Zhang Yang looked at the drawing and immediately discovered several problems, "Your drawing is wrong. First of all, the air pipe is poured in several sections, and the air tightness must be poor. There are also great limitations in straight pipes."
"Brother-in-law, please elaborate."
Zhang Yang picked up a branch on the ground and continued to draw, with a picture in front of him.
Li Tai looked at the exhaust pipes folded into rows and asked curiously: "Is it necessary to be like this?"
"Increasing the length within a certain volume is the best method, and it is also to better compress the steam. Otherwise, where is the pressure difference? How much thrust can be generated by just blowing it out?"
Li Tai fell silent, quietly looking at the picture drawn with branches on the ground.
Zhang Yang frowned and looked at him, "Does it mean that His Highness the King of Wei has not considered this issue at all?"
"Let's go back and make arrangements again."
Before he finished speaking, the fat man hurried out of the hut.
"Stop!" Zhang Yang shouted.
Li Tai, who had just taken a few steps away, hurried back and whispered: "Brother-in-law, do you have any other instructions?"
His complexion was sallow, his eyes had lost a lot of energy, and he still had a smell.
It is theoretically feasible to use a pressure cooker to compress steam to drive a wind wheel. As long as he finds some clues, he can continue to study forward.
Actions told the people of Chang'an City that the King of Wei did not waste his time hanging around Lishan Mountain.
But specializing in research is a matter of specialization. How can it be so easy to create something from scratch? The steam engine doesn't even exist yet. It involves more knowledge of physics and there are many technical problems that he has not encountered yet.
It is wrong to forget about food and sleep. The body is still the most important asset.
Zhang Yang said to the guards on the side: "Take His Royal Highness the King of Wei down to have a good wash, and then kill a duck. If you can't stand the duck soup, ask Dr. Sun to prepare some qi-tonifying herbs for His Highness the King of Wei to drink."
Li Tai froze on the spot and said, "Brother-in-law, I'm not sick."
"I know you're not sick. Look how long it's been since you took a shower."
Hearing this, Li Tai lowered his head and smelled the smell of his own body, with a look of disgust on his face again, "It's really time to wash it off."
"Recuperate for a few days, and then delve into the pressure cooker when your energy is restored."
"But……"
"There's nothing wrong with it. Casting a steam engine is far more difficult than you think. Just do it step by step. We don't even have a prototype yet, so don't worry."
Zhang Yang looked at the guards on the side and said, "I am the brother-in-law of King Wei. If you don't comply, I will ask the Supreme Emperor to send you away."
The guard panicked and saluted, "Well, His Highness King Wei will never be allowed to go to the blacksmith shop again these days."
In order to make Li Tai obedient, Zhang Yang had to watch these guards take off his clothes, throw them into a bucket of hot water, and give him a good scrub.
Standing outside the door, listening to Li Tai scolding his guards.
Zhang Yang looked up at the sky, which was the key stage of body growth. If he continued like this for a long time, his body would collapse.
Soon the guards brought herbs and sat in the yard to cook them.
"Shacai! Let me go!"
Li Tai's scolding came from inside the room again.
When the fat man was clean and walked out of the house, he was still cursing, "I know how to wash myself, do you need me?"
A bowl of duck soup and a cooked duck were placed on the table, and Li Tai devoured them.
The meal was delicious, and several of the guards wiped their tears and said, "His Royal Highness, King Wei, has not had such a good meal for a long time."
"Yes, everyone has lost weight."
The guards around Li Tai are all loyal people, and they are also Li Shimin's spies, but these people really care about Li Tai.
Zhang Yang returned to Lishan Mountain and continued to cultivate the land in his greenhouse.
The next day, news came from Chang'an City. After Songtsen Gampo met Li Shimin, he allowed him, the Tubo Zampo, to visit Chang'an City.
This incident was also expected. Li Shimin would certainly hope that Songtsen Gampo would stay in Chang'an City. Such a person could not live in Tubo for a long time, so it would be best to trap him in Chang'an City.
Another news came from Chang'an City, and Li Shimin sent several more troops to the Qinghe area. For what purpose?
Mostly for the sake of the aristocratic family.
The emperor wants to take action on the aristocratic family. The Imperial Examination of the Tang Dynasty remains the same, and the aristocratic family must fight against it.
In the past six months, there have been many nobles and nobles wandering around the court. I hope Tian Khan can be more lenient, especially those children of aristocratic families who have been imprisoned and have not been dealt with so far.
This Tian Khan knew very well that the living were more useful than the dead.
Several of the children of those aristocratic families were the only direct sons of their clan, so Li Shimin could naturally see the stakes.
There were so many civil servants and counselors in the court, and the emperor had a lot of talents. After many suggestions, a huge net was spread in front of the family.
The arrogant Tian Khan began his cleaning plan.
Helped Li Shimin open the door to Luoyang, and Lishan also got what he wanted.
It's enough to have come this far.
Lishan couldn't get too involved in what happened next.
Regarding the matter of withdrawing from Luoyang, it would be good for the emperor to rush to the front and fight with the aristocratic family.
Just like Tubo to the Foreign Affairs Academy, it lasted throughout his short six-year official career in Chang'an.
The dispute between the aristocratic families in the Central Plains and the Tang Dynasty also lasted throughout Li Shimin's half-life emperor career.
And now it's getting more and more intense.
Zhang Yang sat cross-legged by the Huaqing Pool. With Lishan's current casting level, there were still several problems in making a steam engine. Overcoming this technical problem was not something that could be accomplished overnight.
It's not something Li Tai can solve by staying up for a few days and nights.
The crank connecting rod mechanism, slide valve, and valve structure are all in the design stage. You have a picture in your head, but making it happen is another matter.
I once again lived my own retreat in the mountains.
Xiao Wu and Xiao Hui organized the master's study. They folded up some drawings, tied the thick stack of drawings with thick hemp rope, and put them in the teacher's library.
Since the completion 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 piles, and there is no idea what the purpose of these drawings is.
I just heard from the teacher that these drawings were waste paper, so I just put them around casually.
Xiao Wu glanced out of the window of the library and said, "Master locked himself in the laboratory again."
Xu Hui also looked up and saw that the laboratory was a mysterious existence in this new home. It was always locked and not even the teacher had set foot in it. "And when Master comes out of the laboratory, there is always a very pungent smell on his body." smell."
"What is Master doing in the laboratory?" Xiao Wu was very curious and kept staring at the closed door of the laboratory.
"The exam is almost over, let's pack up quickly and go help the teacher." Xu Hui pulled Xiao Wu's clothes.
After looking away, Xiao Wu started to clean up the library.
In the laboratory, Zhang Yang ignited the gunpowder in the iron pipe, fixed it and then ignited it.
Watching the smoke ignite, put a small stone inside.
There was an explosion and the iron pipe was blown up.
Zhang Yang stepped forward to check the situation. The inside of the thin iron pipe had been burnt black, and the stones were not far apart.
Taking note of the results of this experiment, Zhang Yang adjusted the dosage and replaced it with a wider iron pipe.
Beside Huaqing Pool, the waterwheel is still turning. Auntie is teaching Xiao Qingqing to adapt to the water and supporting her to swim in the water.
The sun shines on this small world, which is very warm.
Li Yue is invigilating the exam. This is the rule of the Lishan School. An exam must be conducted 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 away the smell of gunpowder smoke from his body and hair.
My daughter is getting familiar with the properties of water, although Xiao Qingqing still resists the cold water.
She was still very scared at first, but when she saw her father swimming over, Xiao Qingqing swam to him and said aggrievedly: "Dad, I don't want to swim anymore."
Zhang Yang picked her up and put her on the shore. "After you become familiar with the water, you won't be afraid of it anymore."
Xiao Qingqing put her hands on her back in grievance, then turned her head and snorted coldly.
The county prince and the princess raising a child are different from other families. The child needs to be familiar with the properties of water since he was a child, and he needs to learn to hold a pen and write at such a young age.
Although she learns slowly, she starts early compared to other children.
The aunt who has been taking her with her knows that she is actually very smart and talented.
They just look like ordinary children.
The children's exams were finally over. Xiao Wu and Xu Hui collected the test papers and organized them.
Li Zhi put down the pen in his hand. He was very satisfied with his answer. When he saw his brother-in-law swimming in Huaqing Pool, he shouted: "Brother-in-law, I want to swim too."
This is a child. When he sees adults swimming happily, he wants to swim too.
Before the maid on the side could speak, Li Zhi had already taken off his boots and coat and jumped into the pool.
He swam happily, Zhang Yang frowned and looked at him, "From now on, Prince Jin must do some preparatory exercises when he comes to swim."
Li Zhi raised his head from the water and grinned, "What is the preparatory exercise that brother-in-law said?"
"Just move your muscles and muscles."
Not long after, the little bear beside him also entered the water and swam with Li Tai.
This bear is very good at swimming, and Li Tai can't swim as fast as it.
It looks very ugly when swimming, but it moves freely in the water. If it were kept in Qujiang Pond, it might catch all the fish in Qujiang Pond.
If we let the children hold a swimming competition, maybe my daughter-in-law will also accept swimming.
In the ancient people's perception, swimming is just like taking a bath, and there is no mention that swimming can also be used for fitness.
Walking ashore with Li Zhi, Zhang Yang asked: "How did His Highness, King Jin, feel about swimming?"
Li Zhi looked at the little bear who was shaking his hair on the shore and said, "I can't beat it now, but I will definitely win in the future."
Little Bear raised his head proudly and did not take the boy in front of him seriously.
Xu Hui, Xiao Wu, and Li Yue began to mark the test papers for the children.
Li Lizhi also became the children's little teacher.
Li Zhi's grades were surprisingly good. This child has a very good talent in mathematics. He was able to calculate the time difference between the front and rear finish points of a horse race using an analogy, and his answer was very good.
After this exam, the children's learning task has come to an end.
In his free time, Zhang Yang takes his children to work in the fields. This season is the most leisurely time in the village.
The villagers don't have much heavy work either.
There were two more men and women over the age of twenty. They held a wedding in the village.
Marriage always brings joy to people.
The autumn rain in West China stopped after a few days, and today Songtsen Gampo came again.
Zhang Yang asked the children to build a model of a small home on the sand table, and went to the entrance of the village alone to meet Songtsen Gampo.
After meeting Tian Khan, it was strange that Tubo Zanpu, who was living in Chang'an City, could still go out to play in the city.
At the entrance of the village, Zhang Yang looked at him, "How is Zanpu's stay in Chang'an City these days?"
Songtsan Gampo was dressed in Tang Dynasty clothes and sat on a stone. "The court has taken good care of him, so there is no need for the county prince to worry."
Zhang Yang and Songtsen Gampo are similar in age. They stand together. The county prince is dressed simply and plainly, looking like a country man.
On the other hand, Songtsen Gampo was well-dressed, with his bun wrapped in a folded scarf, quite like an authentic Tang Dynasty man.
"I'm surprised, they actually let Zamp leave the city?"
Songtsen Gampo gestured with his eyes to a group of officers and soldiers on the side, "Not only can you come out, you can also go hunting and have fun, and you can even be escorted."
It was somewhat ironic that he could say this.
After arriving at Chang'an City, he was monitored by Tian Khan.
Songtsen Gampo laughed and said: "Even when he goes to the toilet, Tian Khan knows exactly."
Zhang Yang clicked his tongue and said: "I thought Tian Khan would put you under house arrest, but it turns out he was afraid that people would keep watching you."
He smiled incredulously.
It's enough to lock people up, even if they don't leave Chang'an City. They don't restrict their freedom but still keep them under constant surveillance.
Every move must be reported, and Khan was somewhat abnormal that day.
However, there have always been Tibetan spies in Chang'an, and these spies are keeping an eye on what's going on in Chang'an City. Whenever there is a situation in Tibet, Zampu will receive the news.
Even the things he encountered in court were clear to Zampu.
Although it is not a secret matter, it is somewhat uncomfortable for the Tibetan people in the West to know about it.
Songtsan Gampo opened the water bag and took a sip of wine, "You drank before, but I will return it to you this time."
Zhang Yang waved his hand and said, "Drinking with Zanpu was already a breach of the rule, and I don't want to drink anymore now."
He was holding a water bag in one hand, which made him a little surprised. He slowly retracted his hand, and Songtsen Gampo plugged the cork of the water bag.
"It seems that you and I still can't be friends. You are from the Tang Dynasty, and you have always been. It is right for you to stand in the position of Tian Khan and deal with Tubo. As you said, I will do what the Foreign Affairs Council did in Tubo. Everything was informed to Tian Khan, but Tian Khan did not punish you in any way. He only ordered Xu Jingzong to restrain his behavior and scolded him and Zhang Xiangxiang."
It has entered autumn in Guanzhong, but it is still hot and uneasy at noon. Songtsan Gumbu lowered his head and said, "You are a minister of the Tang Dynasty, and I am Zanpu of Tubo. I think we can only be rivals."
He was very disappointed. What was disappointing was that Zhang Yang was an important minister of Tian Khan.
Songtsan Gampo was different from the previous Tubo Zampu. He was one of the few people who respected wisdom and liked to read books from the Central Plains.
