The value of this bottle of medicine may not be worth 30,000 yuan to Li Zheng, but the value to himself is not so small, this kid is clearly the old man, Du Ruhui thought in his heart.

"In three days, send people." Li Zheng said.

"Yes." Du Ruhui nodded, almost forgetting to ask him why he didn't come to the capital, and then said: "I heard that you were kicked out of the study, the old man asked you, even if you don't want to be an official, you want to live such a mediocre life?" ”

"What's so bad."

"Don't you have ideals? Don't you want to do a good job as a man? ”

"Ideal." Li Zheng looked up to the sky and thought for a while and said, "I used to have ideals. ”

"What an ideal."

"I want to build an elevator in the Himalayas."

"Fix what?"

"You won't understand it."

"That's fine." Du Ruhui sighed, but he already had the idea of placing Li Zheng in his heart, even if he didn't want to enter the court as an official, and he couldn't let Datang lose this talent, it was better to give him a false title.

But this kid is so young, how can he be dull.

What will a child experience that makes him depressed, is it really because he was kicked out of the study?

"Anything else?" Li Zheng saw that the two had not left yet.

Li Chunfeng stepped forward and asked, "Poor Li Chunfeng." ”

Li Chunfeng? Li Zheng was a little interested, "You are Li Chunfeng who wrote a picture of pushing back with Yuan Tiangang?" ”

"You also know how to push back pictures?" Li Chunfeng was very surprised by Li Zheng's words, pushing the back picture was indeed made by himself and Yuan Tiangang, but he only showed it to Li Shimin, and there were very few people in the court who knew about pushing the back picture, how did a country child know.

"I've heard of it." Li Zheng didn't want to say it.

Li Chunfeng explained his intention again and said: "Child, the old man has seen your solution, and the question of the nine-chapter number technique was hung up by the old man, and your solution method is very wonderful." ”

It's just an algebraic operation, and you, Li Chunfeng, have never seen the advanced math problems of later generations.

While speaking, Li Chunfeng took out a booklet, "Can you tell me how you solved the problem?" As long as you tell me, this nine-chapter book will be given to you. ”

"Not interested." Li Zheng turned his head to look at the house he had repaired in the distance.

This...... Is this kid looking down on the Nine Chapters of Mathematics?

Li Chunfeng was stunned for a long time and couldn't speak.

"I don't want nine chapters of arithmetic, if you can arrange an official for me, I will tell you how I solve the problem."

"Good! Poor Dao promised you, just please don't use those strange words to solve the problem" Li Chunfeng's eyes were full of heat.

For Li Chunfeng, Li Zheng's method of solving problems is like opening the door to a new world.

Li Zheng took the nine-chapter numeracy book in Li Chunfeng's hand, and began to calculate the problems with the charcoal he made, one question after another, and an hour later, Li Zheng did all the nine questions in the nine-chapter numeracy.

There are geometry, proportionality, Pythagorean, several equations, and so on.

Du Ruhui watched Li Chunfeng take the Nine Chapters of Mathematics in his hand again, and he looked at Li Zheng's solved question with a look in his eyes like a demon.

"There are so many wonderful algorithms." Li Chunfeng was stunned and muttered to himself.

It seems that there are mountain people outside the mountain, and Li Chunfeng feels that he is standing in front of Li Zheng like a mountain man who has never seen the world.

Li Zheng taught Li Chunfeng the operation rules of number formulas, and it would be much easier to solve addition, subtraction, multiplication and division, and also told him some equations.

"It seems that the way of mathematics of the poor road is far from reaching the state of perfection, and the name of this Datang mathematics master is really deserved." Li Chunfeng sighed.

"Remember to send me an official, preferably one who can govern the village for me." Li Zheng said.

When Li Chunfeng returned to Qintianjian, he locked himself in for penance, and he didn't even eat, let alone come out to meet people.

Studying mathematics like a madman, when Yuan Tiangang saw Li Chunfeng, the walls and windows of his room were full of questions.

For Li Chunfeng, it was like breaking a bottleneck, and the original number technique was like being trapped in a bottle.

Li Zheng's equation broke this bottleneck, and he looked up to see the clouds and the moon.

In the Taiji Palace, Li Shimin listened to the eldest grandson Wuji's narration, "You mean to say that there are masters behind Li Zheng who are helping?" ”

"The minister thinks that this kid is just solving a problem and cracking the battle situation in Yinshan, maybe there is someone behind him to help, Your Majesty, imagine what a twelve-year-old child can do?"

Indeed, what can a twelve-year-old do?

Li Shimin somewhat believed in the statement of the eldest grandson Wuji.

Could it be that there was really a master standing behind Li Zheng.

"Your Majesty!" A little eunuch came to report and said.

"Say." Li Shimin's expression was a little displeased.

"Your Majesty, there is news from Qin Tianjian that Li Zheng has solved all the problems of the Nine Chapters of Mathematics."

"Really!?" Li Shimin immediately stood up and asked.

The little eunuch said again: "It was indeed unraveled in front of Li Chunfeng. ”

"Your Majesty!" Another little eunuch came to report, "Du Ruhui, the secretary of the military department, has been cured." ”

"Saved?" This news made Li Shimin's heart excited.

Sun Simiao treated Du Ruhui, Du Ruhui's illness had no medicine for a while, and he could only recuperate, and if he didn't survive the onset, he could only watch people die.

Du Ruhui and Fang Xuanling are their right-hand men, and they are heartbroken when they are missing.

"Did Doctor Sun cure it?"

The little eunuch bowed down and replied, "It was Li Zheng who gave Du Shangshu a kind of medicine, saying that it was a special medicine as soon as he took it." ”

"Li Zheng, Li Zheng, there is Li Zheng again." Li Er paced back and forth.

The eldest grandson Wuji stood aside expressionlessly: "......"

On the second day, Li Shimin listened to Du Ruhui's suggestion and gave Li Zheng an official position in Jingyang Ling.

This official position is just a name, but it can preside over all kinds of things in Jingyang County.

Li Zheng, who was originally a small landlord in Jingyang, was indifferent to this.

After receiving the holy decree, Li Daxiong raised the holy decree in his hand under the onlookers of the villagers, and his face was particularly long.

The village erupted in cheers.

The eunuch who issued the decree smiled and said to Li Zheng: "Congratulations to Xiao Langjun, why is Xiao Langjun still depressed? ”

Li Zhengchang sighed and said: "You said that I became an official, others are happier than me, what do you say I am happy." ”

The little eunuch smiled embarrassedly and left.

"Li Daxiong, it's time to find a daughter-in-law for your son."

"I see that there are a few little girls in the next village who are good-looking."

"It's not a drop, it's so smart, hurry up so as not to be robbed."

"You can't always take care of the children alone at a young age, so you should continue the strings."

……

"Finding a daughter-in-law depends on whether this kid wants it or not." Li Daxiong grinned and looked around. I read it over and over again, "Hey, where's my son?" ”