After traveling through time, I was spotted by the new emperor

Ye Wuwei glanced at Chen Shusheng, but did not stop and continued speaking.

Ye Wuwei made a total of seven opinions.

As for the household registration management being under the Ministry of Household Registration, Ye Wuwei did not raise any objection.

Although modern household registration is managed by the Public Security Bureau, population mobility in ancient times was not so frequent and intensive, and the Ministry of Household Registration managed national taxes and land, so it was more appropriate for the Ministry of Household Registration to manage household registration.

Moreover, it has been managed by the Ministry of Revenue in all dynasties.

Chen Shusheng's heart was filled with emotion when he heard this.

Although he guessed that Prince Qi would make reforms, he did not expect the changes to be so big and the official system plan to be so complete.

It seems that the idea came from the young man who brought him in.

Who is this young man? How can he have so many ideas at such a young age?

Chen Shusheng couldn't help but look at Ye Wuwei with admiration.

Ye Wuwei didn't notice Chen Shusheng's admiring gaze. After expressing his opinion on the official system, he said to Chu Fuchi:

"And the most important thing is, don't record everything in writing in the future. It's very tedious.

I will teach you a few forms first, and you can use them as needed later."

Ye Wuwei first drew a tree diagram of the official positions to demonstrate: "Do you think this makes it clear at a glance?"

Before Chu Fuchi took the paper to look at it, Chen Shusheng snatched the tree diagram from Ye Wuwei's hand:

"This looks like a branch growing out of a tree, but it's really clear at a glance."

"Since you said it looks like branches growing from a tree, let's call this diagram a dendrogram from now on."

Chu Fuchi "grabbed" the paper from Chen Shusheng's hand and thought to himself:

This Chen Shusheng is so shameless, he thinks he is one of them?

If Ye Wuwei knew what Chu Fuchi was thinking, he would tell him a term: "self-familiar".

Qi Cheng leaned over to Chu Fuchi and looked: "It is indeed clear at a glance."

Ye Wuwei decided to teach them the commonly used bar charts, line charts, pie charts and Excel spreadsheets in modern times.

But after he started writing, Ye Wuwei suddenly remembered:

Modern graphs and tables all rely on computer calculations. Although the Qi Dynasty had addition, subtraction, multiplication and division, they were relatively complicated and there were no Arabic numerals. Most people still relied on counting sticks or counting rods for arithmetic.

So, Ye Wuwei wrote ten numbers from "0 to 9" on the paper, and then wrote the counting units "ones, tens, hundreds... one hundred million, one billion".

"These are numbers, these are counting units. From now on, you will calculate like this..."

Ye Wuyi was teaching addition and subtraction by writing vertical formulas while asking several people to answer questions. Chu Fuchi and Chen Shusheng frequently rushed to answer, and Chen Shusheng was slightly better.

Qi Cheng was the slowest to react. By the time he figured it out, the other two had already answered. He could only regret that he was another step behind.

Especially the addition and subtraction of numbers above two digits, Qi Cheng couldn't figure it out for a while, so he decided to practice more at night.

Even little Dengzi came over to watch the fun.

At this moment, Qi Wushuang's voice came: "What are you doing?"

Everyone stood up and greeted Qi Wushuang.

Qi Wushuang looked at the many papers on the table and walked over to pick up one and looked at it: "What is this?"

The piece of paper that Qi Wushuang picked up listed three-digit subtraction in vertical form.

"This is vertical subtraction. I'm teaching them to count and list, not to use words for everything. It gives me a headache."

"Then you teach me too."

"You sit down."

Qi Wushuang sat down on the chair where Ye Wuwei had just sat. Ye Wuwei sat next to him and began to explain numbers, counting units, addition, and subtraction one by one.

The two of them were so close together that there was no one else around.

Chu Fuchi sat opposite the two of them. Qi Cheng didn't dare to sit down and just stood beside them and listened again.

He didn't hear it very carefully just now, so now is a good time to listen to it again.

Chen Shusheng didn't dare to sit down, but he took a compromise: kneeling down.

After Ye Wuwei finished teaching everything, he gave Qi Wushuang a few addition and subtraction problems and asked him to calculate them in vertical form. Qi Wushuang shouted "Okay".

"Wu Wei, since you know such a good calculation method, why didn't you teach us earlier?"

"forget."

Ye Wuwei really forgot.

In modern times, calculation is something that children in kindergarten start learning, but in the Qi Dynasty, even adults had difficulty learning it.

The main reason is that he has been busy studying coke, iron, weapons, glass, etc. in the past few years since he came to Qi Dynasty, and he has been dealing with technicians, not accountants.

If he hadn't been thinking about teaching Chu Fuchi and the others about bar charts today, he wouldn't have remembered this incident.

Chen Shusheng asked:

"The addition and subtraction you teach us are simpler and more efficient than the methods we used before. So, are multiplication and division also simpler?"

Qi Wushuang looked at Chen Shusheng and noticed that there was another person in the room.

Who is this person?

Chen Shusheng noticed Qi Wushuang's scrutiny and stood up to salute: "My name is Chen Shusheng, and I am willing to serve the prince at my service."

Chu Fuchi explained Chen Shusheng's identity.

Qi Wushuang thought it was Chu Fuchi who introduced him and didn't pay much attention to it. "It just so happens that Fuchi is too busy, so you can stay by his side and help him."

Chu Fuchi glanced at Ye Wuwei and said, "The man was brought here by Captain Ye."

When did Wu Wei meet other people?

Qi Wushuang's expression changed immediately. He looked at Ye Wuwei nervously and asked, "How did you get to know him?"

"I just met him at the palace gate. He grabbed my sleeve and said he was willing to be the sharp knife that the prince would modify, so I brought him in."

Hearing that the two had just met at the palace gate, Qi Wushuang's expression immediately relaxed:

"You follow Fu Chi to help first."

Chen Shusheng agreed and then asked Ye Wuwei about multiplication and division.

Ye Wuwei asked Chen Shusheng about Qi Chao's multiplication and division methods. The multiplication method is the "Nine Nines Technique", which is the same as the modern Nine Nines multiplication formula, but the expression method is different.

But again, there are no formulas for multiplication and division.

Especially division, because there is no division formula, Qi Chao calculates division much more slowly.

Ye Wuwei wrote out the multiplication table, and then listed the multiplication and division formulas to teach the others how to calculate.

By the time Ye Wuwei finished teaching everything, it was already dark.

Qi Wushuang said to Chu Fuchi:

"You will compile these methods Wu Wei mentioned into a book, teach it to every official, and spread it."

Chu Fuchi was dissatisfied:

"Why me again? I'm already so busy with my own tasks. Can't Captain Ye do this?"

Ye Wuwei took over the conversation:

"Don't come to me. I hate trouble. I'll teach you a few, but if I teach other officials, my hair will turn white."

Qi Wushuang imagined what Ye Wuwei would look like with white hair, and it seemed quite good-looking.

However, since Wu Wei is unwilling, then this task can only be handed over to others.

Just as Qi Wushuang was about to speak, Chen Shusheng volunteered, "Leave this to me. I promise to do a good job."

Chu Fuchi thought about it: Given Chen Shusheng’s identity, it is very appropriate for him to do this.

"Your Majesty, leave it to Master Chen."

Qi Wushuang agreed: "Okay, I'll leave this matter to you. If you need anything, please go to Qi Cheng."