After Fatty Sun left, Zhao Hao started thinking on the kang.

Zhao Shizhen and Zhang Jian, who were serving on the side, saw him draw a sketch that looked like a stove with something like a hanging rod next to it.

Of course, if a soul painter like Mr. Zhao doesn't explain to you, you won't understand what he is painting.

"Uncle, what is this?" Zhao Shizhen finally couldn't help asking.

"What do you guess?" Zhao Hao looked at his sketch for a while, then looked at the two future genius mechanical experts in front of him, and was somewhat undecided.

"Could it be..." When Zhao Hao was instructing Fatty Sun just now, Zhao Shizhen was right beside him. How smart he was! He immediately thought of what his uncle had said during the trip to Xishan last year.

"Automatic water-pumping machine?"

"Smart." Zhao Hao gave a thumbs up.

Yes, he drew the Newcomen steam engine. This is also the limit of what can be achieved under the current technological level... As for the Watt type, don't even think about it before there is a steam boring machine.

The principle of the Newcomen machine is very simple, and its manufacturing process is not as demanding as that of a bird gun.

But Zhao Hao's ability to do things is almost zero, and even if he was killed he wouldn't be able to make it.

Of course, once these two mechanical masters mature, manufacturing it will be a piece of cake.

But that was two people more than ten or twenty years later.

Zhao Hao's original plan was to teach them junior high school level physics and mathematics. After they learned the scientific manufacturing method, he would let them challenge the Newcomen machine.

But who could have thought that the eldest princess's mother would fall from the sky? This allowed him to get his hands on the mine at least two years ahead of schedule.

The schedule for manufacturing the automatic water pump will naturally be advanced...

But now, the level of these two people can only be regarded as handicraft enthusiasts. Can they take on this glorious and arduous task?

"Uncle, tell me about it quickly, I promise to make it for you!"

Zhao Shizhen was eager to try, and couldn't wait to urge him to do it. After all, making this thing was one of his three major goals in life.

Zhang Jian also showed an expectant look. He had become familiar with Zhao Shizhen in the past few days and had heard his master's eldest nephew describe the magical automatic water-lifting device.

"Forget it, just treat it as a hobby." Zhao Hao thought to himself. If Zhao Shizhen was not allowed to make this thing, he would not be idle. Instead of letting him drag Zhang Jian to figure out how to make a gun, it would be better for the two of them to focus on this first.

Well, I am a peace-loving man. But it was the kind brought by the twelve-pounder cannon...

He then explained to the two of them the principle of the Newcomen engine based on the sketch.

"This one below is a boiler, connected to the cylinder above. There is a piston on the cylinder, and the piston is connected to the movable lever above... When the boiler is heated, the steam in the cylinder expands, and the piston is pushed up... When water is sprayed into the cylinder, the steam condenses, and the atmospheric pressure pushes the piston down... In this way, the cylinder is constantly inflated and condensed, and the piston drives the lever to move up and down continuously, pumping out the water in the mine..."

Zhao Hao speaks very logically, but no one can tell that he is helpless when it comes to doing things.

The two listened very attentively. While Zhao Shizhen was drawing the sketch, he asked Zhao Hao about the details of each part.

"Yes, there is an air inlet valve here, and this is the water injection valve..."

With Zhao Hao's constant corrections, the sketches drawn by Zhao Shizhen became more and more realistic.

Finally, after the seventh draft was completed, the drawings drawn by Zhao Shizhen were almost identical to the Newcomen engine that Zhao Hao had seen in the book.

Zhao Hao slammed the table and said, "This is it!"

I didn't praise him as a genius this time...

After all, with him around, it's not difficult to draw the blueprint. The hard part is whether you can build this thing according to the blueprint. After building it, it has to work as expected, which is really awesome.

Let's save that sentence for later.

Zhao Shizhen, however, had already ignited a strong fighting spirit. Through discussion with his uncle, he had already understood the principle of this "automatic water pump".

He couldn't wait to try out this magical device that could make the lever move back and forth by boiling water.

Although Zhang Jian hardly said a word, his eyes were flashing with excitement.

His understanding of mechanical devices was much better than Zhao Shizhen, who focused on weapons. He could already vaguely imagine how much change this device would bring to the world if it could become a reality...

Compared with such a great thing, what does it matter if you can never pass the imperial examination in your entire life?

~~

After the two geniuses excitedly left with the drawings in their hands, Zhao Hao glanced at his father who was still tossing and turning on the kang making pancakes.

"Father, did I disturb you?" Zhao Hao couldn't help but feel a little strange.

Mr. Zhao's sleep quality is excellent. Usually, as soon as his head touches the pillow, he will start snoring within ten breaths, and no matter how loudly Zhao Hao and the others talk, they can't wake him up.

"No." Zhao Shouzheng groaned, turned over again, and faced the wall.

'It seems that you have nothing to tell me.'

Zhao Hao blew out the lights after seeing this. He was exhausted from the night and didn't have the energy to care about his father's emotional problems.

'Could it be because you won't be able to see your mother for a month and you can't bear to leave...' Before going to sleep, a ridiculous thought came to Zhao Hao's mind.

He couldn't help but think to himself, if mother knew that it was my idea to go into seclusion, she would probably blame me.

Then Zhao Hao fell into a deep sleep.

Well, he takes his father's sleeping habit.

~~

At dawn, Zhao Hao was awakened by the sound of rummaging. He thought his house was robbed again.

Just when I was about to shout at the top of my lungs, I realized it was my dad rummaging through boxes and cupboards looking for clothes.

I saw him spread out more than a dozen robes of different colors, textures and styles on half of the kang.

Zhao Hao knew what his father was going to do.

The beauty has a date. Oh no, she's going to date her mother...

Otherwise, Mr. Zhao would not choose his own clothes. He would just wear whatever Fang Wen prepared for him.

'The old love rekindled, and it really came back quickly.'

Zhao Hao couldn't help but feel secretly happy.

He was happy to see this. After all, his mother was his strongest supporter, so of course he had to be conscious of "taking his mother's likes and dislikes as his own".

"It's a pity that mother is too embarrassed to ask me, otherwise I would have helped her deal with Mr. Zhao eight or ten times..." Zhao Hao sighed secretly, feeling guilty for not being able to help his mother more.

"Maybe I just want to find the feeling of first love..."

Zhao Hao comforted himself with these words, then turned over and continued to sleep so as not to embarrass his father.

~~

When he woke up, it was already noon and his father was nowhere to be seen.

Hearing the noise from the inner room, Zhang Jian and Yu Shensi, who had been waiting outside, hurried in carrying washbasins, toothbrushes, combs, cotton towels and other items.

Apart from the fact that his movements were still a little less skillful, his hands and feet were not much slower than the eunuchs in the Qianqing Palace.

While Zhao Hao was brushing his teeth, he listened to Yu Shensi's report:

"Master said that he will accompany Her Royal Highness the Princess to visit the refugees at Baiyun Temple today, and he will probably be back late. So Master doesn't need to wait for him during the festival."

"What festival are we celebrating?" Zhao Hao was stunned.

"It's the Lantern Festival!" Li Mingyue's voice, as clear as a yellow oriole, rang out from the outer room. "Brother, let's go to the temple fair!"

"Oh, the Lantern Festival."

Zhao Hao suddenly realized that it was no wonder that the two elders had gone to celebrate Valentine's Day...

He was still young, so he didn't dare to think further.

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