The value of this bottle of medicine may not be worth 30,000 yuan to Li Zheng, but it is not so small to himself. This kid is clearly taking Ding Laofu, and Du Ruhui was thinking in his heart.

"Take someone in three days," Li Zheng said.

"Yes." Du Ruhui nodded, almost forgot to ask him why he didn't come to the capital, and then said, "I heard that you were driven out by Shushe. I asked you, since you don't want to be an official, do you want to live such a mediocre life?"

"What's wrong with that?"

"Do you have no ideals? As a man, don't you want to achieve something?"

"Ideal." Li Zheng thought for a while and said, "I had an ideal before."

“What ideal.”

“I want to build an elevator in the Himalayas.”

“What to fix?”

"You won't understand even if you say it."

"Well." Du Ruhui sighed, but he already had the idea of ​​relocating Li Zheng. Even though he did not want to become an official in the court and could not let the Tang Dynasty lose this talent, it would be better to give him a false title.

But how could this kid be so angry at a young age?

What will a child experience make him feel so angry? Could it be that it was really driven out by the Bookstore?

"Is there anything else?" Li Zheng saw that the two of them had not left yet.

Li Chunfeng stepped forward and asked, "I'm Li Chunfeng."

Li Chunfeng? Li Zheng was in a little interest, "Are you Li Chunfeng who wrote the picture of the tutor with Yuan Tiangang?"

"Do you know the Tuibei Tu too?" Li Chunfeng was surprised by Li Zheng's words. Tuibei Tu was indeed done by himself and Yuan Tiangang, but it was only for Li Shimin to see. There were very few people in the court who knew about Tuibei Tu. How did a child from the countryside know about it?

"I've heard of it." Li Zheng said without thinking.

Li Chunfeng explained his purpose again and said: "Child, I have seen your problem solving. The nine-chapter mathematics problem was hanged up by me. I think your problem solving method is very wonderful."

It's just an algebraic operation. You, Li Chunfeng, have never seen advanced math problems in 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, I will give you this nine-chapter mathematics technique."

"Not interested." Li Zheng turned his head and looked at the house he repaired in the distance.

This... is this kid looking down on Jiuzhe Mapping Technique?

Li Chunfeng stood there for a long time and couldn't speak.

"I don't want the Nine Chapter Mapping Skills. If you can arrange an official for me, I will tell you how I solve the problem."

"Okay! I promised you, just ask you not to use those strange words to solve the problem." Li Chunfeng's eyes were full of enthusiasm.

For Li Chunfeng, Li Zheng’s solution to the problem is like opening the door to a new world.

Li Zheng took the nine-chapter mathematics book in Li Chunfeng's hand, and started to calculate the questions with his own charcoal pen, and calculated one question after another. After an hour, Li Zheng completed all the nine-chapter questions in the nine-chapter mathematics.

Here are geometry, equivalence, Pythagorean, several equations, etc.

Du Ruhui watched Li Chunfeng hold the nine-chapter mathematics in his hand again, and his eyes looked like a devilish look at Li Zheng's solved problem.

"So there are so many wonderful algorithms." Li Chunfeng said in a daze.

It seemed like there were mountain people outside the mountain, and Li Chunfeng felt like he was standing in front of Li Zheng like a mountain man who had never seen the world.

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

"It seems that my numerology is far from perfect. I am really worthy of the name of this great master of the Tang Dynasty." Li Chunfeng sighed.

"Remember to send me an official, it's best to manage the village for me." Li Zheng said.

When Li Chunfeng returned to the Imperial Heaven Prison, he locked himself in and practiced hard, and he didn't even eat food, let alone come out to see people.

He studied mathematics like a devil, and when Yuan Tiangang saw Li Chunfeng, his room walls and windows were full of questions.

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

Li Zheng's equation broke this bottleneck, and he looked up and saw the clouds and fog and the moonlight.

In Tai Chi Hall, Li Shimin listened to Changsun Wuji's statement, "What do you mean is that there is a master behind Li Zheng helping?"

"I think this child is just solving a problem and solving the Yinshan battle situation. Maybe there is a master behind him to help him. What can a twelve-year-old child do?"

What can a twelve-year-old do?

Li Shimin believed in Changsun Wuji's statement a little.

Could it be that there is really a master standing behind Li Zheng?

"Your Majesty!" a little eunuch came to report.

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

"Your Majesty, the news came from the Imperial Heaven Supervision Li Zheng solved all the problems of the Nine Chapters of Mathematical Techniques."

"Take it seriously!" Li Shimin immediately stood up and questioned.

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

"Your Majesty!" Another eunuch came to report, "The illness of Du Ruhui, the Minister of War, was saved."

"Is it saved?" This news made Li Shimin excited.

Sun Simiao had seen Du Ruhui's illness, but Du Ruhui's illness was not cured for a while, so he could only rest. If he did not survive the disease, he could only watch people die.

Du Ruhui and Fang Xuanling were both right-hand men, and each of them was heartbroken.

"Did Doctor Sun cure it?"

The little eunuch bowed and replied, "It was Li Zheng who gave Du Shangshu a medicine, saying it was a special medicine and it would be fine once you took it."

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

Changsun Wuji stood aside with a expressionless face: "..."

The next day, Li Shimin listened to Du Ruhui's suggestion and gave Li Zheng an official position as the Jingyang Order.

This official position is just a title, and it can only take charge of various things in Jingyang County.

Li Zheng, who was originally a small landlord in Jingyang, was not moved by this.

After receiving the imperial edict, Li Daxiong raised the imperial edict in his hand under the watch of the villagers, and he had a very long face.

There was a lot of cheers in the village.

The eunuch who issued the imperial edict smiled and said to Li Zheng: "Congratulations to Xiaolangjun, why is Xiaolangjun still frustrated?"

Li Zheng sighed and said, "You said I was an official, and others were happier than me. Why do you think I was happy?"

The little eunuch left with embarrassment.

"Li Daxiong, it's time to find a wife for your son."

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

"It's not that good. It's so beautiful. Hurry up and avoid being robbed."

"You are too old to keep children alone, so you should continue."

...
Chapter completed!