Seeing the surprised expression of the second brother when he read the letter, Zhuge Zhi Zhuge Lan, who was originally doing housework, also surrounded him, and the three faces gathered together to squeeze to read the eldest brother's letter.

Only the young third brother Zhuge Jun is left, and he is still tinkering with new toys without heart and lungs.

"Big brother wants us to go to Yuzhang and share his worries with his uncle? What do you think of the second brother and sister? Liu Biao should still be a hostage to us, right? Do you want to sneak away?

Ah Liang, you go out a lot, do you say that if we take a boat to go to Hanshui, will we be inspected? Or are you going to go alone in disguise? Anyway, as long as someone stays, Liu Biao will not embarrass us. ”

After hastily reading the serious matter explained by Zhuge Jin's letter, the eldest sister Zhuge Zhi took the overall situation into account and was the first to think of it.

Liu Biao didn't have bad intentions towards their family, he just wanted some protection, and there was no danger of staying.

Zhuge Lan listened to her sister's idea, but she was a little worried, and sighed: "Eldest sister, you are afraid that it will be self-defeating. The second brother said goodbye, and we stayed, and in the future we will only be guarded more strictly - I don't say this because of selfishness. ”

Zhuge Zhi: "I didn't say that you were selfish, I just suggested casually, after all, the eldest brother brought soldiers, and I was afraid that he would miss the time when he waited for Ah Liang." ”

Zhuge Liang felt that his sisters were really noisy, so he forcibly calmed himself down, and said with a final word:

"Don't be afraid! If you want to go, you will naturally go openly. Although Liu Biao has no malicious intentions, it has not been a day or two since the Pang family of the Kuai family wants to marry us.

If I slip away alone, your situation will only be more difficult. It's not that this little thing can't be solved, but I'm not a traitor. ”

Zhuge Zhi Zhuge Lan doesn't know much about outside things, and at this time, he still needs a man to reassure his family.

After listening to their brother's words, they instantly felt relieved and felt that there must be a way.

Especially Zhuge Lan, there was some warmth in her heart - she didn't care about selling her younger brother to the little lady of the Huang family before, anyway, men would be able to take concubines in the future.

But her younger brother wouldn't sell her to Pang Shanmin, and she couldn't help but feel a little ashamed.

The second daughter waited quietly, and no longer disturbed Zhuge Liang's train of thought.

About a cup of tea, Zhuge Liang finally came up with a preliminary idea:

"I think our family is still justifiable, find an opportunity for Liu Biao to feast celebrities in public, and squeeze Liu Biao in the name of filial piety.

I only said that I heard that Yuzhang was in danger again, and the war had changed, so I was willing to rush to help my uncle. Then I showed Liu Biao a private message reporting the urgent military situation-

You don't have to worry about the source of the letter, I will use this blank silk silk given by my eldest brother and stamped with the seal of Yuzhang Taishou and Captain Pingyu, and just imitate my eldest brother's handwriting and write it now.

Liu Biao's name is Bajun, and he will not want to embarrass the younger generations of benevolence and filial piety when the high friends are full, so he will let us go. ”

Zhuge Liang said as he took out a blank silk stamped from the pile of scrolls next to him.

Obviously, Zhuge Jin prepared multiple sets of plans for his younger brother in advance, so that Ah Liang could act at the opportunity.

When Zhuge Zhi and Zhuge Lan heard this, they glanced at each other and raised some small doubts.

Zhuge Zhi said first: "If you save your relatives and save the trouble, how can you bring your female dependents?" Moreover, my uncle was defeated at the beginning, and he was afraid that he would not be able to protect us, so he sent him back to Xiangyang. Won't Liu Biao take the opportunity to persuade us not to hit the stone with an egg? ”

This question is very simple, Zhuge Liang replied without even thinking about it:

"When I pleaded, of course, I wouldn't explicitly say how many people were going, and Liu Biao couldn't write so much detail in the release document. As for the persuasion to strike a stone with an egg...... Naturally, I have a way, but I can't say it for a while. ”

Zhuge Liang didn't explain it too much, and when it came to the art of war and military aircraft, he said that his sister didn't understand.

Zhuge Zhi thought about it for a while, but decided to believe her younger brother and didn't question it anymore.

And Zhuge Lan also thought of some hidden dangers, and then asked: "Then what if Liu Biao has no plans to feast celebrities recently?" Can my uncle and eldest brother wait? ”

Zhuge Liang frowned: "This can only be inquired about first, if there is a plan for a big banquet within a few days, it is the best." If not, you can only find a way to ask someone to create opportunities. ”

Zhuge Lan's heart moved: "Who can you trust?" Pound Gong? Or Mr. Water Mirror? ”

Zhuge Liang: "If you really can't help it, let's ask Cai Gong, he is Liu Biao's father-in-law, and he is highly respected......"

Zhuge Lan hurriedly interrupted: "You don't want to invite the little lady of the Huang family to go to her grandfather's place to be coquettish, right?" Second Brother...... I was joking last time. ”

Zhuge Liang sighed: "It's nothing, in fact, I know that Yueying has a good character and is also smart." I don't mind being beautiful or ugly, you're right, men can still take concubines anyway. ”

……

Zhuge Liang briefly discussed with his sisters, and everyone brainstormed and filled in the obvious holes a little, and then decided to implement Zhuge Liang's plan.

In the afternoon of the same day, Zhuge Liang went out of the door, went back to the city to investigate, and learned that Liu Biao had no plans to feast guests recently.

He also knew that there was only one other option.

When I got home that day, it was getting late. Zhuge Liang was uneasy, so he just lit the butter lamp, took out the scroll newly given by his eldest brother a little, and learned some arithmetic to divert his attention and relieve his depression.

Sure enough, only arithmetic can soothe his heart,

With just one cup of tea, Zhuge Liang completely figured out the "factorization" - of course, this is also thanks to Zhuge Jin's lesson plan that is really easy to understand.

Many basic mathematics textbooks in later generations directly list formulas, making people memorize conclusions such as "(X+Y)²=X²+Y²+2XY".

And for an extremely smart person like Zhuge Liang, if he directly reports the answer and does not tell the principle, it will definitely be easy to gang up and arouse suspicion.

Therefore, in the latest scrolls given by Zhuge Jin, they are all illustrated with diagrams to make the most intuitive demonstration.

For example, draw a square, specify that the side length is equal to (X+Y), and then draw two perpendicular lines on the side from the fixed point X length to divide the square into four pieces.

The area of the four blocks divided in this way is X², Y² and two XY, which add up to X²+Y²+2XY.

Taking this as an example, all other decomposition formulas, Zhuge Jin can be drawn with diagrams, and Zhuge Liang can also understand them in an instant.

Even after Zhuge Liang learned the way of thinking, he was able to deduce the decomposition method of some formulas that were not mentioned in the big brother's secret scroll, and draw inferences from each other to create complex formulas.

Finding that factorization was too unchallenging, Zhuge Liang took advantage of the victory to pursue and continued to attack the quadratic equation based on it.

This time he was finally able to warm up, and it took him half the night to figure out the main knowledge of quadratic equations.

However, this is also very impressive-for normal junior high school students, in order to take care of the scumbags, these two pieces of content will generally be repeated for half a semester, and the real students can get it in half a month.

Zhuge Liang's night is equal to half a month of being a top student and half a semester of being a scumbag.

After all this, Zhuge Liang fell asleep peacefully.

……

When he woke up the next day, perhaps because of the good quality of rest, Zhuge Liang was refreshed, his courage was doubled, and he was preparing to implement his own plan.

Coincidentally, in the morning, a servant from Huang Chengyan's family in Xiangyang came to Zhuge in a small carriage.

After the car stopped, a woman with yellow hair and thin hair who was two or three years younger than Zhuge Liang came down.

With a modified fishing rod on his shoulder and a wooden box in his hand, he didn't see the Zhuge family, he went directly to the yard, and greeted him as he walked:

"Brother Liang, I have time to fish for mandarin fish together today. I've improved your longline rod again, but unfortunately I can't pull it with little strength.

The whole set of triangles you asked me to make last time, I also asked the craftsmen at home to make it. ”

Zhuge Liang heard Huang Yueying's voice, but also helped him make up his final decision.

He hurriedly washed his face, and rarely cleaned up his appearance briefly before seeing Huang Yueying, and then opened the door and came out.

Although it is actually handsome enough not to clean up, but after cleaning up, it naturally makes Huang Yueying's heart beat more and more.

"Why is Brother Liang more handsome than usual today?" Huang Yueying was stunned for a while, holding a wooden box triangle and didn't know where to put it.

Zhuge Liang looked at the new fishing rod that Huang Yueying brought, as well as the pile of right-angled triangles, and he was also a little moved in his heart.

So before talking about business, he still checked these things very solemnly to show respect for the other party's achievements.

Since the eldest brother sent the first wave of dense scrolls more than two months ago, Zhuge Liang has successively shared some of these interesting ideas with Huang Yueying.

Huang Yueying was like-minded with him, and also helped make some things, and the two often went out together and fished with a homemade new fishing rod-

Of course, with Zhuge Liang's self-discipline, he will definitely not waste time. Therefore, they all bring books and oil-paper umbrellas, or find fish under the shade of trees, and wait for the fish to be hooked while reading books, studying, chatting and discussing, just entertaining and progressing.

The new fishing rod that Huang Yueying brought today, compared to the sample that Zhuge Jin gave him at the beginning, has improved the pontoon and counterweight, making it easier to set the depth of all hooks. Zhuge Liang really wanted to give it a try, but he didn't have time.

As for the box of right-angled triangles, you may want to find a way to make a specific top angle angle, so that you can directly use a ruler to measure the trigonometric value of the angle, without blind calculation.

Either it is the tool that Zhuge Liang used to "use the Pythagorean experiment method to measure the value of the opening number of integers" to better understand "irrational numbers".

These two things can be regarded as Zhuge Liang's own figure-outs, inferences and self-verification of the content of the first wave of mathematics textbooks of his eldest brother, and they are also the epitome of Zhuge Liang's hard work for more than two months.

At this moment, after reading what Huang Yueying helped him do, Zhuge Liang expressed his gratitude and praise politely, but absentmindedly.

But Huang Yueying was not happy when she heard it, because her intuition told her: Although Brother Liang's comments were very accurate, he was not distracted.

No matter how rational and precise a man is, if there is no emotion, a woman can hear it.

"You've got something on your mind." Huang Yueying pointed out bluntly.

Zhuge Liang also took advantage of the situation and admitted: "Actually...... I received a letter from home yesterday that my uncle was threatened by the thieves again in Yuzhang, and my eldest brother asked me to help. ”

"Then you want to leave Jingzhou? Will you come back? Huang Yueying was inexplicably worried for a while.