Ming Zuo

Chapter 47 Declaration
Xu Ruolin was actually a good teacher. Seeing Hou Fangyu's mistake, she immediately pointed it out.

"Oh, didn't I tell you. If the power and potential are the same, they are indistinguishable. It's a shame that you boast of being smart, and you don't understand such a simple truth."

Zuo Menggeng was a little confused.

What kind of power, power, what kind of stuff?
But looking at the things on the paper, they are very familiar.

It turned out that what Hou Fangyu and Zhang Lingxi were calculating was the area of ​​the dam.It's just that the whole article is full of traditional Chinese characters, and Zuo Menggeng is dizzy when he reads it.

It is estimated that the same is true for Hou Fangyu, and he doesn't understand it after a long time.

Zuo Menggeng couldn't stand it any longer, he took the pen from Hou Fangyu's hand and drew a trapezoid directly on the paper.

"It's very easy to calculate this shape. You see, you just need to add the upper base and the lower base, multiply by the height and divide by two, and you get the area. If you have trouble writing like this, you can use this instead."

Zuo Menggeng wrote down the trapezoidal calculation formula with a few strokes on the paper, S=(a+b)×h÷2.

The neat and tidy formula is straight-forward to everyone who sees it.

"Brother Zuo, what is this?"

Hou Fangyu is thirsty for knowledge.

Zuo Menggeng is not troublesome to teach.

"This is read as Aisi, which represents the area of ​​an object..."

When Zuo Menggeng said the meaning of each letter, Hou Fangyu and Zhang Lingxi immediately remembered it.

They liked the addition, subtraction, multiplication and division symbols even more, since calculations became intuitive.

According to the method taught by Zuo Menggeng, they calculated the result almost in the blink of an eye.

"The big brother of the Zuo family is so talented that he can come up with such an ingenious algorithm."

Zhang Lingxi followed suit.

"It's said that the Zuo brother's martial arts are unparalleled, but I didn't expect math to be so good."

When Xu Ruolin saw that she had been teaching for a long time without teaching, Zuo Menggeng became sour in her heart.

"Hmph, this is just a Westerner's calculation method."

The little woman looked so cute and jealous, Zuo Menggeng couldn't help laughing: "Since you know, why don't you teach them?"

Xu Ruolin raised her head and said proudly: "I am teaching them my Chinese calculation method. Yaya said that Westerners' algorithms are exquisite, but the things of our ancestors are not bad."

Oh, I didn't realize that Xu Guangqi and Xu Ruolin were still nationalists.

Zuo Menggeng asked, "Then the method you teach is convenient?"

He pointed at the words on the paper, leaving Xu Ruolin speechless.

In the end, I had no choice but to say one sentence.

"Don't you want what the ancestors left behind?"

Zuo Menggeng laughed again.

"The things left by the ancestors are not calculated like this. Since there is a convenient way, why do you have to choose the distance?"

Zuo Menggeng is different from ordinary people, and there is no stubborn distinction between Hua and Yi.

The things in this world, in his view, can only be divided into whether they can be used or not, whether they are good or not.

As long as it is easy to use, it will be used directly.

I use it is mine.

This is military thinking, everything starts from reality.Only consider the result and don't care about the rest.

The wealth of mathematics left over from ancient China is countless, is it a treasure?

of course.

Is it worth learning from?

Certainly worth it.

But since the knowledge left by the ancients is the same as the knowledge passed down from the West, but the method of description is different, how should we choose?

Of course, what is convenient to use.

The beauty of Chinese characters is unparalleled in the world.Only in mathematics, it is a real pit.

After all, after reading a large paragraph of text, it is necessary to evolve into a specific calculation mode in the mind before the calculation can be performed, which is time-consuming and labor-intensive.

Xu Ruolin couldn't say enough about Zuo Menggeng. She looked at the calculation formula again and couldn't help but say, "Your algorithm is similar to what Grandpa Guo Jujing wrote. It's just that the symbol is slightly different, why?"

Zuo Menggeng thought about it and understood.

"The symbol used by priest Guo Jujing should be in Latin. I wrote this in English."

"English?"

"In the sea to the northwest of Folangji, there is an island country called England. Now it is on the eve of a great change. Once it succeeds, its country will surely prosper, and it is possible to dominate the world. The language used in its country is called English. And these are the English letters."

In fact, there is almost no difference between the Latin alphabet and the English alphabet. If Xu Ruolin is not proficient in Latin, she may not be able to tell.

Zhang Haogu, Liu Yiyuan, and Huang Zongxi all came together and looked at these strange symbols curiously, feeling quite fresh.

Liu Yiyuan was still unconvinced.

"What kind of country do you think Britain can dominate the world? Even barbarians dare to compete with me in China?"

Zuo Menggeng's face was solemn.

"The world is very big, Brother Liu must not have a proud heart. I think he is a barbarian, vulgar and backward. But now Liaodong is fighting fiercely, and the artillery against the Eastern invaders are all made by Folangji. The sharpness of these Westerners' firearms has already Above my China."

No living facts work.

The fact that Daming bought the Folang machine gun and imitated it, and also killed the slave chief, was widely publicized and known to everyone.

When everyone heard it, they felt inspiring and victory was in sight.

However, at this time, Zuo Menggeng interpreted it from another angle, and everyone's heart was immediately clouded.

Seeing that everyone was in a bad mood, Huang Zongxi couldn't help but comfort him: "You don't need to worry, thinking that the Western countries are far away, how can they offend China?"

Since talking about this matter, Zuo Menggeng will destroy all their luck.

"Brother Taichong, please don't think like this. Are there still few Folang machines in the Ming Dynasty? The island opposite Fujian is also occupied by red hair fans. If these Westerners have bad intentions , the disaster is as great as that of the Donglu."

Huang Zongxi still felt that Zuo Menggeng was exaggerating.

"I have seen those people from Fanbang as brothers, but they are only small boats, drifting at sea, how can they have the ability to invade China? Besides, China is vast and vast. If these barbarians can come ashore, they will definitely come. No return."

Everyone was just a little overjoyed by what he said, and they were immediately chilled by Zuo Menggeng's cold water.

"If the Western countries really have unruly intentions, why would they go ashore? As long as the naval guns stop at the seaside of Tianjin Wei, Nanjing City, Songjiang Prefecture, Fuzhou Prefecture, and Guangzhou Prefecture, we can't live any longer?"

The atmosphere instantly dropped to freezing point, and everyone looked solemn.Thinking of the picture described by Zuo Menggeng, his heart throbbed in despair.

Zuo Menggeng's voice was loud and loud, like Huang Zhong Dalu, inspiring people.

"In the past, Qin Shi Huang built the Great Wall to defend against the barbarians. Is it possible to build a Great Wall along the sea to prevent disasters from coming from the sea? However, with the benefits of artillery, can the wall be able to stop it? If not, what should we do?"

"I think that today I, China and the West, have their own advantages and disadvantages, and I have not fallen behind. It is time to work hard, strengthen my muscles and bones, use my claws and teeth, set sail on the sea, and compete with other countries in the world. The sun and the moon are all shining. My Chinese territory is the only one. At that time, not only do we not have to worry about Westerners attacking from the sea, it will be a great blessing for us not to attack him."

The blood of a group of people was boiling, and they couldn't help but lose their breath, but they couldn't wait to act immediately.

On the contrary, Huang Zongxi, who had experienced this, was full of sighs.

"It's difficult. Now in this court, internal and external troubles can't be eradicated, so what is the point of fighting against the sea? Besides, Pianfan can't go to sea, and Zu Xun is like this, and it breaks the wings of my Chinese people."

Thinking about the current situation of Daming, everyone's mood dropped again.

Only Zuo Menggeng was unmoved, and what he said seemed to be unintentional, but he was sharp.

"After we clean up the mountains and rivers, let's make calculations."

In the small house, various emotions spread.

Liu Yiyuan looked at Zuo Menggeng, his heart was beating wildly, the feeling of peeping through the truth made him a little confused.

Huang Zongxi clenched his fists tightly, his face flushed red, and he looked eager to try.

Hou Fangyu elf's strange eyeballs were rolling, wanting to shrink his head and jumping up again, his tangled appearance was quite happy.

Zhang Lingxi clapped his hands and looked up at Zuo Menggeng, his eyes were full of stars, his admiration was beyond words.

Xu Ruolin looked at him inquiringly, her eyes were deep, and the many words of Zuo Menggeng over the past few days were gathered in one place, which actually increased her confidence.

Zuo Xianmei covered her mouth in fright, and thoughtfully advised her brother that it was okay to be young and old, but she was afraid of breaking the rules of etiquette.Only the feeling of fear and fear, I do not know who to tell.

Zhang Haogu had a bitter face, only the topic on the paper in his eyes.After watching for a while, grinning, reluctantly giving up.

As for what Zuo Menggeng said, he didn't take it to heart at all.

"Yo, what are you doing?"

Zhou You walked in and saw the strange atmosphere, so he couldn't help asking.

The others were speechless and did not dare to look up.

Only Zuo Menggeng was magnanimous and looked directly at him.

"We are discussing to clean up the mountains and rivers."

Zhou You was stunned for a moment, then looked back and suddenly smiled.

"For such an intense matter, my virtuous brother should bring me."

Zuo Menggeng laughed and was very happy.

"Come, Sigui brother, I will introduce you to an old friend."

He pulled Zhou You to Huang Zongxi.

"This is the son of Huang Bai An Gong, Huang Zongxi and Huang Taichong."

"This is the son of Zhou Hengtai, who travels around Zhou Sigui."

When the first six gentlemen meet the descendants of the latter seven gentlemen, it is really a thunderous fire.

Zhou You and Huang Zongxi held each other's hands with tears in their eyes.

"Brother Zhou, congratulations!"

"Brother Huang, rejoice!"

(End of this chapter)