage pipes here, and the reason why the township is so warm is because the hot water flowing in this pipe is from the front of the car!"

After Zhang Qixin heard this, he immediately admired the five-body throw.

"Your Majesty is wise, what the villain has designed with great effort, Your Majesty can see at a glance!"

"It is worthy of my emperor, the talent of the villain, it is really not as good as your majesty!"

Really?

Even Zhu Gaoyi himself was a little confused, good guy, even the future heating has been studied by you!

Let's just say, there's something else in this carriage that you can't figure out.

"Wechen thought that every winter time when the night is cold outdoors and the leather carriage must be difficult to keep warm, so Wechen thought of such a way, when making the internal iron sheet, fix a layer of water pipe on the outside, and add a heat sink around the water pipe!"

"Each carriage is made separately, and at the beginning and end of the carriage, two pipes are extended, wrapped in sawdust and rags, and when needed, hoses are attached and rags and sawdust are wrapped to ensure that the heat is not lost!"

"Every time you use it, open the valve above, and the one-way high-pressure valve will spray out the high-pressure water inside, and then flow back to another low-pressure one-way valve into the boiler!"

The one-way valve, which is similar to the principle of the one-way piston, was used by the ancients when they took water, but now it is used by Zhang Qixin for pressure reflux.

Originally, Zhu Gaoyi was puzzled about how he made this pump, but he didn't expect to use such an ingenious method.

Although the efficiency is a little lower, such a large car does not need to lose much heat to warm it up.

"Yes, it's a genius design!"

"Haha, I have you Zhang Qixin, Daming has Zhang Qixin, why not be prosperous!"

To have such a capable leader, Zhu Gaoyi was naturally very happy in his heart.

"Weichen is afraid, I'm afraid it will be difficult to bear, so praised!"

"Modesty, what modesty, I say you are, you are!"

Zhu Gaoyi helped Zhang Qixin up, but he didn't expect to get such a treasure during his trip to western Sichuan, which was completely unexpected!

"Okay, okay, don't sit there, it's cold outside, let's get in the car first!"

"Notice, a quarter of an hour later, the train will leave on time!"

As for the safety of the train, it is not within the scope of Zhu Gao's consideration at all, after all, taking the train, even if it is at a top speed, it is only thirty or forty, and there is such a thick iron sheet, even if it hits a big stone, there will be no danger.

"Yes!"

Zhu Gao. A little eunuch behind him immediately ran to the head of the carriage, opened the door and went to the locomotive.

"In addition, this is my first train in the Ming Dynasty, and it must have a name, just like every army has a title!"

"Please also give your majesty a name!"

The first train, like a dragon going out to sea, galloped above the vast number of people.

"Then the name of this train is the Snow Dragon!"

Zhu Gaofu made a final decision, and after hearing the name of the Snow Dragon, the other ministers also pondered, from which angle should they tout His Majesty's good meaning and good talent?

Along the way, the ministers were either admiring the warmth and comfort of the train, or admiring His Majesty's wisdom and martial arts and Zhang Qixin's wisdom and learning, but also to the Ministry of Industry, no, it should be called the Ministry of Industry now, and directly blew all the people in the Ministry of Industry into the sky.

Zhu Gaoyi just enjoyed this journey and flirted with Zhang Yingzhen on the side.

It's not easy, I didn't expect to be able to re-experience the feeling of riding a train in our big name!

Although the speed of this train seems very slow in your eyes now, in the Ming Dynasty, this may be a speed that is difficult for most of the thousands of horses to achieve!

And you don't have to endure the pain of bumps, wind and sun.

"Tonight, I'm going to have a big feast for everyone!"

"In addition, all the people who participated in the construction of the railway, I have a lot of people, and the Ministry of Industry is naturally indispensable!" (End of chapter)