"Do you know the space it takes up for the same weight of water, ice, and water vapor?" Zhao Feng then asked.

"Huh?" Lu Shen looked at Zhao Feng in disbelief, "Does this water vapor have weight?" ”

"Of course, everything in the world has weight, but now due to the conditions, we can't measure the weight of water vapor." Zhao Feng nodded.

"The wind can tell you that the same weight of water vapor is much greater than the weight of water!" Zhao Feng said, "The space in this kettle is not enough to hold the water vapor, so the water vapor has to be pushed out, and the kettle has to be squeezed out, so the lid of this kettle jumps and jumps!" ”

"I see!" After listening to this, Lu Shen nodded thoughtfully.

In fact, there is a strong relationship here, and Zhao Feng didn't dare to say anything more, so he didn't introduce this term, but just explained it simply! If you look into it carefully, Zhao Feng's explanation is not too correct, but it is enough to guide the manufacture of steam engines!

"This task is entrusted to you, and you should think about how you can use the power of steam in our production and life! If you need anything, just ask, I will dispatch the resources that Liaodong can dispatch to you! Zhao Feng commanded.

"Yes! Shin will definitely complete the task! Zhao Feng trusted him so much, Lu Shen was very excited, and he made up his mind to study this thing.

"Of course, you can also go to Liaodong Academy or find some like-minded friends in this craftsman workshop to help you complete this task together!" Zhao Feng nodded with satisfaction.

"Yes!" Lu Shen nodded solemnly.

"Well, you are good, good at discovering the small details around you, don't forget this advantage of yourself in the future!" Zhao Feng said, "I'll go first, if you have any questions, come to me at any time!" ”

This time, Lu Shen didn't speak, just stared at the direction where Zhao Feng left, and then nodded solemnly again.

Don't say Lu Shen, in fact, Zhao Feng himself is very excited, but as the owner, he can't be too intense, enduring the excitement, Zhao Feng returned to the mansion, got into Bian Xue's house, and hugged Bian Xue, who was doing embroidery, in his arms.

"Cher, that's great, it's amazing!" Zhao Feng hugged Bian Xue in a circle, and shouted cheers.

"Wind ...... Brother Feng, I have a needle in my hand, you let me down first! "Bian Xue was a little blindsided by Zhao Feng's actions, what is the situation with Zhao Feng? How can you be so excited?

"Haha! Cher, I'm so happy, so happy! Zhao Feng laughed and put Bian Xue back on the bed.

Bian Xue hurriedly packed up the things in her hand, and then came to ask, "Brother Feng, what is the good thing?" Could it be that Yuan Shao surrendered? ”

Bian Xue's words are really a joke, how could Yuan Shao come to surrender?

"Of course not, but it excites me more than Yuan Shao's surrender!" Zhao Fengdao.

"Oh? What's that going on? Xue'er can't guess, Brother Feng will tell others! Bian Xue blinked her eyes, looking pitiful.

"The steam engine, it's the steam engine that is about to appear!" Zhao Feng said, the excitement in his tone was hard to hide!

"What? Steam engine? Bian Xue was stunned, this thing after more than 1,500 years is about to be developed now?

"That's right, it's the steam engine, just like that Watt in later generations, there is a man named Lu Shen in our Liaodong who discovered the secret of the kettle lid!" Zhao Feng still said excitedly.

"It's great!" Bian Xue is also very excited, 1,500 years earlier than hope, if there is no mistake in the future development, how strong should the Han be, what Ou Meng in the future, what Mi country, where will it be the opponent of the Han?

"That's it, I just briefly explained to him the source of this motivation and asked him to think independently about how to apply this thing to industry! I think that in less than two years, this Lu Shen will be able to give me a satisfactory answer! Zhao Feng nodded and said very confidently.

"Then congratulations to Brother Feng!" Bian Xue said sincerely. Zhao Feng is so excited, and so is she! Bian Xue's excitement is not only because of the steam engine, but also because Zhao Feng is excited, Zhao Feng is happy, so she is also excited and happy!

"I'm so happy!" After so long, Zhao Feng is still very excited! Others don't know what this little discovery means, but Zhao Feng knows!

"Tuk Tuk Tuk ......" was when Zhao Feng was excited, and there was a knock on the door.

"Who?" Zhao Feng asked.

"Master, you are really here, Master Wang outside asks to see you!" Outside the door came the slightly old voice of the countryman.

"Okay, you tell him to wait, I'll be there soon!" Zhao Feng nodded, but he wondered in his heart, could it be that there was something good about it? Is today his lucky day? How can good things come one after another?

Before thinking about it, Zhao Feng left Bian Xue's room and strode to the front hall.

"Master Wang, what's the matter?" Zhao Feng asked.

"Lord, the keel waterwheel and the crossbow have been manufactured!" Master Wang said.

"What? Are you telling the truth? Zhao Feng was pleasantly surprised, it seems that today is undoubtedly his lucky day, and this good thing has happened one after another!

"That's right, according to the drawings given by the lord, we have made the keel waterwheel and the crossbow, and it is not available for experiments yet, please go and watch our experiments together!" Master Wang replied.

"Good, good!" Zhao Feng nodded hurriedly, "Let's go now!" ”

He followed Master Wang to the outskirts of the city, next to the river. I saw that the river was troughed with wooden planks, and the tail was immersed in the current. At the other end there is a small axle, which is fixed to the wooden frame of the embankment. In the middle, there are knots, like a keel-like structure.

This is the keel waterwheel! It is an important device that can raise the water of the river by one to two meters and use it to irrigate the farmland.

Zhao Feng looked at the waterwheel, was very satisfied, and nodded: "Let's start!" ”

When the craftsman heard the order, he immediately stepped on the crutch to make the big wheel axle rotate, driving the leaves in the trough to scrape the water upward, and in an instant, the river water poured into the higher fields!

"Good! Good! Zhao Feng praised loudly, this waterwheel is undoubtedly very successful!

Hearing Zhao Fengde's praise, all the craftsmen present laughed!

"In the future, we can save this manpower by using the ox to turn the gears to turn the cow rollover!" Zhao Feng said, "Or think about using flowing water or wind, this needs to be played freely!" ”

"Yes!" Master Wang hurriedly wrote down Zhao Feng's words.

"Well, let's go see the crossbow!" Zhao Feng nodded, compared to the keel waterwheel, he wanted to see the crossbow, this offensive and defensive weapon!

(End of chapter)