Seeing the surprised expression on the second brother's face when he read the letter, Zhuge Zhi and Zhuge Lan, who were doing housework, also gathered around, with three faces crowded together to read the eldest brother's letter.
Only the third brother Zhuge Jun, who is still young, is still tinkering with new toys heartlessly.
"Eldest brother wants us to go to Yuzhang to share the worries for him and his uncle? What do you think, second brother and second sister? Liu Biao should still treat us as hostages, right? Do you want to sneak away?
Ah Liang, you go out a lot. Do you think we will be inspected if we take a boat to cross the Han River? How about you go in disguise alone? Anyway, as long as someone stays, Liu Biao will not make things difficult for us. "
After hastily reading the serious matters explained in Zhuge Jin's letter, the eldest sister Zhuge Zhi took the overall situation into consideration and thought of this first.
Liu Biao didn't have bad intentions for their family, he just wanted some protection and there was no danger in staying.
After hearing his sister's idea, Zhuge Lan was a little worried and sighed: "Sister, I'm afraid you will be self-defeating. The second brother left without saying goodbye. If we stay, we will only be under stricter supervision in the future - I don't say this because of selfishness. "
Zhuge Zhi: "I didn't say you were selfish, I just made a casual suggestion. After all, the eldest brother has brought troops. I'm afraid he will waste time waiting for A Liang."
Zhuge Liang felt that his sisters were really noisy, so he forced himself to calm down and said decisively:
"Don't be afraid! If you want to leave, of course you have to leave openly. Although Liu Biao has no ill intentions, the Kuai family and the Pang family have wanted to marry us for more than a day or two.
If I slip away alone, your situation will only become more difficult. It's not like this little thing can't be solved. How am I selling my sister? "
Zhuge Zhi and Zhuge Lan don't know much about the outside world. At this time, it is still necessary for men to reassure their families.
After listening to their brother's words, they instantly felt at ease and felt that there must be a way.
Zhuge Lan, in particular, felt a little warm in her heart - she had not cared about selling her younger brother to the Huang family's wife before, since men could still have concubines in the future.
But her brother would not sell her to Pang Shanmin, and she couldn't help but feel a flash of shame.
The two women waited quietly and no longer disturbed Zhuge Liang's thoughts.
After about a cup of tea, Zhuge Liang finally came up with an idea:
"I think our family is still in good standing. We should find an opportunity for Liu Biao to entertain celebrities and ask for his presence in public, in the name of filial piety, to win over Liu Biao.
I just said that I heard that Yuzhang was in danger again and the war situation had changed, and we were willing to rush to help my uncle. Then he showed Liu Biao a private message reporting an urgent military situation——
You don’t have to worry about the source of the letter. I’ll just use the blank silk that my elder brother gave me, stamped with the seal of Yuzhang Prefect and Pinglu Xiaowei, and imitate my elder brother’s handwriting to write it down.
Liu Biao, who is named Bajun, will definitely not want to embarrass the benevolent and filial generation in the presence of many friends, so he will let us go. "
As Zhuge Liang spoke, he pulled out a blank piece of silk with a seal from the pile of scrolls next to him.
Apparently Zhuge Jin prepared multiple plans for his brother in advance so that A Liang could act according to the situation.
Zhuge Zhi and Zhuge Lan heard this, looked at each other, and each raised some small doubts.
Zhuge Zhi first said: "If we were to save relatives and save people, why would we bring our female relatives with us? Moreover, when my uncle was defeated, he was afraid that he would not be able to protect us, so he sent him back to Xiangyang. Wouldn't Liu Biao take this opportunity to persuade us not to kill an egg with an egg against a stone?"
This question was very simple. Zhuge Liang answered without even thinking about it:
"When I begged for mercy, of course I would not clearly state how many people were going, and it was impossible for Liu Biao to write such details in the release document. As for persuading people to persuade them... I naturally have a way, but I can't tell at the moment."
Zhuge Liang didn't explain it in detail, and even his sister didn't understand things involving the art of war and military aircraft.
Zhuge Zhi thought for a while and decided to believe his brother without questioning it again.
Zhuge Lan also thought of some hidden dangers, and then asked: "What if Liu Biao has no plans to entertain celebrities recently? Can uncle and eldest brother wait?"
Zhuge Liang frowned: "We can only ask around first. If there are plans for a banquet with guests within a few days, that would be the best. If not, we can only find ways to ask someone to create opportunities."
Zhuge Lan's heart moved: "Who can you trust? Mr. Pang De? Or Mr. Shui Jing?"
Zhuge Liang: "If you really have no choice, you should ask Cai Gong. He is Liu Biao's father-in-law and he is highly respected..."
Zhuge Lan quickly interrupted: "You don't want to invite the Huang family's daughter to go to her grandpa to act like a spoiled brat, do you? Second brother... I was joking last time."
Zhuge Liang sighed: "It's nothing. In fact, I know that Yueying has good character and is smart. I don't mind beauty and ugliness. You are right, men can still have concubines anyway."
…
Zhuge Liang had a brief discussion with his sisters. After brainstorming and fixing the obvious pitfalls, they decided to implement Zhuge Liang's plan.
That afternoon, Zhuge Liang went out and went back to the city to inquire about it. He learned that Liu Biao had no plans to entertain guests recently.
He also knew that he could only take another alternative.
When I got home that day, it was getting late. Zhuge Liang felt uneasy, so he just lit a butter lamp, took out the new scroll given by his elder brother, and learned some arithmetic to divert his attention and relieve his depression.
Sure enough, only arithmetic could soothe his heart.
In just one cup of tea, Zhuge Liang completely understood "factorization" - of course, this is also thanks to Zhuge Jin's lesson plan which is really easy to understand.
Many basic mathematics textbooks in later generations directly list formulas, allowing people to memorize conclusions such as "(X+Y)²=X²+Y²+2XY".
For a very smart person like Zhuge Liang, if he directly reported the answer without telling the reason, it would definitely be easy for him to get involved and arouse suspicion.
Therefore, the latest scrolls given by Zhuge Jin all use diagrams to provide the most intuitive demonstration.
For example, draw a square and indicate that the side length is equal to (X+Y). Then draw two perpendicular lines on the side at a distance from the fixed point X to divide the square into four pieces.
The areas of the four pieces divided in this way are X², Y² and two pieces of XY respectively. The total area is not X²+Y²+2XY.
Taking this as an example, Zhuge Jin can draw all other decomposition formulas using diagrams, and Zhuge Liang can also understand them instantly.
Even after Zhuge Liang learned the ideas, he was able to deduce the decomposition methods of some formulas that were not mentioned in his elder brother's secret volume, and create complex formulas by drawing inferences from one example.
Feeling that factorization was too unchallenging, Zhuge Liang took advantage of his victory and continued to attack the quadratic equation based on it.
This time he was finally allowed to warm up, and it took him half a night to figure out all the main knowledge of quadratic equations.
But this is also very impressive - for normal junior high school students, in order to take care of the poor students, these two contents will usually be taught over and over again for half a semester, and the real students will finish it in half a month.
One night for Zhuge Liang is equivalent to half a month of being a top student and half a semester of being a bad student.
After finishing all this, Zhuge Liang fell asleep peacefully.
…
When he woke up the next day, perhaps due to the good quality of his rest, Zhuge Liang felt refreshed and more courageous, and was about to implement his escape plan.
Coincidentally, in the morning, a servant from Huang Chengyan's house in Xiangyang drove a small carriage to Zhuge's house.
After the car stopped, a thin and yellow-haired woman who was two or three years younger than Zhuge Liang got out.
He held an improved fishing rod on his shoulder and held a wooden box in his hand. He ran straight into the yard without telling Zhuge's family, greeting him as he walked:
"Brother Liang, let's go fishing for mandarin fish together today if you have time. I have improved your longline fishing pole, but unfortunately I am not strong enough to pull it.
I also asked the craftsmen at home to make the entire set of triangles you asked me to make last time. "
Zhuge Liang heard Huang Yueying's voice, which helped him make his final decision.
He quickly washed his face and briefly tidied up his appearance before seeing Huang Yueying, and then opened the door and came out.
Although he was handsome enough without cleaning up, after cleaning up, Huang Yueying's heartbeat naturally became more and more pounding.
"Why is Brother Liang more handsome than usual today?" Huang Yueying was confused for a moment, holding a wooden box of triangles and not knowing where to put them.
Zhuge Liang looked at the new fishing rod Huang Yueying brought and the pile of right-angled triangles, and he was a little moved in his heart.
So before talking about business, he still checked these things very seriously to show respect for the other party's achievements.
Since his eldest brother sent the first wave of secret papers more than two months ago, Zhuge Liang has successively shared some interesting ideas with Huang Yueying.
Huang Yueying shared the same goals with him and helped to make some things. The two often went out together and fished with their new homemade fishing rods——
Of course, with Zhuge Liang's self-discipline, he would never waste time. So I always bring books and oil-paper umbrellas, or go fishing under the shade of a tree, and while waiting for the fish to take the bait, I read, study, and chat. It’s just a good way to have fun and make progress at the same time.
The new fishing rod Huang Yueying brought today is better than the sample Zhuge Jin sent him at the beginning. It has improved floats and weights, 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 that box of right-angled triangular plates, you might want to find a way to make the vertex angles specific, so that you can directly use a ruler to measure the trigonometric function value of that angle without having to make blind calculations.
Or it was a tool used by Zhuge Liang to "use the Pythagorean experiment method to measure the value of the root of an integer" to allow himself to better understand "irrational numbers".
Both of these can be regarded as Zhuge Liang's own thinking, self-verification and inferences about the content of his elder brother's first wave of mathematics textbooks. They are also the epitome of Zhuge Liang's hard study for more than two months.
At this moment, after seeing what Huang Yueying helped him make, Zhuge Liang expressed his gratitude and praise politely but absent-mindedly.
But Huang Yueying was not happy after hearing this, because her intuition told her: Although Brother Liang's comments were very accurate, he was not careless.
No matter how rational and precise a man speaks, if there is no emotion, a woman will be able to hear it.
"You have something on your mind." Huang Yueying pointed out bluntly.
Zhuge Liang took the opportunity to admit it: "Actually... I received a letter from home yesterday. My uncle was threatened by the bandit army again in Yuzhang. My eldest brother asked me to help."
"Then you want to leave Jingzhou? Then come back?" Huang Yueying was inexplicably worried.
