Liao Ying sat at the back of a few cases, just looking at the "paintings" in front of her, with a wry smile on her face. Where is this painting, it is obviously a bunch of lines pieced together with boats and ......

"Qing Zhixian's nephew, what is this?" Liao Yingzhong pointed to a drawing of a torsion stone generator with a questioning face. He could still see that it was a ship in the drawings of the three-story paddle battleship, but there was a little more pulp, and there were no wing wheels, and there was a long sharp corner under the bow, so he didn't know what it was for? But he really didn't recognize the drawing of the torsion stone machine.

"It's a stone machine." Chen Dexing lightly tapped the drawing of the stone machine, and said solemnly, "This is a military weapon, for my Great Song Dynasty, it should be on the arm of the gods!" ”

"On top of the Divine Arm Bow!!" Liao Yingzhong took a breath, she couldn't believe it, "Qing Zhixian's nephew Mo said, the divine arm bow is a sharp weapon that my Great Song Dynasty rode with steps, and this stone machine ...... Can you make cavalry? ”

Liao Yingzhong stared at the drawings of this torsional stone machine, the appearance of this stone machine is really a little strange, there is no rope for traction, I don't know how to launch the stone?

"This stone machine cannot defeat cavalry, but it can defeat infantry, can defend fortified cities, and can attack enemy ships. With this sharp weapon, our Great Song Infantry Army should be like a tiger with wings, my Great Song City should be impregnable, and my Great Song Naval Army should be able to cross the rivers and seas! ”

Chen Dexing said eloquently, talking about the benefits of this torsion stone machine, which is a bit of a salesman in later generations. But...... Having said that, he didn't pay lip service, but sought truth from facts. This torsion stone machine is indeed a sharp weapon that can reverse the military disadvantage of the Great Song Dynasty on land!

If he hadn't really been on the battlefield of this era, Chen Dexing would have taken it for granted that the biggest enemy of the Great Song Dynasty infantry was the Mongol iron cavalry that crisscrossed Europe and Asia. However, after the battle of Yangzhou City a few days ago, Chen Dexing already knew that the so-called Mongolian iron cavalry was not an insurmountable problem at all - since the founding of the Great Song Dynasty, it was under the strict threat of the northern nomads, and how to restrain the cavalry has always been the top priority of the army. A set of effective step riding methods has long been summed up. Although the infantry of the Song army still had a disadvantage against the Mongolian iron cavalry in the field, how many Song people were there? How many Mongolian talents are there? Even with a ten-to-one exchange rate, the descendants of Genghis Khan can't help but die!

If the Mongols really wanted to rely on their iron cavalry to attack the Southern Song Dynasty, after more than 20 years of war, the Mongols would probably be extinct! On the battlefield of the Mongol-Song War, it was not the Mongol iron cavalry that really put the Great Song army in trouble, but the northern Han'er who was driven by the Mongol iron cavalry! In the words of later generations, it is a traitor! Therefore, in order to keep the remnants of the mountains and rivers belonging to the Chinese nation, and to beat the Mongols out of the Central Plains, the main opponent is not the Mongol iron cavalry, but a huge number of traitor infantry troops......

And to deal with the traitor infantry army, it is of course the most ideal to use high-end and high-grade foreign guns and artillery, if you add a small cavalry and the European-style army tactics of the Napoleonic era, there is no problem in sweeping all the way to the Mongolian plateau and exterminating the Mongol race!

But where does the steel that makes foreign guns come from? Chen Dexing has studied the Song Army's ring-head knife in the past few days, it is not a steel knife at all, not even a wrought iron knife, it is a little brittle, and it is not hard enough.

Chen Dexing speculated that this may have been because the blacksmiths of the Song Dynasty did not know how to remove sulfur and phosphorus from iron ore, nor did they know how to add the proper carbon to molten iron. As a result, high-sulfur, high-phosphorus, and low-carbon iron was smelted. If the sulfur and phosphorus are removed, it can be considered wrought iron, which can have good forging properties, can create a high-quality blade, and can also be used to make the barrel of a smoothbore gun. It's just that this kind of ironmaking process reform is not easy, Chen Dexing is not a metallurgical student after all, although he understands some principles, but if he really puts the principles into practice, I am afraid it is not possible to do it overnight.

And with wrought iron, it does not mean that a smoothbore gun can be made immediately. With a smoothbore gun, it does not mean that it can immediately produce mass production and equip troops, and let the Song army learn the corresponding tactics.

So Chen Dexing simply found another way and came up with the simplest solution - torsion stone machine and iron cannon. Oh, and the Song Dynasty's iron cannon was not a musket, but a bomb filled with gunpowder! It is a bit similar to the grenades of later generations, but because of the poor quality of the **, the size of the iron cannon is generally relatively large, and it is more laborious to throw, and it is generally thrown with a stone thrower or thrown directly from the city wall. In the battle outside Yangzhou a few days ago, the Song army did not use gunpowder weapons.

According to the records in the "General Essentials of the Martial Arts" compiled by the Northern Song Dynasty, the Song Dynasty was very complex, in addition to sulfur, saltpeter (flame nitrate), carbon (bamboo ru, maru), there were also a large number of yellow wax, pine resin, clear oil, tung oil, concentrated oil and other oils, and the gunpowder produced with this formula could only be used to produce incendiary bombs instead of bombs. By the Southern Song Dynasty, the gunpowder formula had been improved, but it was still incomparable with the granular gunpowder of later generations, although it could barely produce bombs, but it seemed to be difficult to use it as a propellant. Therefore, most of these "iron cannons" that can burn or explode are thrown by stone generators.

However, the stone machines used on the Mongol and Song battlefields were all huge and cumbersome man-drawn stone generators. There was no lightweight torsion machine, which made it difficult for the gunpowder weapons of the Southern Song Dynasty to play a decisive role in field battles. However, the torsion stone machine invented by Westerners as early as the ancient Greek era can be made relatively light and used as a primitive field howitzer.

"What do you mean by this kind of stone machine is extremely lightweight, can be used in field battles, and can be mounted on a warship?" Liao Yingzhong listened to Chen Dexing's explanation, and also realized the value of the torsion stone generator with the use of iron cannons - the iron cannons can be directly thrown at the heads of the enemy infantry phalanx! Infantry battles rely entirely on dense battle formations, and if hundreds of iron cannons fall on the head of a thousand-strong Mongol and Han army, the consequences can be imagined......

"Exactly, this stone machine is not a human rope traction, but a torsional stone...... Oh, the truth is very simple, wait for me to demonstrate it to the world. ”

Chen Dexing felt that he couldn't tell Liao Yingzhong clearly, so he took down a soft bow hanging on the wall in the room, and took an extra bowstring and a feather general. Then he attached the extra string to the bow, which was a bow with two strings. He took out another feathered arrow, broke the arrow, inserted it between the two bowstrings, and turned it again and again until the two bowstrings were twisted into a twisted shape and could no longer turn, and then pressed the broken arrow on the shaft, and then twitched the shaft again so that it could be blocked by the bow, and finally suddenly let go.

"Stretch!" With a soft sound, the feathered arrow that had been broken off the arrow popped out quickly under the action of the torsion of the two bowstrings, but it was blocked by the bow, but the arrow flew forward under the action of huge inertia, and finally landed on the ground a few feet away.

"Shibo, do you understand?" Chen Dexing put away his bow and arrows and looked at Liao Yingzhong with a smile.

"Baby! It's baby...... It's a militaristic weapon! Liao Yingzhong was stunned for a moment, and then roared, and her face was full of ecstasy, as if she had seen the infantry phalanx of the Mongol Han army being blown up by countless iron cannons falling from the sky. With this sharp weapon, the battle of Lianghuai will be a success, and in the future, the western aid to Sichuan and Shu will also be a complete victory...... Qingzhi, you have made a great contribution now, who wants to take away your merit the day before yesterday, not to mention that the old man will help you make the decision, even the privy minister will come out to uphold justice! ”

Chen Dexing was stunned when he heard this, and showed an extremely surprised expression, "Shibo, what did you say?" Someone wants to take the credit of a certain family? ”

Liao Yingzhong nodded and smiled, "The old man is here for this today, but now it's okay...... With this stone machine, such villains can only bring humiliation on themselves! Qingzhi, hurry up and follow the old man to Fusi Yamen. ”