People in the Song Dynasty undoubtedly liked reading. Even in the end of the Southern Song Dynasty, people still believed that everything was inferior, but only those who were high in reading. Even if they were promoted to the common people, they would try their best to read the books of sages for a few days. Even if they did not have the talent to test their fame, it would be good to know a few more words and understand the principles of saints.

But Lu Shihu, who thinks he is well-read, really can't imagine what the relationship between shooting cannons and reading - it's shooting cannons, not building cannons. Craftsmen who make cannons can also read "Lu Ban Shu". But what book should I read when I shoot cannons? It's not "Qimen Dunjia", right?

Lu Shihu felt strange. Chen Dexing's ordinary brothers below were also questioning, but they all looked at Chen Dexing without saying anything.

"The first thing to do when shooting cannons is to calculate the calculation. Only by calculating the distance, orientation, wind speed, cannon weight, string force, angle, and parabola can we hit every shot, making our artillery army a powerful army that defeats the enemy under the command of the Sumi Gong!"

Everyone below blinked, and couldn't understand Chen Dexing's meaning at all - just aim it at it, can you just hit it? At most, test the distance again, why are there so many tricks?

"Qingzhi, I have some knowledge of mathematics and have read the Ten Books of Calculation, but I don't know what algorithm should be used for artillery?"

Lu Shihu, who was standing beside him, interrupted and asked with interest.

Although scholars in the Song Dynasty ignored natural sciences, they did not ignore them. At this time, Neo-Confucianism, which gradually became the mainstream Confucian Neo-Confucianism, also emphasized "studying things and seeking knowledge", and wanted to "understand the principles of heaven, understand human ethics, speak sages, and understand accidents". This "accident" included grass and trees and tools. Neo-Confucianism in the Song Dynasty only regarded grass and trees as the application of heaven's principles, and regarded them as the analysis and application of heaven's principles. Zhu Xi, a master of Neo-Confucianism in the Southern Song Dynasty, also had a lot of research on natural sciences, and in his works, they all wrote "Beichen Breaking", "Yao Dian" and "Shun Dian" There is a lot of research on astronomy and geography. In addition, Zhu Xi has made insights on geological fossils, denying creationism, the origin of the universe, the geocentric theory, the rotation of the earth, solar and lunar eclipses, tides, the formation of hexagonal crystals of snowflakes, the formation of rainbows, the impact of geography on climate, the origin of biology and humans, the diagnosis of pulses of traditional Chinese medicine, agricultural production structure, crop layout and specific production technology. The "Four Books and Chapters Collection" that was later designated as a science program is just a part of the Southern Song Dynasty Neo-Confucianism.

At this time, although Confucian scholars in the Southern Song Dynasty had already regarded moral articles as the first, their interest in the study of plants, trees and tools was still higher than that in the Ming and Qing Dynasties - but the mainstream thoughts of Confucian scholars and officials still regarded Confucian classics as the great way, and the rest were small way...

"Brother Lu Shi, the algorithm used by Dexing to use artillery techniques did not come from the Ten Books of Calculation, but from the countries such as Dashi, Tianzhu and Daqin in the Western Regions."

Chen Dexing replied with a smile. His previous life was a senior sailor from a professional school, and of course his mathematics was not bad. However, the mathematics in later generations all originated from the West and was not in the same line as the Ten Books of Calculation in China. Chen Dexing himself had never read the Ten Books of Calculation, and it was even more impossible to explain the mathematical knowledge he had mastered in the language and standards of the Ten Books of Calculation in later generations - this is a great question! Without years of hard work, it would be impossible to succeed. If Chen Dexing had aspiration to be a great mathematician of the Yuan Dynasty, he could do this...

"Why don't you need to count the knowledge in the Ten Books of the Sutra?" Lu Shihu was just curious and did not show any contempt. If there was any difference between Confucian scholars in the Southern Song Dynasty and Confucian scholars in the Ming and Qing Dynasties, he was not rejecting the external world, nor was he blindly arrogant.

According to Chen Dexing's memory in this life, the Song Dynasty was actually a very open country, with extremely prosperous foreign trade. Quanzhou, Guangzhou, Mingzhou, Lin'an and other places, there were many merchants from Dashi settled there. The merchants of the Southern Song Dynasty were also spread all over Japan, Goryeo, Jiaozhi, Sanfoqi, Java, Chameng, Khmer and other countries around. There were even many Song Dynasty merchants traveling to India to Dashi to do business. The Song Dynasty officials were naturally not ignorant of the external world.

Moreover, since the Song Dynasty established its country, it was a passively beaten weak country, and it was not at its peak even in the international power structure of the East Asian world. By the Southern Song Dynasty, it became a small country in a corner, so Song Confucians did not have much thinking about the Celestial Kingdom in their minds - where is the Great Celestial Kingdom in the world that pays tribute to foreign countries?

"I'm not hiding it from Brother Shi, I haven't studied the Ten Books of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book of the Book

"Oh, so that's it." Lu Shihu nodded without commenting, no longer bothering about what calculations are used to teach the military and the military to get a cannon. Anyway, the cannon is not an imperial examination. No matter how it calculates it, as long as it can be beaten, it's enough. But the question is, cannon be really used to calculate the cannon?

"You must not understand the relationship between cannon art and math?" Chen Dexing glanced at Lu Shihu with the corner of his eyes and said with a smile, "The stone throwing method has existed in ancient times, and I have never heard of math. However, the stone throwing method in ancient times is useless for field combat, and there is no way to aim. Most of them use the method of visual inspection and shooting to directly hit the city wall, so naturally there is no need to use math."

"Qingzhi, what do you mean by randomly speaking?" Lu Shihu heard another new word and asked curiously.

"Indirect aim means that the cannon player can destroy the enemy without being able to look directly at the enemy!" Chen Dexing said, "In this way, the cannon can be used later in the infantry to prevent the cannon from being trampled on by the Beiluo horse team."

"Isn't it the same as the crossbow shooting?" Lu Shihu said, "The crossbow shooting is not very accurate... If you use a stone-acting machine to shoot an enemy formation three hundred steps away, you will probably be out of bounds."

"And the enemy's formation is not a city wall, and we will not stand still and wait for the army to slowly shoot, so mathematical science must be used in field battles. In addition, the army's field battles need to pay attention to the following points..."

Chen Dexing carefully explained the difficulties of field combat of stone generators to Lu Shihu and the officers of the naval army. He did not remember any successful battles in the field of stone generators in history. This weapon was mostly used in Europe for attacks or water wars. In land field combat, the weakness of stone generators is very obvious: First, it is too bulky and difficult to move. At this time, the stone generators used on the battlefield of Mongolia and Song dynasties were all towing large stone generators, which basically had no mobility and were mostly made on the battlefield. There was no problem with this thing being used for siege, but it would not work for field combat. The enemy would not give you time to build stone generators.

Second, the threat to moving targets is not great, but no enemy will be foolishly waiting for you to slowly shoot with a stone generator. If you miss a few shots, they will have already moved. Therefore, if the stone generator wants to exert its power in the field, in addition to having a certain degree of mobility, it is a high-level artillery technique. Before the enemy responds, the most iron cannons must be bombarded into their military formation!

The third is to have a powerful iron cannon (cannonball). If it is just throwing stones, the stone generator has very limited lethality to field targets, and it is difficult to become a decisive force that can determine the victory or defeat of a battle like the artillery in later generations.

After listening to Chen Dexing's explanation, Lu Shihu took a deep breath and nodded, "I didn't expect that this opportunity to launch a stone has so much knowledge. Shihu was really open to his eyes today."

Chen Dexing knew that the other party was here to steal the sect, but he didn't care. For him, the stone generator was just the beginning, so he bowed and said, "Why did Brother Shi say this? The method of this stone generator is actually a small way, and it is not worth mentioning."
Chapter completed!