Feng Yunshan listened to Haba'ande's introduction, and was overjoyed! Hurriedly got up, approached the three of them, and asked one by one with a smile on his face. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Li Shanlan and the three of them regretted it a little. They turned their ears to what was going on outside the window, and on the spur of the moment they took a British merchant ship to Guangzhou via Hong Kong Island, only to find that Guangzhou had been occupied by the long-haired rebels. I wanted to return to Shanghi, but when I thought that it was thousands of miles away, I didn't see the "New Edition of Naturalism" compiled by Hexin and went back, which was a pity.

Thinking of those itching whimsical knowledge, coupled with Habaander's saying that Feng Yunshan was approachable, the three of them finally mustered up the courage to follow Habaander to meet Feng Yunshan, wanting to get the manuscript of "New Edition of Naturalism" compiled by Hexin.

At this moment, when they saw the leader of the long-haired rebels, his face was full of kindness, and they knew that he was also Sven's scholar at first sight, and the three of them suddenly felt at ease, and hurriedly stepped forward to bow down.

Although the three of them delved into mathematics, physics, astronomy and other miscellaneous studies, they were not nerds who only read Confucius and Mencius's articles, and they did not think that rebellion should be a heinous crime of killing their heads. In addition, the three of them usually have more contact with foreigners, especially Li Shanlan, who actually made friends with the missionary of the London Missionary Will, who also liked mathematics.

From the missionaries, Li Shanlan, Xu Shou and Hua Yufang learned about the situation in the world, and only then did they know that the country they lived in was so backward and barbaric under the rule of the Manchu Qing Dynasty. Therefore, the three of them have no intention of pursuing a career in public affairs, but only want to delve into Western miscellaneous studies, establish some educational schools and some industrial companies among foreigners, and enlighten the Chinese people.

"The three gentlemen came from afar, and they worked hard all the way!" Feng Yunshan accepted the salute of the three and invited them to take a seat.

After letting the maid serve tea, Feng Yunshan and a few people didn't speak for a while.

The youngest Hua Yufang couldn't bear it, got up and said respectfully: "Holy King, the three of us want to take a look at the manuscript of the "New Edition of Naturalism" compiled by Pastor Hexin, and I heard that it is at the Holy King's place, I don't know if I can ...... it?" ”

The other two also stared at Feng Yunshan with eager faces.

"Absolutely! However, this manuscript covers the basic knowledge of various Western subjects, and the king intends to promote it as a teaching material for the common people and schoolchildren under his rule. Feng Yunshan first covered it with his words, and chuckled: "Pastor Hexin has returned to Europe, this manuscript is the only one, if you take it, there will be no more on this king's side!" ”

As soon as the three of them heard that Feng Yunshan actually wanted to use this manuscript as a teaching material for teaching children, they suddenly felt bitter, and they were about to say goodbye, but they heard Feng Yunshan say: "If the three of you don't have anything urgent, you might as well stay in Guangzhou temporarily." It happens that the manuscript of the letter is a little scribbled, and you happen to copy the manuscript in two copies, and by the way, this king will take the copy you copied and print it for the purpose of promoting teaching! It just so happens that there are many rooms in this king's mansion, and they are a little deserted, so let's live in this king's mansion. ”

Seeing that the faces of the three of them were embarrassed, Li Shanlan was about to open her mouth to excuse herself, but Feng Yunshan waved her hand again to stop: "Everyone, please don't excuse yourself!" It just so happens that this king dog is still at the age of studying, so he will hand it over to the three teachers to teach enlightenment literacy, how about it? ”

Seeing Feng Yunshan say this, Li Shanlan had no choice but to agree.

The reason why Feng Yunshan invited the three people was because he knew something about the three people in history and knew the roots.

These three people are all pragmatic cadres of the modern Westernization movement, although they do not like to be officials, but they are still very enthusiastic about rejuvenating the country and securing the country and the rise of the nation.

Feng Yunshan asked people to clean up three rooms in the backyard of the governor's yamen office, it was a cold winter, although Guangzhou was not cold, he also bought some quilts for them, and some careful arrangements moved the three of them.

Feng Yunshan called his cheap son Feng Guifang again and asked him to meet the three teachers. Feng Guifang was taught by his mother since he was a child, he was very well-behaved, as soon as Feng Yunshan said, he knelt down to apprentice immediately, and waited for Li Shanlan and the three of them to refuse, but Feng Guifang had already finished kowtowing, and the wood was already in the boat.

The reason why Feng Yunshan arranged it this way was that he wanted to tie the three of them back to the warship of the Holy Kingdom. Now that he has become his son's teacher, as long as it spreads, it will be impossible for the three of them to be officials in the Manchu Qing Dynasty again, and even if Li Hongzhang wants to carry out the Westernization Movement in the future, he will not be able to hire these three people as his staff.

After the arrangements were made, that night, Feng Yunshan instructed the chef to make a few Su dishes, and came to Zuo Zongtang and Xu Xiangguang to invite the three of them to a banquet in the mansion, saying that it was for Li, Xu, and Hua to pick up the wind and wash the dust, and by the way, it was counted as the apprenticeship banquet of his son Feng Guifang.

Zuo Zongtang and Xu Xiangguang both happened to be from the Jinshi family, and Li and Xu were both orthodox scholars, and the five of them talked about the Manchu imperial examination, but there were many topics.

The original Feng Yunshan was just a small talent in the countryside of Huaxian County, and he was not very clear about topics such as township examinations and examinations; Hua Yufang also never liked the imperial examination articles, so the two talked about arithmetic.

"Holy King, a few days ago, I saw a missile science in a foreigner's book, which involves a parabola with a figure, and Yu Fang felt that it was very profound, and he couldn't start, but he didn't know how the foreigner could speculate the trajectory of the parabola to determine the landing location of the fired cannonball?" Hua Yufang was not yet twenty years old, and when she saw that Feng Yunshan was approachable, she forgot his identity for a while, so she expressed her confusion about her myths for more than a month.

Feng Yunshan was stunned, this Hua Yufang was so obsessed with mathematics that he thought of a well-known mathematician in China in later generations, and couldn't help but sigh secretly: The surname Hua is really a mathematician!

For the parabola, Feng Yunshan happened to remember a little bit, so he said: "This is simple, as long as you test the shell a few times in advance, and then follow a certain law, you can know where the shell lands, and through this means, you can hit the target more accurately!" After speaking, Feng Yunshan asked people to take a pen and paper, and wrote down a simple parabolic equation: y=k(x-a)?+b.

Seeing that Hua Yufang was puzzled, Feng Yunshan casually drew a parabola diagram, and then established the xy coordinate system commonly used in mathematics in later generations, and then said: "Mr. Hua, you see, if the firing point is located here, and the coordinates are set to 0 point, and then according to the distance of the target hit, and the firing speed of the artillery, you can deduce what the value of k is, that is, what the elevation angle of the gun should be!" ”

Hua Yufang stared at the figure drawn by Feng Yunshan on the paper, the same equation as the ghost drawing character written with a brush, half a sound, suddenly realized, and exclaimed: "Ah! That's true! Saint King, you are so powerful, this method called a program is really amazing! ”

At this moment, he alarmed everyone and gathered around them.

Hua Yufang danced and talked about his confusion, and then how did the Holy King draw a parabola and write an equation, which solved the problem that puzzled him for more than a month!

Zuo Zongtang and Xu Xiangguang didn't understand anything, they just thought that Hua Yufang was filming the Saint King's ass.

But Li Shanlan and Xu Shou were taken aback! Hua Yufang's confusion is also the confusion of the two of them!

On the way to Guangzhou by boat, the three of them were idle, so they discussed and argued on the boat for a long time, but they did not find a suitable way. Although Li Shanlan used two methods to deduce the approximate direction, she always calculated it based on experience, and if the distance was farther, the greater the error.

They went to the ship and asked the armed sailor in charge of the guns on board, but the sailor said that he did not know how to calculate either, only that the surveyor had measured and calculated, and the commander of the artillery gave the order for several degrees of elevation.

Li Shanlan was even more surprised, he never imagined that this long-haired leader would know these mathematical methods! This is a calculation method that I haven't even mastered!

You must know that in the whole of China today, when it comes to mathematics and arithmetic, few people can compare with Li Shanlan. And a character like the Holy King is precisely the least likely to know this mathematical thing. So, this can't help but surprise him!

Then, after a closer look at this equation, I found that it was really set up specifically to deal with this parabola. Thinking about it like this, Li Shanlan suddenly understood.

This must also be a calculation method passed down from the West, and the Holy King has learned it. However, even so, Li Shanlan admires the leader of the rebel army! He admired only learned people.

At this time, Xu Shou and Hua Yufang also understood. Only then did they understand why the foreigners' artillery could hit the target so accurately after measurement and calculation. And look at the Manchu Qing Dynasty, firing artillery purely depends on experience, but artillery does not train and test fire in peacetime, how can there be experience at all? No wonder you can't beat foreigners!

After this incident, Feng Yunshan took advantage of the situation to propose that he prepare to establish a school on Changzhou Island outside Guangzhou, and invited the three of them to teach in the school.

As early as the capture of Guangzhou City, Feng Yunshan was thinking about when to establish a Huangpu Military Academy. In his previous life, he also visited the Whampoa Military Academy on Cheung Chau Island. (To be continued.) )