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At noon, after the reception banquet ended, Li You, Murong Ling and others returned to the Qi Palace.

As soon as I walked to the door, I saw an official wearing a Taoist symbol standing at the door. It turned out to be Li Chunfeng.

Since Li You easily solved the difficult problems he carefully studied, Li Chunfeng was itchy and asked Li You for math problems from time to time.

In the original time and space, Li You had enough school and was so tired of doing homework. He was an undergraduate student after all, and now he had to talk about elementary school mathematics with Li Chunfeng, and he had no interest at all.

So he just told Li Chunfeng one thing, but he didn't explain it too clearly, so he asked him to go back and think about it, so that he could avoid the entanglement of digging into the bottom line.

Before Li You left Chang'an, Li You told him a one-yuan equation, which Li Chunfeng used to calculate questions such as chickens and rabbits in the same cage. He was very skillful and excited for a long time, so he waited for Li You to come back to discuss further.

Li Chunfeng was not of sufficient level and did not participate in the morning court. He didn't know Murong Ling and Hao Lianbote. He stepped forward and bowed, saluted Li You, nodded to Murong Ling and others, and asked Li You directly:

"Your Highness, I have studied the one-center equation you taught me and I feel it is very useful. I learned from it and found that it can solve many problems. I have another one..."

"Master Li." Li You interrupted him directly. He said, "I have guests today. You can go back first, and talk about it in a few days." He wanted to send Li Chunfeng away.

"Wait a minute, what is a one-in-one equation?" Murong Ling felt curious and couldn't help asking.

Now, Li Chunfeng found his soulmate and asked, "Your Highness, who is this little lady?"

Li You introduced: "This is Taoist Master Li Chunfeng. This is Murong Ling, the newly enthroned princess of Yinzhou, the court, and this is Hao Lianbote, the left prime minister of Tuyuhun."

Li Chunfeng bowed and said, "I have met Princess Murong." Then, he said directly: "Princess, this one-yuan equation is very useful. Look, I will give you a question, a cage..."

He took out his proud chicken and rabbit cage again.

Murong Ling was attracted by this question at once, and stared at her eyes and started counting her fingers.

Li Chunfeng looked at Murong Ling and smiled proudly.

When Li You saw that standing at the door was not a big deal, he said, "Girl, Lord Hao Lian, Master Li, let's talk in our mansion."

Walking on the road, Murong Ling didn't say a word and kept thinking.

Li Chunfeng said proudly: "Princess, this question is one of the most difficult questions in the Tang Dynasty. Apart from His Highness the King of Qi, it is the minister who can solve it.

If you can calculate carefully, you will definitely be the first master of math in Tuyuhun."

Murong Ling was dizzy when she heard Li Chunfeng showing off, staring at her eyes and said, "I'm just thinking about it, don't always talk here, which interrupted my thoughts."

At this time, Nagashi Tian Toshi came over and said, "Your Highness, I want to report to you about your financial situation after you leave."

Li You said to Murong Ling: "It just so happens that I have something to do, so you and Master Li will calculate slowly."

Murong Ling waved his hand and signaled him to do his own thing. He lowered his head and walked while continuing to count.

Tian Min reported to Li You about the income and expenditure of all industry and commerce. Overall, the situation was good. However, this time he supported Murong Bo, Li You borrowed money from Hamid, and the money had to be repaid.

This money was paid for by Li You for the court, and it was supposed to be paid by the court. However, Li Shimin cheated and made a clear statement that the court had no money, so he asked Li You to find a way to make this large amount of money back.

Seeing Tian Min's worried look, Li You smiled and said, "It's okay, isn't it just more than one million guan? I'm just a little bit. Okay, don't worry."

After saying that, he walked towards the guest room.

Tian Min looked at Li You's back and still looked sad. She said to herself: "Selling a loaf of bread only costs two cents, which is more than one million yuan! Your Highness's heart is so big."

When Li You walked to the door of the guest room, he heard Li Chunfeng showing off: "Princess, you can't calculate this way. Look at my algorithm, 25 chickens and 18 rabbits, look at it, right."

When Li You went in, he saw that there were several sheets of paper in front of Murong Ling, which were written in a mess, just like when Quan Wanji calculated this at that time.

Li Chunfeng made an equation and was showing off.

Hao Lianbote was thinking with his beard twisted, while the magpie stared at him and his eyes were calculating, while the white tiger was also stretching his neck to look.

Seeing Li You come in, Murong Ling said, "Li You, I want to learn this math. Please let Master Li teach me."

Li Chunfeng is a person with Taoism and will not be greedy for others' merits. He quickly said, "This is not possible. This little thing that I have learned from him is also taught by His Highness the King of Qi. Your Highness, Princess, you should ask the King of Qi to come down to teach me."

After Li You sat down, he saw them staring at him. He suddenly remembered a joke about fooling Fan Wei in Zhao Benshan's sketch, and said with a smile: "Do you all want to learn to calculate?"

Everyone nodded together.

Li You smiled and said, "In this way, I will give you a question to test you. The simplest thing is. If you can answer it, it means that you are smart and then you can teach me."

Li Chunfeng immediately felt energetic and said, "Your Highness, please give a question."

Li You smiled and said, "Listen, under what circumstances, one plus one does not equal two?"

Murong Ling said first: "Li You, you are wrong, you are wrong, you are wrong, you are wrong, one plus one is equal to two, and under what circumstances is equal to two."

Li Chunfeng also said: "Your Highness, you are probably wrong. One plus one is equal to two."

Li You looked at the magpie and the white tiger, and they nodded affirmatively, proving that it was the prince who was wrong.

Hao Lianbote is a well-educated person. He was embarrassed to attack Li You, so he didn't speak. But that expression also showed his attitude - Li You was wrong.

Murong Ling curled his lips and said, "With your level, can you still teach others? I'd better ask Master Li to teach you."

Li You asked: "You are sure that in any case, one plus one equals two, right?"

Everyone nodded together.

Murong Ling said directly: "You are wrong, you are so stupid."

Li You smiled and said, "Tell you, there is a case where one plus one does not equal two - if you calculate it wrongly, it does not equal two!"

"Puff", Hao Lianbote just took a sip of tea and sprayed it out directly.

"Hahahaha, giggle," everyone laughed together.

Li Chunfeng coughed so hard that he laughed, the white tiger rubbed his stomach with laughter, and the magpie's tears flowed out.

Murong Ling giggled and hit Li You directly on the arm.

After laughing and making fun, Li You began to explain the basic knowledge of mathematics to them.

Li Chunfeng listened and recorded.

Hao Lianbote also took the pen and took notes seriously. He said, "Your Highness, please tell me more. I will take it back to Tuyuhun and teach it to the people there."

Li Chunfeng also said: "Yes, Your Highness, can you write a textbook? This math knowledge is so useful. Our Tang Dynasty needs it."

Li You had long discovered that people in this era had very weak mathematical knowledge and were often troubled by simple mathematical problems.

Not to mention ordinary people, even the officials in charge of statistics in the Ministry of Revenue have extremely low work efficiency. A modern person can match the work efficiency of dozens of officials in the Ministry of Revenue without using computers and by writing alone.

He said, "Okay, let's write a popular mathematics textbook together."

The Dragon Boat Festival has finally arrived, and the highly anticipated poetry competition has begun.
Chapter completed!