Zhang Yang looked at the drawings and immediately found several problems, "Your drawings are not right, first of all, the trachea is poured in several sections, the air tightness must be poor, and the straight pipeline has great limitations." ”

"Please also tell my brother-in-law in detail."

Zhang Yang picked up a branch on the ground and continued to draw, a picture in front of him.

Li Tai looked at the exhaust pipes folded into rows, and asked curiously: "Does it have to be like this?" ”

"Increasing the length within a certain volume is the best way, and it is also in order to better compress the steam, otherwise where is the pressure difference? How much thrust can be generated just by blowing it out? ”

Li Tai was silent, quietly looking at the picture drawn with branches on the ground.

Zhang Yang frowned and looked at him, "Could it be that His Royal Highness King Wei hasn't thought about this issue at all?" ”

"I'll go back and reschedule."

Before he could finish speaking, the fat man hurried out of the straw hut.

"Stop!" Zhang Yang shouted.

Li Tai, who had just walked a few steps away, hurried back and whispered, "What else does my brother-in-law have to say?" ”

Seeing that his complexion was sallow, his eyes had lost a lot of brilliance, and there was still a smell on his body.

The theory of compressing steam from a pressure cooker to drive a wind wheel is feasible, and as long as he finds some signs, he can continue to study it.

Tell the people of Chang'an City in terms of action that King Wei did not waste his time in Lishan.

But specialization is specialization, how can it be so easy to make a thing from scratch, the steam engine has not even had a shadow, it involves more physical knowledge, and there are many technical problems, which he has not yet encountered.

It is not right to forget to sleep and eat, and the body is still the most important capital.

Zhang Yang said to the guards on the side: "You take His Royal Highness King Wei down to wash it well, kill another duck, you can't boil the duck soup, let Doctor Sun prepare some medicinal materials to replenish qi, and let His Royal Highness King Wei drink it." ”

Li Tai was stunned in place, and said, "Brother-in-law, I'm not sick." ”

"I know you're not sick, look at how long it's been since you've showered."

Hearing this, Li Tai lowered his head and smelled the smell of his body, and looked disgusted again, "It's really time to wash." ”

"Recuperate for a few days, and then go to the pressure cooker when your vitality is restored."

"But ......"

"It's nothing, the casting of the steam engine is far more difficult than you think, step by step, there is not even a prototype now, don't worry."

Zhang Yang looked at the guards on the side, "I am the brother-in-law of King Wei, if you don't do it, I will let the Emperor Taishang dismiss you." ”

The guards saluted in a panic, "Well, I will never let His Royal Highness King Wei go to the blacksmith again these days." ”

In order to make Li Tai obedient, Zhang Yang had to watch these guards carry him off his clothes, throw them into the bucket of hot water, and scrub them well.

Standing outside the door, listening to Li Tai's voice scolding his guards.

Zhang Yang looked up at the sky, it was the critical stage of growing his body, and if he continued like this for a long time, his body would collapse.

Soon there were guards who brought herbs and sat in the courtyard to boil.

"Kill! Let go of this king! ”

Li Tai's scolding came from inside the room again.

When the fat man came out of the house after washing up, he was still scolding in his mouth, "This king will wash it himself, can I use you?" ”

A bowl of duck soup with a boiled duck on the table, Li Tai devoured it.

The food was very delicious, and several guards wiped their tears, "His Royal Highness King Wei has not eaten such a good meal for a long time. ”

"yes, they've lost weight."

The guards around Li Tai are all loyal people, and they are also Li Shimin's eyes, but these people are really thinking about Li Tai.

Zhang Yang returned to Lishan Mountain and continued to raise land in his greenhouse.

The next day, news came from Chang'an City, and after Songtsen Gampo saw Li Shimin, he allowed him, the Tubo Zampu, to be a guest in Chang'an City.

This matter is also expected, Li Shimin will of course hope that Songtsen Gampo will stay in Chang'an City, such a person cannot live in Tubo for a long time, and it is best to trap him in Chang'an City.

Chang'an City sent another piece of news, Li Shimin sent several teams of soldiers and horses to the Qinghe area, for what?

Most of it is for the sake of the family.

The emperor is going to take the family, the imperial examination of the Tang Dynasty is still the same, and the family must fight.

In the past six months, there have been many people who have been wandering among the nobles in the court, hoping that Tian Khan can open his face, especially those children of the family who have been arrested and imprisoned and have not been disposed of so far.

This heavenly khan knew very well in his heart that the living were more useful than the dead.

Several of the children of those families are the only sons of their clan, and Li Shimin can naturally see where the stakes lie.

There were so many civil servants and strategists in the court, and the emperor had a lot of talents in his hands, and after several suggestions, a huge net was laid in front of the family.

The arrogant Heavenly Khan began his clean-up plan.

helped Li Shimin open the opening of Luoyang, and Lishan also got what he wanted.

It's enough to get to this point.

The next thing is that Lishan is not good to get involved too much.

It is not bad to withdraw from Luoyang, and let the emperor rush to the front and fight with the family.

It's like Tubo for the Foreign Affairs Academy, which runs through his short six-year career as an official in Chang'an.

The dispute between the family in the Central Plains and the Tang Dynasty also ran through Li Shimin's half-life career as an emperor.

And now there is an intensifying posture.

Zhang Yang sat cross-legged by the Huaqing Pond, with the current casting level of Lishan, there are still several problems in making a steam engine, and it is not an overnight thing to overcome this technical problem.

It's not something that Li Tai can solve by staying up for a few days and nights.

The crank connecting rod mechanism, spool valve, and gas distribution structure are all in the design stage, and the brain has a picture, but it is another thing to make it.

He lived his own days of retreat on the mountain.

Xiao Wu and Xiao Hui tidied up the master's study, and they stacked all the drawings, and then tied the thick stack of drawings with thick hemp rope and put them in the teacher's library.

Since the opening of this new home, there have been more and more books and drawings in the library.

In particular, all kinds of drawings are displayed in stacks, and it is not known what the drawings are used for.

It's just that I heard the teacher say that these drawings are waste paper, and they are left at random.

Xiao Wu glanced out of the window of the library pavilion, "Master has locked himself in the laboratory again. ”

Xu Hui also raised her eyes to see that the laboratory was the mysterious existence of this new home, and it was usually locked up, and even the teacher had never set foot on it, "And when the master came out of the laboratory, there was always a very pungent smell on his body." ”

"What exactly does Master do in the lab?" Xiao Wu was very curious, and kept staring at the closed door of the laboratory.

"The exam is almost over, so let's quickly pack up and help the teacher." Xu Hui pulled the corner of Xiao Wu's clothes.

Retracting his gaze, Xiao Wu cleaned up the library first.

In the laboratory, Zhang Yang ignited the gunpowder in the iron pipe, fixed it and ignited it.

Watch the smoke ignite and put a pebble inside.

There was an explosion, and the iron pipe was blown up.

Zhang Yang stepped forward to check the situation, and the inside of the thin iron pipe had been burned black, and the stones were not far away.

Noting the results of this experiment, Zhang Yang adjusted the dosage and replaced it with a wider iron pipe.

At the edge of Huaqing Pond, the waterwheel is still rotating, and the aunt is teaching Xiao Qingqing to adapt to the water and helping her to swim in the water.

The sun shines on this small world, which is very warm.

Li Yue is invigilating the exam, which is the rule of the Lishan school, and there is an exam every three months to test the children's learning results.

Finally, the door of the laboratory opened, Zhang Yang walked out slowly, took off his coat and jumped into the pool to wash off the smell of gunpowder on his body and hair.

The daughter is getting acquainted with the water, although Xiao Qingqing is still very resistant to the cold pool water.

I was still very scared, but when I saw my father swimming over, Xiao Qingqing swam to his side and said aggrievedly: "Dad, I don't want to swim." ”

Zhang Yang picked her up and put her on the shore, "After you are familiar with the water, you will not be afraid of the water." ”

Xiao Qingqing put his hands on his back aggrievedly, and then turned his head and snorted coldly.

The county marquis and the princess raise children differently from other families, this child must be familiar with water from an early age, and learn to hold a pen and write at such a young age.

Although she is a slow learner, she starts early than other children.

The aunt who has always brought her knows that she is actually very smart and talented.

It just looks like an ordinary child.

The children's exams were finally over, and Xiao Wu and Xu Hui collected the test papers one by one and sorted them out.

Li Zhi put down the pen in his hand, he was very satisfied with his answer, he saw his brother-in-law swimming in Huaqing Pond, and shouted loudly: "Brother-in-law, I want to swim too." ”

This is the child, who sees the adults swimming happily, and he wants to swim too.

Before the palace maid who was taking care of him could speak, Li Zhi had already taken off his boots and coat and jumped into the pool.

He swam happily, Zhang Yang frowned at him, "In the future, His Royal Highness King Jin must prepare for swimming exercises." ”

Li Zhi raised his head from the water and grinned, "What did my brother-in-law say about preparing for exercise?" ”

"It's just moving your muscles and bones."

After a while, the bear on the side also entered the water and swam with Li Tai.

This bear is very watery, and Li Tai is not as fast as it swims.

It doesn't look good to swim, but it moves freely in the water, and if it is kept in Qujiang Pond, the fish in Qujiang Pond may be caught by it.

If the children are allowed to hold a swimming competition, maybe the daughter-in-law will be able to accept swimming.

In the cognition of the ancients, swimming is bathing, not saying that swimming can also be fitness.

Walking ashore with Li Zhi, Zhang Yang asked, "How does His Royal Highness the King of Jin feel about swimming?" ”

Li Zhi looked at the bear who was shaking the hair on his body on the shore, "I can't beat it now, and I will definitely win in the future." ”

The bear raised his proud head and didn't take the kid in front of him in his eyes.

Xu Hui and Xiao Wu, as well as Li Yue, began to review the test papers for the children.

Li Lizhen has also become a little teacher for the children.

Li Zhi's grades are unexpectedly good, this kid has a good talent in mathematics and physics, a horse racing to calculate the time difference between the front and back of the end of the road, using the method of analogy to calculate it for him, the answer is very good.

After this exam, the children's learning tasks have come to an end.

When he is idle, Zhang Yang takes the children to work in the fields, which is the most leisurely time in the village.

The villagers also don't have much heavy labor.

Two more men and women, who had reached the age of twenty, had a marriage in the village.

Marriage always brings joy.

The autumn rain in West China stopped after a few days, and today Songtsen Gampo is here again.

Zhang Yang asked the children to build a small family model on the sand table by themselves, and came to the village entrance alone to meet Songtsen Gampo.

After seeing Tian Khan, Tubo Zampu, who lived in Chang'an City, could still go out of the city to play, which was unusual.

At the entrance of the village, Zhang Yang looked, "Is Zampu living in Chang'an City okay these days?" ”

Songtsen Gampo was dressed in Tang clothes and sat on a stone, "The court takes good care of it, and there is no need for the county marquis to worry." ”

Zhang Yang and Songtsen Gampo were of the same age, and the two stood together, this county marquis was dressed simply and plainly, like a country man.

On the other hand, Songtsen Gampo is dressed in a decent manner, and his hair is wrapped in a folded scarf, quite like an authentic Tang person.

"I'm surprised that they would let Zampu out of town?"

Songtsen Gampo gestured to a group of officers and soldiers on the side, "Not only can you come out, but you can also hunt and play, and even have someone to escort you." ”

It was somewhat ironic that he could say that.

After coming to Chang'an City, he was monitored by Tian Khan.

Songtsen Gampo said with a smile: "Even when to go to the toilet, Tian Khan knows it clearly. ”

Zhang Yang sighed: "I thought that Tian Khan would put you under house arrest, but I was afraid that people would keep watching." ”

He smiled undeniably.

Just lock people up, even if you don't leave Chang'an City, you can not restrict people's freedom and monitor them all the time.

Every move has to be reported, and the Khan is somewhat perverted this day.

However, there have always been Tibetan eyeliners in Chang'an, and these eyeliners are staring at the movements of Chang'an City, but whenever there is a situation in Tubo, this Zampu will receive news.

Even what he encountered in the court, this Zampu is also clear.

Although it is not a confidential matter, it is known to the Tibetan people in the West, which makes people feel a little uncomfortable.

Songtsen Gampo opened the water bladder and took a sip of wine, "You asked for alcohol before, and this time I will return you." ”

Zhang Yang waved his hand and said: "Drinking with Zampu was already broken, and now I don't want to drink anymore." ”

Holding the water bladder in one hand, which made him a little stunned, he slowly withdrew his hand, and Songtsen Gampo plugged the wooden plug of the water bladder.

"It seems that you and I still can't be friends, you are a Tang person, you have always been, you are right to deal with Tubo from the position of Tian Khan, just like you said, I told Tian Khan everything the Foreign Affairs Yuan did in Tubo, but Tian Khan did not punish you in any way, but only ordered Xu Jingzong to act reined, and reprimanded him and Zhang Daxiang."

It's autumn in Guanzhong, but it's still hot and uneasy at noon, Songtsan Gampo lowered his head, "You are a courtier of the Tang Dynasty, I am Zampu of Tubo, and we can only be opponents if you think about it." ”

He was very disappointed, and what was lost was that Zhang Yang was an important minister of the Heavenly Khan.

Songtsen Gampo is different from the previous Tibetan Zampu, he is a rare person who advocates wisdom and likes to read books from the Central Plains.