"Dad, it's just saltpeter ice making, so there's nothing to do with fuss." Li Hao was not going to explain, but he seemed to be really frightened when he saw that the old man seemed to be really scared, so he added: "Salpeter will absorb a lot of heat after encountering water. The heat in the copper basin is absorbed away, and the water inside will naturally become ice."

Li Jing frowned and was a little unbelievable: "How did you know this?"

"I wrote it in the book, but... I forgot it." Li Hao used the "forgettable" technique, making Li Jing speechless.

Thinking about the purpose of Hongfu bringing Li Hao to the study, Li Jing became even more depressed. Thinking about his wife's previous sentence: Learn more from your father, and his old face is hot.

Who learned this from whom?

I have to say that Li Jing was in pain and happiness at this time.

Especially when looking at the admiring look of the housekeeper Lao Chen looking at his son, Li Jing felt a sense of comfort.

But then again, my son is so outstanding, so I am very stressed.

In order to earn some face, Li Jing frowned and thought for a long time, and a flash of inspiration in his mind: "The method of making ice with saltpeter is good, but Dejian, the price of buying saltpeter is not cheap. It is unwise to waste it just a little ice."

However, Li Jing misjudged the form, and saw Li Hao shook his head and said honestly: "Dad, it won't be wasted. Those saltpeters can be used repeatedly. Just dry the water mixed with saltpeter and then it will be made. After the water evaporates, no matter how much saltpeter is used, it will be extracted."

This is so embarrassing. Li Jing glared at his son. You won’t be stupid once. I’m always so 'smart'. Do you want my face?

Finally, Hongfu helped Li Jing to help him clear the siege: "Okay, okay, let's not talk about the broken stones anymore. Dejian, since you calculated so quickly, why not ask your father what other accounts there are? You can do it for your father to calculate."

Li Jing: “…”

Li Hao: "Okay, I'm fine."

...

...

Half an hour later, the sound of drums outside had just hit. Li Hao put down his pen: "Dad, the food, military pay, etc. have been calculated. Is there anything else to calculate?"

Li Jing held the calculation sheet in his hand and continued to calculate, and he threw it aside, and took a deep breath and said, "It's gone."

Li Hao stood up and stretched his waist, looking calm and gentle. He said, "Oh, then I'll leave."

Li Jing wished this brat to leave quickly. He now had a headache when he saw Li Hao.

But before Li Hao could reach the door, he came back. He stared at the calculation plan in his hand for a while and said, "Dad, you are already an eliminated thing. I'll make an abacus for you, which is better than this one."

"I understand, you go quickly." Li Jing said impatiently, as if he was almost driven away with a big stick.

Helplessly, Li Hao shrugged his shoulders and turned away, and the old man's depressed sigh came from behind him.

Regarding the old man's depression, Li Hao said that he was powerless. This was impossible. Who made him too strong? Although he had tried his best to control it, the aftermath still hurt the old man very much.

But this is good. At least you don’t have to learn from the old man anymore, and your father and mother will not always talk about things by idling.

In the study, Li Jing was holding the data provided by his son and was mixed with emotion, unable to say whether he should be happy or happy.

Judging from his years of experience, his son's ability is definitely more than this. If he really wants to calculate these data, he is afraid that he can't even use it for a quarter of an hour. The reason why he has used it for so long is probably to save face for himself.

Hongfu reacted slowly, and at this time he knew that he had done something bad, he hesitated and asked, "Husband, do you think Dejian wants to learn from you?"

Li Jing naturally knew what his wife was thinking, and snorted: "Hmph, this kid has a lot to learn. It is easy to add and subtract simple, but how can it be so easy to fight a war? The daily distance of marching, how to mobilize each army, and how to arrange logistics are these. If I hadn't planned all these, would you think he could calculate the results so easily?"

Hongfu said in surprise: "Why didn't you tell him just now?"

Li Jing said lightly: "Young people, if you don't suffer any loss, you always think that they are great. I don't tell him that they want him to suffer some loss, so that they won't be too far away when they go out in the future."

Hongfu nodded, thought for a while and said, "My husband hasn't been busy counting these things for a long time. Could there be something big going on this time?"

"Yes, Your Majesty wants to conquer the rebels." Li Jing sighed: "The Liang army is in trouble with the local government, colluding with foreign enemies, and conspiring to rebel. Your Majesty is planning to send troops in the near future for the world."

Hongfu sighed as well after hearing this: "Oh, I've only been alive for a few days now, and I'm going to fight again."

Li Jing stopped Hongfu: "The wars that should be fought are always to be fought, so don't worry about them."

As the Minister of War, before the troops moved, he had to make plans in advance, how much troops were sent, how much food was consumed, and how much money was spent. These all require plans in advance. Otherwise, if you don’t think about it, you will start working directly. If you lose money in half of the battle, you will be embarrassed and lose your troops. You may be afraid that it will be possible to lose your troops.

But he didn't know that after returning to his yard, Li Hao also showed a deep emotion expression.

The old man is the old man, and the war god is the war god. It's really amazing.

A few simple account books and a few simple data have completely quantified a battlefield.

Li Hao, who was born in a military academy, seemed to be doing simple calculations, but he saw a lot of things from it, but he didn't dare to let the old man know that he had seen it.

After all, he had never learned military tactics from the old man, so it can be said that he could read the book, but in a war, the allocation of military power and food supply are impossible for people who have not learned systematically.

If he had any expression of admiration at that time, it would inevitably arouse the old man's suspicion, and it would be difficult to explain.

The girl Lanling seemed to have heard some rumors. When she saw Li Hao coming back, she came up excitedly and asked in a very gossip: "Young Master, are you a god?"

Just as he was thinking about the old man, he was stunned when he heard this: "God? What a mess?"

Lan Ling pursed her lips: "Young Master, the people in the back house have spread all over the place. Do you still want to hide it from your maid?"

Li Hao blinked and stared at Lan Ling speechlessly: "What am I hiding from you? Or... what rumors have you heard again?"

Lan Ling was a little embarrassed and said stutteringly: "Just the people in the back home just said that you can teach people to turn water into ice in the hot summer."

Li Hao: "..."
Chapter completed!