Just after the winter, the temperature difference between day and night in Chang'an City has been a bit big recently, and it is quite warm during the day, and the wind is cold again at night.

Li Chunfeng's half-crazy and half-demonic state also spread for a while.

In the East Palace, Li Chengqian was very puzzled when he heard the news, "Why is this Li Chunfeng crazy?" ”

The attendant of the East Palace replied: "His Royal Highness the Prince, it is said that he was like this after he met Zhang Yang. ”

"Zhang Yang ......"

Li Chengqian put down his pen, frowned and said: "Lone also thinks that this Zhang Yang is quite eccentric, and this person's temperament is a little incomprehensible. ”

The attendant stood aside and said, "Is this Zhang Yang too high in mathematics?" ”

"It is said that this Zhang Yang does have attainments in mathematics, but he is not higher than Li Chunfeng."

The squire nodded pertinently.

Li Chengqian said again: "Li Chunfeng Dao Master has been studying mathematics for half his life, whether it is a person in the court or a person in the community, no one can be higher than Li Chun Feng Dao Chief's attainments, as far as Gu knows, Li Chun Feng Dao is very close to the realm of the Great Yan Technique. ”

After finishing speaking, Li Chengqian couldn't figure it out, "How can a good person be crazy." ”

With a long sigh, Li Chengqian said: "Take some pastries from our East Palace to comfort Li Chunfeng, and say that Gu hopes he can get better as soon as possible." ”

"Whoa."

The attendant was just about to leave and said, "Your Royal Highness the Prince, the villain heard that Princess Runan has already gone to see the fiefdom. ”

Li Chengqian nodded slightly, "How is the fief?" ”

The attendant said with a puzzled face: "It's just that the fief is particularly broken. ”

Smiling bitterly, Li Chengqian looked at the sunshine outside the hall and said: "Alas, Zhang Yang and Yue'er's lives are already very hard, and their father gave them such a fief, not only did he not give them a good life, but it was not bad if he didn't drag them down." ”

Li Chengqian has also seen many princes and princesses, and he would rather ask for a dilapidated fief near Chang'an than a fief in a remote place.

Just like Li Yuanchang wants to stay in Chang'an City by all means.

Yue'er has been frail and sickly since she was a child.

The father also wanted to leave Yue'er in Chang'an City, so that she could visit from time to time, although it was said that the fief was a little barren, but it was a good thing.

At least Yue'er can stay in Chang'an City, even if she goes to the fiefdom, it is a good thing that she is not far from Chang'an City.

The harem is in the political hall, Li Tai's mood is very low, and the cake business is still known by the queen mother after all.

Li Tai told his mother about the switch between soap and cake business.

After hearing this, Empress Eldest Sun said, "Is this your idea or Zhang Yang's idea?" ”

Li Tai lowered his head and said, "It was Xu Jingzong who said that he used this excuse to get acquainted with Zhang Yang." ”

Empress Changsun remembered Xu Jingzong, who was also one of the eighteen scholars of the Qin Palace.

His Majesty was able to ascend the throne back then, and the eighteen scholars of the Qin Palace's Mansion were also the force that His Majesty relied on the most.

It's just that some of the eighteen bachelors of the Qin Wangfu back then were already in high positions, and some were also in their respective positions.

But there are still a few that haven't been used yet.

Xu Jingzong was a bachelor of the Qin Wangfu back then, and there were many talents in the Qin Wangfu at that time, and Xu Jingzong's strategy and resourcefulness were not outstanding.

Now he is just a small Korean Chinese official.

Empress Changsun said to Li Tai: "The eighteen scholars of the original Qin Palace, each with their own strengths, do you know why your father is unwilling to reuse Xu Jingzong until now?" ”

"Erchen is puzzled."

Empress Eldest Sun looked serious, "The queen mother doesn't want to talk much about the affairs of the court, my father said that Xu Jingzong is a very thoughtful person, some people think too much, Qingque, you are still young, some people you can't see through, everything must be cautious." ”

"The teachings of the queen mother, the sons and daughters should remember."

Empress Eldest Sun nodded, "Okay, you can go back too." ”

Li Tai saluted and said, "The son of the minister retires." ”

His Majesty will mention Xu Jingzong's matter, but Empress Eldest Sun doesn't care.

After Li Tai left, Li Shimin also walked into the Manna Palace, "Did you say that Qingque?" ”

Empress Eldest Sun nodded slightly, "It's a few times, Qingque, this kid is still sensible, but there is no quibble." ”

Li Shimin took off his court clothes, "This Zhang Yang, this kid is also a wonderful person, he is good at mathematics, Doctor Sun said that he still understands medical skills, and he can still put forward some insights in political affairs, and he can also do business?" I felt more and more that this person was incredible. ”

There is such a son-in-law, Li Shimin, who is a little distressed and a little unexpected.

What Li Shimin really wants now is this kind of talent with no background and simple intersection.

If Zhang Yang can wash away the lead flower, it is also a talent that can be created.

Li Shimin sat down and relaxed his back, "I live a miserable and poor life in the palace, and a few of them are good, and they can still earn money outside." ”

Li Zhi, who was only two years old, was still taking a nap on the bed, and Empress Eldest Sun looked at it dotingly.

Li Shimin's words seemed to be jealous, and there was a posture of hating iron but not steel.

After receiving the hot tea brought by the palace maid, Li Shimin said: "I don't know how much this kid Zhang Yang has to do. ”

Empress Changsun said: "At the beginning, Qingque was inspired by Zhang Yang to collect a lot of miscellaneous books. ”

"There are many strange people in this world, I hope Zhang Yang can cherish his talent, and there are many people who are talented when they are young, but they have no progress when they are old."

Chang'an City, under the warm sun.

Zhang Yang was playing cards with his daughter-in-law at home, "There is news from the fiefdom that the construction of the village has begun. ”

Li Yue played his cards and nodded, "Hmm." ”

The two were playing cards, and Aunt Wang came over and said, "Your Royal Highness Princess, Li Chunfeng is here." ”

Zhang Yang looked up. Li Chunfeng's hair was a little messy, and he stood at the door with blank eyes.

He took out a piece of cloth and said, "I can't count it, I can't count it." ”

It's like a man who is dying of thirst in the desert, and he will fall headlong at any moment.

Zhang Yang helped him sit down and said, "It's been a long time." ”

Li Chunfeng's fingers trembled and pointed to the equation on the cloth and said, "It's that the old man's skills are not as good as others." ”

He hung his head weakly, as if all his life's Dao heart had been shattered.

Zhang Yang said: "Actually, I think as long as we know the algorithm, why do we have to know the answer? ”

Li Chunfeng looked at Zhang Yang in a daze.

Zhang Yang poured him a cup of hot tea, "Dao Chief, take a sip of tea." ”

Li Chunfeng's eyes were much better after taking a sip of hot tea, "It's really a trick on the world, the old man almost forgot his humble heart in front of mathematics, or your topic reminded the old man of this humility again." ”

As if the shackles on his body had been opened, Li Chunfeng slowly stood up after drinking tea, "If people don't have that humility in the face of knowledge, sooner or later they will be lost because of their arrogance, and it was you who pulled the old man back from the lost road." ”

How can this Li Chunfeng talk to make people feel goosebumps.

Li Chunfeng held Zhang Yang's hand, "Thank you, the old man will definitely work harder to specialize in mathematics in the future." ”

"You're welcome."

Zhang Yang quickly withdrew his hand.

Li Chunfeng said again: "Your mathematical attainments are not low, we should meet more often, and we can exchange more mathematical experiences in the future." ”

"Learning together? Progress together? ”

Li Chunfeng nodded heavily, moving himself, "That's right, make progress together, learn together!" ”

Li Yue also pursed his lips and smiled, the result of no matter what is up or down, is the best.

Li Chunfeng asked again: "I don't know who taught the number of horses." ”

Zhang Yang said: "I have a lot of teachers, and as I get older, my teachers also change, in fact, in the eyes of teachers, I am not a very good student, but there are many students with better grades, after all, I am just a poor student." ”

When I think of the math class in my later life, I took the exam again and again, and now I think back on it like a nightmare.

Although the results are not bad, they are not good.

At that time, I was also called to the office every day, scratching my ears and cheeks under the gaze of the teacher.

Looking back on the days at that time, there was a harvest in the pain.

Every formula has never been forgotten in my memory.

There were two wooden planks hanging on the wall of his house, and Zhang Yang turned over one of them.

When he saw the back of the plank, Li Chunfeng was stunned for a while.

This board is painted with complex geometric diagrams, as well as dense formulas, and the entire board is written.

This is what Li Yue left when he was doing the question.

Li Chunfeng looked at the plank and said, "This is ......"

Zhang Yang said: "Li Chunfeng doesn't have to care too much about those formulas and symbols. ”

After studying mathematics for half a lifetime, Li Chunfeng can see the meaning of these geometric examples to some extent, and can roughly guess the meaning of those symbols.

It's like opening the door to a new world.

Li Chunfeng looked at the plank with fiery eyes.

Well...... It's like looking at a girl with no clothes on.

Li Chunfeng muttered to himself: "Yes, it should be calculated like this, it will be faster......

After a while, Li Chunfeng spoke: "Can you let the old man write down the calculations on this, I have already had some epiphanies, and these calculations have greatly inspired the old man's mathematical attainments. ”

Li Chunfeng is a Taoist priest who is obsessed with mathematics, and he is afraid that he will seek death and life for mathematics.

Zhang Yang said: "This plank will be given to Li Chunfeng. ”

"Good!"

Li Chunfeng nodded hurriedly, "This kindness will always be remembered by the old man, if there is anything to help in the future, the old man will definitely help." ”

After speaking, he held Zhang Yang's hand again.

How did this ancient man want to hold someone else's hand and touch it when he was excited, so awkward.

Zhang Yang withdrew his hand again, "You're welcome." ”

Taking down the wooden board hanging on the wall, Li Chunfeng left satisfied, his steps were much firmer.

Li Yue said in a low voice: "Why don't you show Li Chunfeng Dao Commander another plank." ”

The other board is a physics topic, and if Li Chunfeng is involved in geometry and mathematics, then the topic of physics is another field.

Li Yue is still learning about the conversion of mechanics.

Mathematics can be understood by Li Chunfeng.

But physics is a different story, and many of the ideas even subvert the common sense of the ancients.

Li Yue is like a blank sheet of paper, she can accept some knowledge of mechanics, and she can also slowly shape her understanding of everything in the world.

But people like Li Chunfeng have long formed an inherent notion that whether people like him can accept physics is still unclear.

Even some physical theories are subversive for him.

Zhang Yang said: "Give Li Chunfeng some leeway, don't really drive people crazy." ”

Li Yue smiled and didn't say anything more.

Many people in the palace saw Li Chunfeng returning to the Taishi Bureau with a large wooden plank, and as soon as he came back, he retreated again, saying that he should not disturb him for nearly two months.

Fortunately, in this retreat, Li Chunfeng is not crazy, at least in the eyes of everyone, he is much more normal.

Half a month after the end of the Great Dynasty Meeting, many people from the Western Regions left Chang'an City, and some envoys still stayed in Chang'an City.

Only the Turkic envoys and Tuyuhun were left, and the Tubo minister Lu Dongzan was left.

The three of them still have a lot to work out.

In the war between Tuyuhun and Tubo, as well as the last assassination, Li Shimin deliberately left Turkic envoys to deter many Turkic tribes.

Sometimes it's good to be a bad friend, and you can justifiably base your happiness on the pain of losing a friend.

Zhang Yang made a fried dumpling at home and finished breakfast with Li Yue.

Li Yue and her two aunts are sorting out some fabrics and satin, and they are also going to make new clothes for the next spring.

With some fried dumplings that he couldn't finish eating, Zhang Yang went out.

Now there are too many people in the post house, and Zhang Yang arrived at the door of the post house to know that Cheng Chumo and Li Tai had changed the location of the joint.

All the way to Qujiang Pond, it is much cleaner here.

It is said that everyone is in business together, and it is really inappropriate to divide the money in a noisy place.

In a water pavilion in Qujiang Pond, Cheng Chumo and Li Tai are sitting here.

Zhang Yang carried a small food box and handed it to Li Tai, "The fried dumplings you want to eat." ”

Li Tai opened the food box and took the dumplings and ate them, "I know that you won't embarrass me." ”

A bad friend is a friend who can still eat meat and drink wine together after a day, no matter how unhappy he was before.

Zhang Yang looked at the two and said, "I want to renovate the fiefdom recently, I don't know if the two of you are interested in buying shares." ”

After paying off his previous debts, Li Tai also had some spare money in his hands.

Li Tai said: "I heard that the fief is very barren, and I am afraid that I will lose all my money. ”

"I have the idea of turning the fiefdom into a tourist attraction, there are tourists in Lishan in spring, some people will go to Lishan to escape the heat in summer, there are beautiful autumn scenery in Lishan in autumn, and there are beautiful snow scenes in winter, what a good place."

"And there is a palace in Lishan, and His Majesty likes to go there now, which is invisibly another signboard."

Li Tai said wistfully: "But that place is very poor. ”

With a sigh, Zhang Yang said: "His Royal Highness the King of Wei has seen it shallowly, don't just look at the current fiefdom is very poor, it still has great potential." ”

"Where does the potential come from, in my opinion, the cake business has a lot of potential."

"I also plan to sell some strange foods that people have not eaten in the fiefdom, such as roast duck, yellow stewed chicken, braised duck palms, twist flowers, doughnuts ......"

"Wait a minute!" Li Tai immediately interrupted: "What is that doughnut?" Is it tasty? ”

Zhang Yang looked regretful, "It seems that His Royal Highness King Wei is unwilling to take risks, it is understandable, I am not reluctant." ”

(End of chapter)