"This ......" Seeing that the other party looked embarrassed, Li Tai said entangledly: "This king likes tea eggs." ”

"Then go back to the queen and send someone to inquire." Waiting for everyone to leave, Li Tai sat in his yard, there was already steam in the pressure cooker, and as the steam erupted from the air port at the top, the small wheel above began to turn, and the speed of rotation was quite fast.

Observing the force of steam, Li Zhi came with a basket of peaches,

"This was all sent by my brother-in-law, saying that there are many on Lishan Mountain, and I can't finish eating." Li Tai picked up one of the peaches in the basket, took a bite of the juice and splashed, and looked at the rotating wheel above the pressure cooker's vent.

Seeing that the imperial brother was so quiet, Li Zhi took a small bench and sat down, observing the air vent on the pressure cooker.

"Understand?" Li Tai asked curiously. Li Zhi, who is only ten years old, is usually honest, obedient and sensible, and he often has some whimsical ideas.

Unlike others, Li Zhi's brother-in-law has often given him questions since he was a child, which also causes his way of thinking about things to be very different from other peers.

Seeing that he stretched out his hand to touch the steam, Li Tai hurriedly stopped,

"Do you know how hot it is?" Li Zhi withdrew his hand and pondered for a moment, and said, "Brother Huang wants to use the thrust of this steam to push the wheels?" ”

"That's what I thought." The young slave is also a disciple of his brother-in-law, and he has nothing to hide from him, and he can say a word or two if some outsiders can't understand it.

As for who to marry, it is not a big deal for Li Tai, and it is all up to his father and mother to decide later.

Li Zhi frowned and thought,

"Don't you think it's strange for the imperial brother?"

"What's so strange?" Li Zhi looked at the pressure cooker,

"The thrust of this kind of steam is always limited, even if the imperial brother builds a pressure cooker ten times larger, the steam thrust obtained is the same, and my brother-in-law said that the air pressure is the same as the weight, and it is a constant in the world." Hearing what the young slave said, Li Tai's mind suddenly opened, even if he increased the volume of the pressure cooker regardless of the cost, the steam thrust obtained was unchanged, and the internal steam force was limited, and it had nothing to do with the volume.

Looking at the young slave in surprise, Li Tai said in surprise: "How did you come up with it?" Li Zhi scratched the back of his head and smiled honestly: "It's all taught by my brother-in-law, the relationship between water pressure and air pressure is the same, how big the water pressure is has nothing to do with its area, but with depth, and the size of air pressure has nothing to do with volume." While speaking, Li Zhi said: "I used to get some insights from looking at the water valve made by Master Yan, maybe this is what my brother-in-law said about applying what I have learned." "I usually understand these knowledge with Zhang Yang, but I am not as transparent as a child.

The younger siblings have been learning from their brother-in-law and the royal sister since they were young, and Li Tai realizes that there is a very serious problem, the way the younger siblings see things has changed, and this change will affect them for a long time.

Li Tai held his forehead in pain,

"How terrible is the child taught by my brother-in-law."

"Huh? Brother Huang, what's wrong? Hearing his words, Li Tai retracted his mind again,

"It's nothing, it's just a feeling."

"Well, the royal brother doesn't have to have too many emotions, in fact, the younger brother has a way to crack it." Li Tai lifted his spirits and watched him draw on the ground.

"Brother Huang, and look at the water pressure is sometimes the same as the air pressure, which is the reason why the army will go to Tubo to feel unwell, because we are adapted to the air pressure and environment of the Central Plains, which is like the reason why fish in deep water rarely go to shallow waters." Li Zhi was talking while drawing a picture on the ground,

"It's like water pressure, increasing its depth increases its pressure." The courtyard was very quiet, and three or two guards stood outside the courtyard, guarding His Royal Highness the King of Wei and His Royal Highness the King of Jin.

Occasionally, some villagers pass by, they don't stay too long, Li Tai has presided over the construction of Lishan for so long, and the villagers here have great respect for Li Tai.

"Putting a pipe outside the pressure cooker, this thin pipe is equivalent to increasing the depth, so it artificially increases the air pressure difference, and if we need a larger rapid, we need to narrow the river." As an imperial brother, he still has to be instructed by his younger brother, this kind of thing is somewhat embarrassing, but the slave's narration is indeed very reasonable, Li Tai feels that he is about to touch the trick of steam, and a new door is opening.

At this moment, the gap in this door can already be seen, and a wider world must be seen behind the gap, Li Tai clenched his fist with one hand, and his heart was excited.

"The steam is accumulating in the furnace, driving them into a thin pipe, so that you are like water flowing from a wide channel into a narrow ditch, and the pressure inside is greater, so that the force is greater when it comes out of the pipe."

"And after that?" Li Tai continued to ask. Li Zhi frowned, scratching the back of his head,

"My brother doesn't understand what to do next." However, Li Tai's harvest is still very large, he looked at the picture drawn on the ground, a plan was slowly born in his heart, from the practice again and again, we can know that this method is feasible, and the truth of my brother-in-law can also be used.

"Go back and ask your brother-in-law, and my brother will go back first." Li Tai still looked at the picture on the ground, and said, "Will my brother-in-law still give you a question now" Li Zhi shook his head,

"The magnet topic given by my brother-in-law last year hasn't been made yet, how can you give me another question, Master Yan said that the casting of magnets is very difficult, and I don't know how it is now." After speaking, Li Zhi left.

Li Tai drew the picture on the ground, and the young slave just said a way of thinking and method, and he had to refine the idea and make a few more attempts.

In order to survive the scorching heat, Zhang Yang made a waterwheel by the Huaqing Pond, the eaves of the new home were lengthened, and the waterwheel brought water to the roof to flow down, so that the temperature in the house could drop a lot, and the water flow would isolate a lot of heat.

The cub and the other five cubs also stayed under the eaves and refused to go anywhere else. The children were taking a nap, and Zhang Yang sat at the table, listening to the squeak of the waterwheel, and finally finished reviewing the last piece.

The court and the central government had accumulated half a year's worth of money to call the concert, and the couple only took two months to approve it.

Among them are the payment of the arrears, the distribution of money and salaries, and the rewards to be given by the ministries on weekdays.

Zhang Yang looked at the current total credit of 65,000 guan and the surplus of 5,300 guan, plus the 20,000 guan lent by Lishan this time, and still owed 70,000 guan.

The days of the court are tight, but they can barely get by. After sorting out the music in front of him, Li Yue handed it to his aunt,

"Trouble your aunt to send these recitals to His Majesty's Little Palace." Aunt Wang carried the burden in her hand,

"The county marquis can do this, and there will definitely be a day of glory and wealth in the future."

"Naturally, I have done so many good things in Datang." Li Yue smiled bitterly,

"It's just that the wealth that the husband wants is different from others."

"The wealth I want is very simple, count the money until your hands cramp." Zhang Yang took a sip of tea, thinking about the current assets of the court, and the situation has not yet reached the point of bankruptcy, as long as the emperor works hard, the surplus of the court will always turn positive.

The couple's ability is very strong, Aunt Yang is watching from the side, the couple is very economical in the use of money, every penny and money are used in key places, if it is replaced by someone else, this large amount of lake accounts may not take how long it will take to sort out.

The couple can squeeze some flowers out of their teeth to cope with the deficit in the court. The emperor is not a person who can settle accounts, and there will be a danger of extravagance and waste, but fortunately, our majesty knows frugality.

When the cost is spent, it is time to recover the cost and profit. Zhang Yang opened a map, which was a map of the Western Regions, and finally his eyes fell on the Persian territory.

Just thinking about it, Li Zhi came back in a hurry, he washed his face with the water flowing from the eaves, and drank a sip of cold water, which relieved him from the scorching heat.

In the summer of this year, the weather was so hot that even Li Chengqian, who was in the East Palace, came to Lishan, and the people in Chang'an City fled and went to the suburbs or the villages in the mountains and forests to escape the heat.

Because of the topography, the current Chang'an City is like a huge steamer, and there will only be some pedestrians in the evening and morning.

The scorching heat of dog days also made Li Shimin dismiss the idea of returning to Chang'an City, and he needed to stay in Lishan for a while.

After the end of this scorching summer, he planned to return to Chang'an City, and the emperor also continued his days of eating and drinking in Lishan.

Anyway, it was Li Tai's money that was spent, Li Tai was already a member of the village, he didn't matter, the emperor was different, and the emperor needed money to come to escape the summer.

And the emperor's summer vacation these days are not happy, first of all, the courtiers impeached the Ministry of Rites, and after punishing Yulu, and then wait for Songtsen Gampo to come to Chang'an City to confront and then make plans.

Before the owner arrived, he listened to the impeachment of the courtiers to deal with Zhang Yang, which was obviously inappropriate, and Li Shimin was still very clear in his heart.

I only sigh that other people's courtiers are submissive, but the courtiers in the hands of our Majesty will strike hard when something is wrong.

Whenever the emperor did something wrong, he would be criticized by his courtiers and draw inferences from others.

After a while, Li Zhi came with a picture,

"Brother-in-law, this is the picture I drew." Walking out of the state of mind of leisurely recuperation, Zhang Yang took the drawings and looked at them carefully,

"Is this a pressure cooker?"

"Well, I want to help Brother Huang sort out some troubles."

"Hmm." Zhang Yang nodded and looked,

"What's the thickness of your pipe?" Li Zhi looked at the drawings and scratched his head, not knowing how to answer for a while.

Zhang Yang said again: "Look at the length of the steam pipe, if it is more than ten zhang, will it take up too much volume, and how much water is needed to produce enough steam...... "He asked him a lot of questions, and his brother-in-law's words were a little heavy, Li Zhi pouted aggrievedly, and lowered his head as if he was counting.

Zhang Yang patted him on the shoulder and said: "Don't be in a hurry, that fat man ......" The words paused, and then changed his words: "Actually, your imperial brother has his own plans, you don't have to rush to help him, you first master the skills you want to learn." ”

"Well, remember my brother-in-law's teachings." In the sweltering heat, crops would die of drought if they were not irrigated, and in the evening, the villagers opened the canals to release water.

After the scorching heat of the afternoon, the evening can be much more refreshing, and the village is rejuvenated. The blacksmith's workshop was also temporarily suspended, and the whole village was spending the summer in peace, waiting for the heat to pass before working.

Today, Li Shimin invited Kong Yingda to come to Lishan, and invited Kong Yingda to escape the summer, also to teach the children.

Kong Yingda was talking about the Book of Changes, and a pergola was set up outside the Xiaoxing Palace, and Li Chengqian and Li Shimin were also listening.

Li Shimin was looking at the chapter in his hand, this is a brief statute of the prince's affairs in the court these days, and it is also what has happened in the court these days.

Now the crown princess also gave birth to a child for Chengqian, and the queen was worried about the child, so she asked Li Chengqian to come back from the East Palace with his wife and children.

In the pergola, Kong Yingda talked about benevolence, righteousness, etiquette and filial piety. Princess Dongyang, who is usually sensible, well-behaved and quiet, listened to Kong Yingda's story, Gao Yang couldn't listen to it, stood up and said: "Old master, students think that benevolence, righteousness, courtesy, and filial piety are too restrictive. ”

"Cough cough cough ......" Li Shimin, who was sitting outside the pergola, coughed violently, saying that there is no taboo in children's words, what does a child in Gaoyang know.

Li Shimin collected his mind and continued to read the recital. Kong Yingda said: "Respect for filial piety is the first, and the quasi-benevolent and righteous people of the past generations can still convince others." Li Zhi also stood up,

"The students thought that what the old master said was inappropriate." Kong Yingda's brows jumped, and he stroked his beard and watched the princes and princesses stand up, I am afraid that this lesson will not be able to be taken.

Li Zhi bowed and said: "According to what the old master said, it is not only filial piety first, but the student heard from his brother-in-law that life in the world should have a firm obsession in the heart, and be honest and trustworthy, fair, harmonious, and respect the law." Kong Yingda wanted to speak and stopped, and felt that there was nothing wrong with this, so he couldn't help asking,

"Who taught you all this knowledge?" Li Zhi also said: "There should be a difference between the individual and the collective, it is wrong to preserve the principles of heaven and destroy people's desires, and it is advocated to practice fraternity and justice." Kong Yingda gasped when she heard this, this lesson was impossible.

What the princes and princesses said seemed to be good, but they always felt that something was wrong, as if they crushed the concepts of Confucianism and Taoism, and then added something else.

Kong Yingda let the children leave first, and his old man walked in front of Li Shimin,

"Your Majesty, dare to ask who is lecturing the princes and princesses?" Li Shimin was stunned and said, "Does the old master think something is wrong?" ”

"Who brought this ethos of arguing against the religion of religion?" Li Chengqian was silent, seeing that the old master Kong Yingda was very angry, Zhang Yang and Yue'er set up their own mountain gate in Lishan, and no one brought this trend.

If there is really anything wrong, it is the atmosphere brought out by the Lishan Mountain Gate, Zhang Yang has many unpredictable skills.

Who else could he be, and what the school of Lishan Mountain Gate taught was naturally Zhang Yang's own knowledge. Who knows who Zhang Yang studied under and where that old man from Qinling came from.