In the banquet hall, Mr. Thin saw Prince Pei Dilan's unhappy face and knew that he couldn't get up and down. So he decided to challenge Li You again, and he must save face.

Mr. Thin is a famous arithmetic master of Dashi, and he said very confidently: "How is your arithmetic in the Tang Dynasty, I want to ask His Royal Highness the King of Qi for advice." ”

Li You smiled and said, "Mr. Thin, please speak." ”

Mr. Thin cleared his throat and said with a smug face, "Please listen." ”

Seeing his appearance, Li You suddenly remembered Li Chunfeng, when he showed off the chickens and rabbits in the same cage, he was like this, and the smile on his face became even stronger.

"Huh? What do you mean? I haven't even asked the question, why is he laughing? Mr. Skinny was a little confused.

However, he immediately thought, "When I stump you with my question, see if you can still laugh." ”

He said: "On this day, Avanti came back from outside on his beloved little donkey, and from a distance he saw two people, one tall and one short, standing in front of his house.

'Avanti is back!' The tall and short men eagerly greeted them, and asked Avanti to calculate for them what to divide the five copper coins.

Avanti smiled and said, 'Ah, two gentlemen, I don't know what is going on, how can I calculate it for you?' ’

The two talked for a while, and Avanti figured things out.

It turned out that the two of them cooked and ate together today, and the tall man took out 200 grams of rice, and the short man took out 300 grams of rice. When the meal was ready, the two were about to eat when a passer-by suddenly came, and the passer-by asked them to let the cooked rice be eaten by the three of them. As a result, the three of them finished the meal together.

When the passers-by left, they thanked the tall and short men, and left five copper coins for the meal. But how do you divide the 5 copper coins between two people?

The short man said that if he made 300 grams of rice, he would take 3 copper coins, and if the tall man made 200 grams of rice, he would take 2 copper coins. But the tall man said that these five copper coins were given to them by passers-by, and they should be divided equally, and each person should take two and a half copper coins. The two of them counted the past, but they didn't know how to calculate it.

Excuse me, what should Avanti do? ”

After Mr. Thin finished this question, he deliberately looked around, saw the puzzled looks on the faces of those big food generals, looked at Li You and said proudly: "Your Royal Highness King Qi, what do you think?" ”

Li You didn't answer, and looked towards the white tiger.

The white tiger smiled and nodded, looking eager to try.

In the Qi Palace, since the prince defeated Li Chunfeng, there has been a craze for learning mathematics, not only the princesses, but even the guards, maids and male servants will count similar topics.

Li You smiled and said, "Mr. Thin, how about letting my guards answer you?" ”

"You?" Mr. Thin looked annoyed, thinking that Li You was humiliating him.

The white tiger stood up and said, "Lord Wang, the little one thinks it should be divided like this:

Because 5 copper coins are the meal money of one person, and it is three people who eat, the meal money of three people should be 15 copper coins. The meal shared 500 grams of rice, so the price of 100 grams of rice should be 3 copper coins.

The tall man produced 200 grams of rice, which was counted as 6 copper coins according to the money, and if he ate together, 5 copper coins should be deducted from the rice money, so he only deserved 1 copper coin. The short man produced 300 grams of rice, which was counted as 9 copper coins according to the money, and if he also ate together, he should also deduct 5 copper coins from the rice money, so he deserved 4 copper coins. ”

After Baihu finished speaking, he looked at Li You a little unconfidently, and when he saw Li You smiling and nodding, he put his mind at ease and glanced at Mr. Thin proudly, and then sat down.

The big cannibals all stared at Mr. Thin, and when they saw him stunned there, the expression on his face changed, and he suddenly felt a chill in his heart, knowing that he had answered correctly.

Qualcomm saw that the white tiger was brilliant and stretched out his thumb to congratulate him. He whispered: "Give the big cannibal a problem, chickens and rabbits in the same cage, and see if they can figure it out." ”

The white tiger shook his head slightly and pouted at Li You.

Li You confessed that he couldn't take the initiative to challenge the big cannibals to prevent them from becoming angry.

Mr. Fat has never come out, he is secretly pondering the problem, hoping to stump Li You in one fell swoop, but he has never thought of a better topic. At this moment, he saw that Mr. Thin was embarrassed, and said in a round: "His Royal Highness King Qi, you Tang Dynasty people are indeed not simple, can I ask you a question?" ”

"Fat sir, please speak." Li You said politely.

Mr. Fat, who is well versed in the calendar, asked, "Excuse me, what do you think of the Great Eclipse Calendar, the Julian Calendar, and the Solar Calendar, and what are the differences between them?" Which is more precise? ”

The calendar is a very professional knowledge, and it is difficult for ordinary people to master it.

Li You talked eloquently, and he talked about the origin and characteristics of the calendar mentioned by Mr. Fat.

The Julian calendar was a calendar implemented by Julius Caesar, the dictator of the Roman Republic, after adopting calculations by the mathematician and astronomer Sosicheni, on January 1, 45 BC, to replace the old Roman calendar. In the Julian calendar, the year is divided into 12 months, alternating between large and small months; There is a leap day in four years, 365 days in a normal year, and 366 days in a leap year is an additional leap day at the end of February of the same year, with an average annual length of 365.25 days. It is the predecessor of the Gregorian calendar, which is still in use today.

The solar calendar is the Persian calendar.

The Great Eclipse Calendar is based on these two calendars and formulated according to the characteristics prescribed by the doctrine, and Mr. Fat is one of the main people involved in the formulation of the Great Eclipse Calendar.

Li You especially analyzed the Great Eclipse Calendar, believing that the achievements of the Great Eclipse Calendar were higher than those of the Julian and solar calendars.

The big cannibal looked at Li You, who was eloquent and talkative, and deeply admired this prince of the Tang Dynasty.

The Great Eclipse Calendar was affirmed by Li You, and Mr. Fat was very happy, and he had a sense of bosom friend for Li You. He asked, "How does the calendar of the Tang Dynasty compare to the Great Eclipse calendar?" ”

Li You said seriously: "Each has its own strengths, no matter what it is. ”

The Great Cannibal was very happy to see that his calendar had been rated so highly, and the embarrassment caused by Mr. Thin had been diluted a lot.

The banquet continued, everyone no longer competed, did not talk about the topic, chatted about some anecdotes, the wind and snow, and the atmosphere was very harmonious.

While drinking, Li You observed Pei Dilan with the rest of his eyes, and saw that he was depressed, so he said, "General Adnan, I have something I want to ask you. ”

Adnan said, "His Royal Highness the King of Qi, please speak." ”

Li You said: "I have heard that there is a young prince in your caliph, Pedilan, who is about the same age as me, and he is said to be handsome, erudite, and excellent in martial arts. I have great admiration for him, and if the general has the opportunity, he will pay tribute to him on my behalf, and hope that he will have the opportunity to make friends with him. ”

After speaking, he waved his hand, and the white tiger hurriedly stood up, took out a brocade box, opened it, and held it in the air. He saw the sunset shining through the window on the wall, and specially put the brocade box into the sunlight.

"Wow." Everyone's eyes lit up, and they couldn't help but let out a sound of exclamation. I saw that inside the brocade box was a huge crystal ball, shining brightly in the setting sun.

Li You said, "In order to show my respect for His Royal Highness the Prince, I would like to ask the General to transfer this gift to me. ”

Pei Dilan's eyes lit up, and the corners of his mouth showed a slight smile.

The banquet is coming to an end, and Li You and Adnan have agreed to hold a formal meeting at 10 a.m. tomorrow.

At this moment, Ario, the commander of the Khorasan cavalry, stood up and said, "Respected His Royal Highness the King of Qi, I see that the Tang army is very elite, can you have a competition with my troops?" ”