Tang Zhuoyu walked to the square lectern, and when he was sorting out the lesson plan, his eyes glanced faintly at someone who was sitting or not.

Half of his face is still swollen, and his panda eyes are still there.

Even so, it can't hide the beauty of his red lips and white teeth.

He looks like a human.

Tang Zhuoyu raised his eyebrows, and the corners of his mouth were flattened.

A cold wind was coming, Ning Yuchu tightened his neckline, where did the wind come from?

"Qingqiu, close the windows tightly."

Qingqiu has been ordered.

However, the temperature inside the house did not rise with it, and it was still cloudy and windy.

"Qingqiu, add charcoal fire."

Qingqiu has been ordered.

When the silver silk charcoal burned vigorously, Ning Yuchu felt a little warmer.

At this time, the smile on the corner of Tang Zhuoyu's mouth was just right.

"From today on, I will be responsible for teaching Shizi arithmetic, and before the class starts, we will explain some rules first, so as to facilitate better run-in and adaptation in the future."

Ning Yuchu was vigilant and squinted: "What rules?" ”

Tang Zhuoyu smiled lightly between his eyebrows, exuding harmless gentleness.

"Shizi doesn't have to be nervous, my rules are very simple, I don't limit the duration of class by time."

"What is that qualification?"

"The power of the prince to grasp knowledge."

Ning Yuchu's eyes rolled, raised his eyebrows and said, "You mean, if the master receives it quickly, he can leave class early, and if he receives it slowly, he will leave class later?" ”

Tang Zhuoyu smiled and nodded: "Yes, I have learned about Shizi's other courses, except for the music and rhythm, everyone's evaluation of Shizi is that he has strong learning ability, fast response speed, and never forgets." The knowledge is universal, and I believe that the subject of arithmetic should not be difficult for you. ”

Ning Yuchu's guard was broken by his few comments, and he was still a little proud in his heart.

"Okay, you accept this rule."

When the words fell, he felt that he had promised too simply, too shameless, and immediately defended himself: "Etiquette is still exchanged, and I also have rules." ”

"Listen up."

"You must not restrain the master too much, such as sitting and standing in the classroom, eating in class, etc."

Tang Zhuoyu bowed his head: "This is the freedom of the prince, and I will not interfere with it." ”

Ning Yuchu was very satisfied with the first impression of this arithmetic teacher.

Not only is the way of going to the Tao very open-minded, especially the rules on the length of the class.

He was secretly happy, and when the time came, he could play as much as he wanted, and he couldn't care about the ugliness.

Unbeknownst to him, he was stepping into the trap step by step, and by the time he realized it, it was too late.

Tang Zhuoyu handed the book to Jin Feng, and Jin Feng walked down and placed it on Ning Yuchu's desk.

Ning Yuchu swept a few words on the cover and read them: ""Nine Chapters of Arithmetic"? ”

Tang Zhuoyu picked up the same book and said softly: "Yes, let's understand the background of this book first." ”

"This book is the most important of the Ten Books of Arithmetic, it is rich in content, it is the first to mention the problem of fractions, and it is also the first to record problems such as insufficient surplus......"

"As the name suggests, it is divided into nine chapters, in the form of problem sets, including 246 application problems closely related to production and life......"

"They are nine chapters of 'Fangtian', 'Corn', 'Decay', 'Shaoguang', 'Shanggong', 'Average Loss', 'Insufficient Profit', 'Equation' and 'Pythagorean'."

Tang Zhuoyu began to explain the general content of each chapter.

What kind of grain is exchanged, and what is the reasonable apportionment of taxes......

Ning Yuchu heard that one head and two were big, and he wanted to cover the book on his face.

And many years later, he was extremely glad that he did not drop the book and leave at that time, but listened to this course honestly, and he couldn't do without it until he was old.

[After the update, see you in the early morning of the next watch.] 】