Listening to Xiao Changle's immature words, Xiao Rui didn't laugh, after all, everyone would think like this when they were young.

At this time, Xiao Rui was like a patient teacher, and explained seriously: "They don't write the word traitor on their faces. There is a way that is a big hypocrisy like the truth, and a big treachery is like loyalty! The loyalty and treachery of the imperial court are the most difficult to distinguish. ”

Xiangcheng asked, "Husband, why is it difficult to distinguish?" Anyone who supports and kisses should be regarded as a traitor. ”

Xiao Rui asked rhetorically: "What if someone is really for Datang?" ”

"Since you are really for the Tang Dynasty, why do you support Heqin? Don't they know that the other party has bad intentions? Xiao Changle shook his head, indicating that he didn't understand.

Xiao Rui sighed: "You seem to have forgotten that fighting a war costs money. ”

Money?

Xiangcheng was silent, she was older, and she remembered the ninth year of Wude, the Weishui Alliance. At that time, the imperial court looted the treasures of Chang'an and sent them out of the city, which prevented Jieli's 100,000 troops from entering the city.

Since then, everyone in the palace has been thrifty, and even the queen has patches on her body, and a vegetable garden has also been opened in the palace, which is really poor.

Xiao Changle couldn't imagine it, "Our Datang is rich all over the world, are we still afraid of spending money?" How much can it cost? ”

How much?

Xiao Rui rubbed his chin and asked with a smile, "Changle, what is the most money you have ever seen?" ”

Xiao Changle touched his small purse, Xiao Rui panicked, and said in his heart, if you say dozens of dollars in your pocket? So how do I make an analogy? Mountains of copper coins?

But what Xiao Rui didn't expect was that Xiao Changle replied: "I have been to the treasury and seen the silver deposited in it, and I heard from the officials who guarded it that there were 100,000 taels of silver. ”

Xiao Rui sighed, "But if you fight a battle, let alone 200,000 taels, there is no cap." At the beginning, I led people to fight in the Turkic court, and the Tang Dynasty fought fiercely with the Turks in Dingxiang for many days, and that battle cost nearly 300,000 taels. ”

"As for the last time we caught Jieli together, hehe, it's 500,000 taels."

What???

This、So much money?

Xiao Changle's eyes were wide open, he couldn't imagine at all, it was just a battle, how could he need so much? How did you spend it?

How is it spent?

Xiao Rui scratched his head, I can't give you a little calculation, right?

But Xiao Changle had a more serious expression, which means, if you don't calculate, then it proves that you lied to me.

"Ahem, this, this...... After all, it takes time to settle accounts, why don't you eat first, and your brother-in-law will calculate it slowly for you after eating? ”

Xiao Changle pushed the small dining table in front of him forward, "I'm full." Brother-in-law counts now. ”

I......

"Count it now! Count it now! ......" his son Xiao Ping'an also coaxed and urged.

Xiao Rui's face turned dark, "Don't make a fuss!" You're full, and I'm still hungry after a long day. ”

Xiao Changle moved the small dining table to Xiao Rui and smiled, "Brother-in-law, count while eating." ”

Burst......

The donkeys of the production team are not called by you.

"Wait, I'll call someone!"

Call someone? What is it called?

Xiao Changle panicked, "Brother-in-law, you are not allowed to find your father's ......"

Xiao Rui laughed and said, "You also have a person who is afraid." I'm going to find someone who can settle accounts, and you wait. ”

In Xiaojiazhuang, who will settle accounts? I'm afraid no one is better at settling accounts than Xiao Rui.

Xiao Rui couldn't stand Xiao Changle's 100,000 whys, and wanted to be lazy, so he went to Zhao Deyan, Mr. Xiaojiazhuang's free private school.

Here in the Xiao Family School, Zhao Deyan was lecturing Li Chengqian, Yang Zhengdao, Niu Xiaohu, Fang Yiai and others, and when he heard about Xiao Rui's interesting topic, he immediately became interested.

"It's rare for someone to be able to explain the matter of harmony clearly, it's better for you to take classes at home behind closed doors? Forgot about other students? Zhao Deyan laughed and scolded Xiao Rui for not being righteous.

"Didn't I remember it. By the way, Lao Zhao, you have to do a favor later, calculate it in detail......"

After listening to Xiao Rui's topic, Zhao Deyan almost vomited blood, and glanced at it weakly, knowing that you didn't look for me for a good thing, it turned out that you couldn't hold back and remembered us?

What a pit! The detailed cost of a big war often requires several prime ministers to plan for many days, or the entire household department and military department cooperate in the calculation, and you let me calculate it alone in the court? Are you kidding?

"It's okay, the bag is for me. I know of a guy who's really good at calculating this. Wait a minute...... Oh, by the way, you want to arrange for the students to sit down, and I'll come as I go. Zhao Deyan ran away.

Xiao Rui was confused, and said in his heart that in Xiaojiazhuang, who else is better at calculating this than the two of us?

However, he could only press the puzzle, and went back to call Xiao Changle, and Xiangcheng followed with the child. A group of people sat in the classroom in an orderly manner like a student.

Not long after, Zhao Deyan walked in with a person, and after coming in, Zhao Deyan consciously sat on the student seat, but the person behind him walked onto the podium.

Let's take a look, isn't this the second son of Lingnan Feng?

Feng Zhidai greeted everyone with a smile, especially with Xiao Rui. "Is this the question for the exam? It's interesting, I'll be sure to answer it seriously. ”

What? What are the exam questions? Xiao Rui looked at Zhao Deyan beside him.

Zhao Deyan whispered: "He wants to apply for the job of Mr. Arithmetic of the Nameless Academy, I told him that if I explain this to the children clearly today, I will let him pass." ”

You...... Xiao Rui looked at Zhao Deyan in surprise, and after a long time, he lowered his voice and said, "It's still your old guy who is bad." ”

gave Xiao Rui a look, which means that you don't break it.

"Ahem, Feng Gongzi, I need to remind you that the time given to you is limited, so you need to focus on the calculation. In addition, considering that there are many students attending the class today, and everyone has different levels of arithmetic, so you also need to pay attention to the teaching method and try to make it easy for all students to understand. Xiao Rui immediately entered the role.

Feng Zhidai nodded again and again: "Yes, I must pay attention to it in the future." ”

After thinking about it for a while, Feng Zhidai began his own story, "The soldiers and horses go first before the grain and grass are moved, and a big war is not spent a day from the beginning to the end." The first thing that needs to be calculated is the food and grass for the army for a day. For example, a soldier consumes two meals a day, and a horse consumes a day's forage. ”

This is multiplied by the total number of people, which is how much food everyone eats in a day. How much forage does all the horses consume in a day. ”

In this way, how many days did a big war last......

"Wait a minute, can you give an example of a big war? For example, the last time the Tang Dynasty destroyed the Turks. Xiao Changle is concerned about this, she wants to know if her brother-in-law has lied to herself.

Feng Zhidai was puzzled: "Little princess, last time the Tang Dynasty destroyed the Turks, I didn't participate in it, and I don't know how many soldiers and horses the Tang Dynasty used. So ......"

Xiao Rui said with a smile: "Simple, bring pen and paper, I'll write you the approximate data, and you can solve it for this group of children as a problem." ”