In the duckweed courtyard, Li Zhi finished cleaning up the table and went to the copywriter to watch Ye Lin's calculation, it was a strange font, and there were some symbols, Li Zhi couldn't understand it, so he waited quietly for Ye Lin to finish it.

After a while, Ye Lin put down his pen and asked a few simple questions about chickens and rabbits in the same cage, and Ye Lin was curious that the teacher who taught Li Zhi clearly saw that Li Zhi's homework was not done by himself, so why didn't he punish Li Zhi, but instead came up with a few questions to embarrass himself?

Seeing that Ye Lin stopped writing, Li Zhi stepped forward and asked, "Are all the Dao Masters done?" This is a bachelor's advanced arithmetic problem! ”

Ye Lin turned his head and asked, "It's all done, you said that your teacher clearly saw that yesterday's homework was not written by you, why didn't he punish you, but he had to make it difficult to make a question."

Li Zhi swallowed: "I don't know, and I can't guess what the teacher thinks." ”

Ye Lin asked: "Do you know that he didn't give this question to you, but to the poor?" ”

Li Zhi nodded, and Ye Lin smiled: "Then your teacher's advanced arithmetic is not high, he can't make this question difficult for the poor way, why don't you come up with a question for the poor road and help you embarrass him?" ”

Li Zhi shook his head and said, "Embarrassed scholars? Michigan! Scholar Li Si has studied arithmetic all his life, and what other topics can be difficult for him! ”

Ziyun said beside him: "Dao Chief, what King Jin said is right, these questions are very difficult for concubines to do, which shows that this bachelor has studied arithmetic deeply."

"Teacher, preaching, teaching, solving doubts, as a student of King Jin has a problem, he is a teacher to help answer is no problem, from another point of view, everyone knows it, he has three questions entitled difficult poor road, poor road naturally back to him a question, this is no problem, but the problem of poor road is not so easy to solve!"

After Ye Lin finished speaking, he picked up the pen again, and was about to put down the pen, when he stopped and said to Ziyun: "Yun'er, you come to write, if you write in the poor way, even if they can't answer, they will laugh at the words of the poor way!" ”

Ye Lin got up to make room for Ziyun, Ziyun sat down and picked up the pen, Ye Lin said: "A trader's profit in February this year was 4 million Wen, and the profit in March increased by one-tenth compared with February, and the turnover in May brought to 6.336 million Wen, so what is the average monthly increase in turnover from March to May?" ”

After Ziyun finished writing, she raised her head and said, "Dao Chief's question sounds like it's not much more difficult than the pheasant rabbit in the same cage from the university. ”

"It's quite similar, Yun'er, you write down the three answers I just solved, and you don't need to write the process or anything, and you can't understand it even if you write it. And King Jin, tomorrow you will take this piece of paper to find your teacher and ask him to solve his doubts."

After Ye Lin finished speaking to the two, he stretched his waist, I don't know if the scholar will be able to solve this problem tomorrow, if he solves it, he can be regarded as promoting the development of Datang mathematics, and he has contributed to Datang!

Thinking about the sun shining on Ye Lin's robe, Ye Lin glanced at Ziyun, Ziyun was seriously copying the topic, Ye Lin thought of the beautiful appearance under the veil, and looked up at Ziyi who was basking in the sun on the roof, and sighed, I can't eat it now, these days, boring......

The next day, in the morning, Li Zhi took the answer written by Ziyun and handed it to Li Si, Li Si read the answer, squinted his eyes, and even said a few hellos, Li Zhi shrank his head in fright, and didn't dare to say anything, so he returned to his seat.

After class, Li Si stopped Li Zhi, who was playing and leaving, and asked, "His Royal Highness the King of Jin, let the old man answer this question later?" ”

Li Zhi didn't dare to look at Li Si, nodded his head, and was about to leave, Li Si said again: "His Royal Highness King Jin forgot today's schoolwork!" ”

Li Zhi turned around and hurriedly took it in Li Si's hand, but found that it was a blank piece of paper, Li Zhi looked up in surprise, and Li Si said: "This is His Highness's homework today." ”

Li Zhi was confused and found his mother with a blank piece of paper, and after finishing the matter, the eldest grandson said: "Since it is a blank paper, then there is no schoolwork, so Zhi'er will relax for a day today!" ”

"Really, can I go to the Imperial Sister of Lizhi?"

The eldest grandson shook his head and said: "Zhi'er, Lizhi wants to recuperate, you can't go out casually in the future, you can go to your eldest brother, he has been busy with Xinlu recently, you might as well go and take a look." ”

Li Zhi lowered his head again when he heard this, and the eldest grandson got up and went to the Taiji Hall with the blank paper given by Li Si.

"Your Majesty, your wishful thinking is going to come to naught"

The eldest grandson sat next to Li Shimin with a smile, and Li Shimin wondered: "What abacus?" ”

The eldest grandson put the blank paper in front of Li Shimin and said: "This is Li Si's homework for Zhi'er, there is not a word, and the scholar is stumped by Ye Lin's topic!" ”

Li Shimin exclaimed: "What? Did Ye Lin give Li Si a question? Li Si has studied arithmetic all his life, how can he stump Li Si? ”

So, on the first day, Li Si took a leave of absence because he was infected with a cold and had a day off.

On the second day, the students were still on leave, and the students' classes were temporarily taken by another bachelor.

On the third day, Li Shimin sent the imperial doctor, and the subordinate said: Li Si is not at home, and he went alone to worship the arithmetic teacher of the university scholar, and the imperial doctor asked the subordinate Li Si how his condition was, and the subordinate replied: "In the study all day, the appetite is not good, and the spirit is not good, no matter how you persuade him, the university scholar refuses to seek medical treatment!" ”

After waiting for a long time, no one came back, helpless, the imperial doctor left, near the evening, Li Si, who was full of alcohol, went home, slept until noon on the fourth day, and after getting up, he took the written fold to the Taiji Palace.