As dusk approached, the Menxia Province received three memorials requesting Emperor Yuan to depose the empress.

After reading the three memorials, the Left Prime Minister hesitated for a moment and then put them into the memorials that needed to be presented to Emperor Yuan.

In Daxia, not all memorials would be presented to Emperor Yuan for review. Some memorials could be handled directly by the Ministry of Personnel.

Only memorials of great importance or requiring personal review by Emperor Yuan would be presented to him.

Otherwise, if Emperor Yuan had to review every memorial personally, he would be exhausted to death.

After reading all the memorials, the left prime minister raised his hand to rub his aching neck. At this moment, the right prime minister came in from outside with his hands behind his back.

Seeing the Right Prime Minister, the Left Prime Minister couldn't help but recall what the Duke of England said to him at noon, and his eyes were suddenly filled with resentment when he looked at the Right Prime Minister.

If the Right Prime Minister had not forced him to discuss the fact that the Empress had been married, he would not have been punished to copy the "Records of the Grand Historian".

That’s “Records of the Grand Historian”!

It’s such a thick book that his neck would be sore after copying it.

The Right Prime Minister saw the resentment in the Left Prime Minister's eyes and coughed guiltily, "Um... During this period of time, if there is anything you need help with at work, just let me know."

He knew very well why the Left Prime Minister looked at him that way, because he was there when the Duke of England came to convey Lord Xiao Jiang's punishment.

The left prime minister snorted, "I need someone to help me share the punishment of copying the "Historical Records"."

"I have no problem copying the "Records of the Grand Historian", but I'm afraid it will be even worse after Lord Jiang finds out." The Right Prime Minister reminded.

After hearing this, the Left Prime Minister sighed, "Never mind, it's also my own fault that I forgot about the class."

Speaking of classes, the Right Prime Minister couldn't help but say: "I think Arabic numerals have nothing special except that they are convenient for writing. There is no need to learn them at all."

Zuo Xiang also had this feeling, but he felt that the creation of Arabic numerals could not have been simply for the convenience of writing.

“Perhaps there is something special about Arabic numerals that we don’t know about,” he mused.

"You mean Master Xiao Jiang is hiding something?"

Zuo Xiang hesitated and nodded, "I have heard the word "mathematics" more than once from Master Xiao Jiang's conversations."

"Mathematics? What is that?"

Zuo Xiang shook his head, "I don't know, but what I do know is that mathematics is related to Arabic numerals."

After thinking for a while, the Right Prime Minister asked, "Should I talk to Your Majesty about this "mathematics"?"

"No hurry, I will test Master Xiao Jiang tomorrow and see if I can learn something from his inner voice."

At this time, Lu Yunting came to the Supervisory Department to pick up Jiang Yueyang to go home. As a result, they ran into Xie Xu as soon as they walked out of the door.

Jiang Yueyang knew that Xie Xu came for mosquito coils, so she turned back and got a box of mosquito coils for him.

"Thank you, sir. This is mosquito coil."

Xie Xu opened the mosquito coil wrapped in white paper and saw the whirlpool-like mosquito coil with curiosity in his eyes.

Is this tiny thing really that effective in repelling mosquitoes?

Today, he was absent from the court because of something else. After several subordinates who had used mosquito coils waited for a whole day but did not see him, they went to his house to look for him.

They told him that once the mosquito coil was lit, all the mosquitoes would run away within ten breaths.

He knew that this mosquito coil could definitely repel mosquitoes. After all, it was something Jiang Yueyang took out.

But he didn't quite believe that the mosquito coil was as effective as his subordinates said, and suspected that they were exaggerating.

Seeing him staring at the mosquito coil for a long time, Jiang Yueyang couldn't help but call him, "Master Xie?"

Xie Xu came back to his senses after hearing the voice and asked, "Master Xiao Jiang, is this mosquito coil harmful to the human body?"

"There is a substance in mosquito coils that is slightly toxic, but as long as it is used properly it will not cause much impact on the human body." Jiang Yueyang answered truthfully.

Xie Xu nodded after hearing this, "Master Xiao Jiang, I would like to order a hundred of these mosquito coils first."

Jiang Yueyang smiled slightly, "Don't worry, Sir Xie, after you use it, it won't be too late to buy it if you think it's good."

"Okay."

Afterwards, Xie Xu said goodbye and left, while Jiang Yueyang and Lu Yunting went home hand in hand.

At this moment, at the door of Jiang Yueyang's office, Jiang Xun was holding the "Multiplication Table" with a puzzled look in his eyes.

Just now, when he came out to stretch his muscles, he inadvertently saw that his sister's office door was not closed.

He walked over to close the door, but unexpectedly saw a piece of paper on the ground. He picked it up and saw five big characters written on the top line: "Multiplication Table".

Judging from the handwriting, the content above was written by his sister, but what is this "Multiplication Table"?

1x1=1

2x2=4

3x3=9

How is this calculated?

Jiang Xun had attended his sister's classes and knew that the number after the = sign was the sum or subtraction of the previous two numbers.

But this "x" is neither a + sign nor a - sign.

He didn't think that his sister had made a mistake. After all, even if she had made a mistake, it was impossible that she had made all the mistakes.

What is this "x" symbol?

The Multiplication Table...

Addition... subtraction... multiplication... He suddenly thought of something and a hint of shock flashed in his eyes. Could this "x" be called a multiplication sign?

Just when he was thinking about the key point, someone suddenly patted his shoulder from behind and asked, "Jiang Xun, what are you doing standing here?"

Jiang Xun was startled and turned around to find that it was Wen Jinnian, who was also his deacon.

Wen Jinnian's eyes fell on the Multiplication Table, and without waiting for Jiang Xun to reply, he asked, "What is this?"

Jiang Xun subconsciously wanted to hide, but then he thought, Wen Jinnian had already seen it, and it would be useless for him to hide.

So he shook his head and said, "I don't know what this is. I just picked it up on the ground."

"Let me see." Wen Jinnian took the Multiplication Table from his hand and noticed the "x" on it at a glance.

"What is this 'x'?" He then noticed the number after the = sign, "and how was this result calculated?"

"Why is 1x1=1, 3x3=9, 4x4=16?" He asked several questions in a row.

Jiang Xun shook his head again, "I don't know."

"This handwriting..." Wen Jinnian noticed the handwriting, "This thing was written by Si Zheng. Could this be what he is going to teach later?"

Jiang Xun glanced at the Multiplication Table. He and Wen Jinnian had different ideas.

He felt that this was something his sister was not prepared to teach.

Wen Jinnian had no idea what Jiang Xun was thinking, and he stared at the Multiplication Table and thought seriously.

Suddenly, he said in surprise: "Jiang Xun, I know what this 'x' is called! Look, here..."

"It's the multiplication sign." Jiang Xun interrupted him softly.

"So you already knew it."

At this time, Jiang Yueyang, who was on her way home, had no idea that the multiplication matter had been exposed.