The green hair shows that this is a copper cannon. It is also a miracle that a copper cannon can still be left in the abandoned warehouse and not confiscated.

Ma Cheng couldn't bear the trembling voice and asked softly: "Brother Chen, where did this cannon come from?"

After thinking hard, Chen Guerrilla said: "This cannon has been around for some time. I remember it was brought from Zhejiang, and it should be a ship cannon that was taken from the pirates."

Ma Cheng knew it clearly, that's right. This is clearly a Western cannon or an excellently manufactured Western falcon cannon.

Ma Cheng suppressed his excitement and said calmly: "Wenchao, take people outside to guard."

Ding Wenchao led his personal soldiers to scatter, guarding the outside tightly, and did not dare to neglect the order to order the military yard of the ordnance room to be strictly enforced, and even a fly could not fly in.

Fang Shihong was shocked and asked, "What's wrong, don't scare me."

Ma Cheng looked at the Western falcon cannon, the foreign text on the cannon, and something hanging on the long cannon. He was stormy in his chest. What did he see in this warehouse? Gun gutters, measuring the angle of the cannon The military weapon, gun rules, and the appearance of the military school history textbook are exactly the same. Even this falcon cannon has a photo and a sightseeing sight!

This Western cannon made Ma Cheng amazed that the Western artillery tactics of this era were far beyond the Ming Dynasty. Ma Cheng received regular military academy education and knew very well what the appearance of the gun rules meant. This is the early version of the artillery elevation angle The instrument is a major breakthrough for artillery tactics, making it possible to accurately shoot artillery.

The most behind Ming Dynasty was not the art of cannon making technology, but the artillery tactics, which was a completely behind the age. I took out a solid box next to me, walked over carefully, took the gun rule from the cannon, and wiped it. The dust exposed the clear scale, and closed the box and hugged it tightly in your arms.

After getting this treasure, Ma Cheng ordered: "My gun is going to be troubled by Brother Chen to watch this cannon. Don't touch it. Today, I hope Brother Chen will keep the secrets!"

Chen Guerrilla replied in a hurry: "The last general will receive the order."

This cannon itself is not important, what is important is that its cannon aiming system is the most advanced of this era.

After leaving the camp, Fang Shihong could not help but ask: "What kind of thing is this?"

Ma Cheng said happily: "Real baby!"

Fang Shihong also knew that the matter was important and did not dare to ask again. He returned to Qinglianggu Villa and sent four personal soldiers to guard him day and night, locked himself in the room to draw pictures, and created a cannon elevation meter in Macheng. It is not realistic. Although this thing is relatively simple and rough, it is completely different with real objects. With real objects, Ma Cheng suddenly becomes clear. Making drawings is also a compulsory course in military academy, so it is not difficult to draw a structural diagram.

With this gun rule, Ma Cheng's inspiration was like a flood that opened the gate, emerging one after another.

For example, the basic knowledge of military academy students who have been fiddling with the forty-five degrees of elevation of cannons and the farthest range have also been remembered. Combined with the joint mortars that have been fiddled with for many years, a simple version of the precise shooting method of artillery was formed, and many memories were I was sorted into a text, and I filled dozens of papers with my writing and paintings. I fell asleep on the table. I couldn't hold on with my eyelids. When I woke up, it was dawn. The four personal soldiers were still guarding outside. He didn't dare to come in with his orders.

Ma Cheng carefully put dozens of rice paper and gun placing them into two boxes separately. He just locked them and then felt relieved. He looked at the ceiling again in a daze, and suddenly thought of a very serious problem, the method of teaching the cannons he compiled by his own.

, I'm afraid no one can understand this era. In the Ming army, no one should understand the mathematical concepts of elevation, parabola, and scale. It was like a pot of cold water poured on the head, and the person calmed down.

There were even fewer people in Kaiyuan Army who knew how to read, let alone understand these mathematical concepts.

Soon, I was cheered up again and thought about it. If others don’t understand, I can also open the Yuanbei Pass. One cannon after another cannon is used to debug it. It is unrealistic to get a cannon watch. It is not difficult to shoot it with a simple ruler.

, those well-trained gunners in the Kaiyuan Army can always do it just by copying them.

Although this is just a temporary solution, Kaiyuan Beiguan has become as solid as ever since.

It's rare to have a talent, Ma Cheng felt bitter in his heart. I didn't even have a talent for understanding geometry in the Ming Dynasty. If it really doesn't work, I can only cultivate it myself. But this is also a huge difficulty. Can you write a basic geometry tutorial?

The city asked himself that a junior company commander who graduated from a military academy would never be able to do it.

Fang Shihong said contemptuously: "There is geometry, what is the height of the sky, how much place is?"

Ma Cheng twitched at the corner of his mouth: "Danny!"

Fang Shihong felt insulted and said angrily: "Geometry, there is it in the study inside!"

Ma Cheng was powerless and wanted to slap him to death. If you, a playboy, had a geometry book, the sow could climb a tree and the rooster would lay eggs.

Fang Shihong stood up angrily and came back soon after, and hummed a few volumes of books on the table.

Bang, the teacup in Ma Cheng's hand fell to the ground, and there was a confusion in his mind that it seemed that he saw a sow climbing up the tree and a rooster really laid an egg.

There are still several books on the table, and the cover is clearly four large characters "Geometric Origin". Ma Cheng snatched the book in surprise, and then he felt relieved when he looked at the author. Xu Guangqi and Matteo Lima translated it together, and it was written in Twelve.

In the 35th year of Wanli in the New Year, I was like a treasure that I found, and I looked at it for a few glances and then put it away, and the textbook was available.

As for whether to go to Xu Guangqi to discuss geometry, Ma Cheng asked himself that IQ was normal. He was a big joke. He missed theories of math like Lord Xu in just a few sentences. How to explain it? Ten percent of them are going to be

Thinking of being a monster, Lord Xu was 100% able to draw out his sword, shouted that the monster appeared, and then he should be sprinkled with blood and filth, and then he should be killed and sacrificed to the heavens.

I don’t know how those time travelers made Lord Xu bow down and bow down. Ma Cheng asked himself that he wouldn’t be so stupid, and that those who can do these things are all human-headed and pig-headed.

However, Macheng was already very satisfied. The trip was very rewarding, and Kaiyuan was worry-free.

When he got better, he sincerely apologized to Mr. Fang. Mr. Fang was also a heartless person and soon grinned and laughed.

Fang Shihong also said with suspicion: "Brother Kaicheng knows how to calculate?"

Ma Cheng fooled, "I understand a little, I understand a little, I am a concubine's son and I have no hope of being in the imperial examination, so I love reading some miscellaneous books since I was a child, especially the various wonderful ideas of the country of Taixi."

Fang Shihong explained in a gentle way: "That's true. If you are interested in the imperial examination in Kaiyuan, there is no one to give me some advice. Haha, I also like to read some miscellaneous books."
Chapter completed!