This time Cao Liang was a little embarrassed, if he didn't know Ma Jun's identity before this, maybe Cao Liang wouldn't have a good impression of this weird old man, and he wouldn't bother to pay attention to him.

Cao Liang also has a strange temper, that is, he never tends to be inflammatory, and he will not take the initiative to greet him, which is also a major reason why he was very miserable in his previous life, after all, arrogant bones cannot be used as food.

But after knowing Ma Jun's true identity, Cao Liang also had the heart to make friends, after all, Ma Jun is a rare strange man and skilled craftsman, and he may be useful to Ma Jun in the future.

Therefore, Cao Liang saluted very respectfully, but he didn't know if Ma Jun was not close to anyone or if Cao Liang's previous words offended him, Ma Jun ignored him.

Now Cao Liang has nothing to do, the etiquette that should be done is also done, and the good things that should be said have been said, this old man just doesn't eat oil and salt, loves to ignore it, and is really helpless.

Fu Xuan knows Ma Jun's temper very well, saying that his surname is Ma, it is better to say that his surname is Donkey, it is purely the kind of master who does not leave, and fights until he retreats, if his donkey temper comes up, it is useless for anyone to say.

If Ma Jun could be more tactful, he would not offend so many nobles in power.

Fu Xuan said helplessly: "No." ”

turned back to Cao Liang and said, "Brother Cao, I'm really sorry, Mr. Ma is in a bad mood today, why don't you change the day and do the east in the next place, how about getting together again?" ”

Cao Liang looked at Fu Xuan's hand, holding a scroll of drawing-like things, and listened to Ma Jun's words, what drawings did he want to send to the general Cao Shuang, so he asked: "What is Brother Fu holding that needs to be seen by the general?" ”

Fu Xuan raised the drawings in his hand, and said with some triumph: "This is Mr. Ma's painstaking work, if it can be equipped in the army, it will be invincible and invincible, and it will definitely increase the combat power of our Great Wei army exponentially." ”

Cao Liang had already roughly guessed what it was, and secretly sneered in his heart, Ma Jun is a hot shaved head, what he has worked hard to research here, when he arrives at Cao Shuang, he abandons it like a shoe, and people may not even have the heart to take a look.

Ma Jun, this is a pearl secret investment.

This old man is simply a dead brain, when you were an official in the court, others disdained your inventions, and now that you are retired, it is time to live at home, be idle, and still do some research and invention here, is it useful?

Cao Liang deliberately said in surprise: "There is such an artifact, what is it?" ”

Fu Xuan said: "Stone machine." ”

"Stone machine?" Cao Liang's expression was slightly disdainful, "Brother Fu deceived me, what is the power of the stone machine, there are many equipment in the army, although the power is fierce, but it is bulky and unbearable, it is not a sharp weapon, right?" ”

Fu Xuan laughed and said: "Brother Cao, you don't know this, the stone machine made by Mr. Ma is different from those stone machines in the army, the stone machine used in the army is a single shot, and every time it takes a lot of time to load stones and throw stones, it is inefficient." Mr. Ma's stone machine, also known as the 'chain thunderbolt', can continuously throw stones, so that the enemy is unable to defend against it, and is the first weapon for siege. ”

A catapult is also called a trebuchet, and if the wheels are installed at the bottom, it is also called a catapult. The trebuchet is a long-range attack heavy weapon, mainly used in siege warfare, and also has applications when defending cities or field battles.

The original trebuchet structure was very simple, a huge lever, the long end was a leather case or a wooden basket loaded with stones, the short end was tied to dozens of ropes, when the order was given, dozens of people pulled the rope at the same time, using the principle of the lever to throw the stones.

The earliest application of trebuchets to the war was the state of Chu during the Warring States Period, when the Qin general Li Xin attacked Chu, the Chu army prepared a large number of catapults, and when the Qin army crossed the river, the stones in the sky came like flying locusts, and the Qin army was defeated.

During the battle of Guandu in the late Eastern Han Dynasty, Yuan Shao built a tower outside Cao Ying, piled up soil as a mountain, and shot Cao Ying with arrows. The strategist Liu Ye proposed to Cao Cao to design a trebuchet called the "Thunderbolt", which destroyed Yuan Jun's turret, and the situation in Guandu turned from danger to safety.

The thunderbolt designed by Liu Ye is already very advanced, and the larger the stone, the longer the range, the longer the range, the longer the trebuchet.

However, trebuchets have one of the biggest weaknesses, that is, they are bulky and have poor mobility, they can only throw one stone at a time, and if they want to achieve a good attack effect, they must prepare a large number of trebuchets at the same time.

In addition, if the enemy is prepared in advance and hangs wet cowhide on the city wall, the trebuchet's attack can be broken.

In view of this, Ma Jun set his life's learning, research on the new type of trebuchet, he got inspiration from the Zhuge repeater, using a wheel design, on a large wooden wheel, hanging a number of stones, when in use, the mechanical rotation of the wheel, you can launch the stones one after another.

Due to the increase in attack density, the enemy's defenses are stretched, and the power of the trebuchet can be maximized.

When Ma Jun was an official in the court, he wrote to the imperial court, suggesting that the trebuchet currently used in the army be improved, but the imperial court did not adopt his suggestion, and this plan was eventually shelved.

When Emperor Ming died and Cao Fang ascended the throne, it was when the general Cao Shuang was in charge, although Ma Jun had resigned from the office, he still remembered to improve the trebuchet, so he discussed with Fu Xuan, and Fu Xuan went to meet Cao Shuang with the drawings, hoping that Cao Shuang could adopt this suggestion.

Cao Liang smiled and said, "Brother Fu, can you lend me this drawing?" ”

Fu Xuan was a little embarrassed, after all, this was not his thing, how could he casually take it out and show it to others without Ma Jun's permission?

Fu Xuan looked at Ma Jun, but Ma Jun nodded to indicate that it was okay, but the corners of his eyes showed a disdainful gaze, as if he felt that it was nothing to show Cao Liang, how could these children of official eunuchs understand machinery.

So Fu Xuan handed the drawings to Cao Liang, and Cao Liang asked Afu Agui to unfold the drawings left and right, and carefully studied them himself.

Ma Jun snorted softly, obviously Cao Liang's way of looking at the drawings made him very dissatisfied, he was purely pretending to be pretending, he didn't know how to pretend to understand, this kind of person, Ma Jun has seen a lot.

Fu Xuan asked, "How is it, Brother Cao, is Mr. Ma's masterpiece exquisite?" ”

He originally thought that Cao Liang would say some words of praise, but when Cao Liang spoke, he almost choked Ma Jun half to death.

"In my opinion, you're not a stone machine!"