In the southwest of Yanshi County in the east of Luoyang City, the piece of land close to Luoshui is the grange of Cao Yanjia.

This land is about 1,000 acres, it stands to reason that Cao Yan's identity as the Marquis of Gaoling Pavilion will not be able to divide such a large piece of land in any case, but Cao Chun has followed Cao Cao to fight for many years, and has made outstanding achievements, after Cao Chun's death, Cao Cao was extremely sad, in addition to letting Cao Yan attack the Marquis of Gaoling Pavilion, he also deliberately rewarded Cao Yan with this fertile 1,000 acres of land in the east of Luoyang City.

Now it is the busy season of spring, the tenants are busy with spring plowing and sowing, and the ploughing cattle are crisscrossing between the fields, which has a very idyllic feeling.

Cao Liang took Fang Bu and Afu Agui to gallop along Luoshui, Cao Liang almost never came to the Grange a few times, and he didn't know the location of the Grange at all, but Afu Agui often came and went, and was very familiar with this area, with them leading the way, Cao Liang soon came to Caojia Grange.

Along the way, Cao Liang was still very worried about whether Ma Jun arrived early, he didn't have the steward of the ward grange before, in case Ma Jun was closed, with the old guy's temper, wouldn't he have to be angry?

Sure enough, as soon as he arrived at the intersection in front, Cao Liang saw a carriage coming from east to west, Cao Liang quickly jumped off the horse and stood on the side of the road to see if it was the Ma family's car.

The carriage was draped with curtains, and the people inside could not be seen at all, and when he saw someone blocking the way, the coachman pulled the reins, and the carriage slowed down.

"Dare to ask, is the horse sitting in the car?" Cao Liang asked.

Before the coachman could answer, with a "snap", the curtain of the carriage had already been lifted, revealing an angry old face, with a gray beard still curled, staring at Cao Liang with big eyes, who is not Ma Jun?

"Good...... Good boy, there's ...... Is there such an old man as you? Ma Jun said angrily.

After Cao Liang left, Ma Jun immediately started to draw a drawing of the counterweight catapult, as if the ditch that had been blocked for many years was suddenly unblocked.

Although Cao Liang provided him with a minimalist sketch without any details to speak of, this counterweight-type structure, to put it bluntly, is a layer of window paper, and with Ma Jun's years of research in the field of machinery, it is almost instantaneous.

Ma Jun spent his life improving and researching catapults in many aspects, but due to the limitations of the times, Ma Jun's research has indeed entered a bottleneck.

Cao Liang's small mention immediately made Ma Jun suddenly brightened, and it was a solution to the problem that had plagued him for many years.

Ma Jun almost never sleeped, and for two days in a row, he drew the drawings of the counterweight catapult.

Of course, this is just a simple drawing in theory, want to really build a counterweight catapult, but also need to carry out physical research, combined with the actual situation, the specific size of each component to carefully quantify, Ma Jun knows that behind closed doors can not make real things, only the combination of theory and practice, it is possible to build a perfect machine.

And this research and development requires a lot of money, even in the future, the research and development of any product will consume a lot of manpower and material resources, and only after the real mass production, the cost will be reduced.

Ma Jun was destitute, and he was powerless to build the prototype of this catapult, but fortunately, Cao Liang's family was rich, which could be regarded as solving his worries.

Therefore, as soon as the time agreed with Cao Liang arrived, Ma Jun couldn't wait to rush to Cao's Grange with the drawings.

But to Ma Jun's disappointment, Cao Liang did not show up, and the steward of the Grange knew nothing about it and did not pay much attention to him.

Ma Jun, who had a bad temper, was very angry, thinking that Cao Liang was playing with him, and in a fit of anger, he almost tore up the drawings he had just drawn.

However, fortunately, Ma Jun thought about it, and he was really reluctant to tear it, so he was ready to go home.

At this time, when he bumped into Cao Liang, who was late, Ma Jun was angry and stammered.

Cao Liang knew that he was at a loss, and he was making a mistake and making an apology, so he finally coaxed Ma Jun to turn around and came to the grange with him.

The steward of the grange, surnamed Niu, was a middle-aged man in his forties, and when he saw Cao Liang coming, he stepped forward very earnestly to greet him, and his attitude was extremely respectful.

Joke, he is the steward of a grange, although he is in charge of hundreds of tenants under his hands, but after all, he is still a slave of the Cao family, Cao Liang is the identity of the young master, and he will inherit the Gaoling Pavilion Marquis in the future, in terms of status, one is in the sky and the other is underground, does he dare not stutter?

Cao Liang snorted lightly and said, "Steward Niu, you are so bold, this Mr. Ma is my honored guest, and you actually let him eat behind closed doors, you are majestic enough." ”

Although Ma Jun didn't say it, Cao Liang had already guessed that the Grange steward's attitude towards Ma Jun was not good, and if the Grange steward treated him politely and settled Ma Jun well, he would definitely not be so angry.

The cow steward was dumbfounded, just a young man in a green coat and a shabby old man came to the grange, the cow steward didn't pay attention to it at all, and sent him away in a few words.

This old guy who can't speak well, the loess is almost buried in his neck, and he still has a friendship with the young master, and the cow steward has a look of disdain, so naturally he won't let him in.

Unexpectedly, he was really a guest invited by the young master, and the cow steward was dripping in cold sweat, and hurriedly apologized with fear.

Ma Jun was still angry, when he became an official, he was also a dignified five-grade official, and he was actually despised by a slave of the Cao family.

Cao Liang smiled and quipped: "Mr. Ma, don't complain that people look down on people, you can change your clothes when you go out, put on your official uniform, and ensure that no one dares to underestimate you." ”

Ma Jun snorted coldly, put his hands behind his back, pouted his beard, and looked arrogant.

Cao Liang turned back to Steward Niu and said, "You guys, don't look good, this Mr. Ma is two grades higher than me in the middle of the court." ”

Steward Niu was stunned, such a shabby-looking old man was actually a five-grade official of the imperial court, which was really beyond his expectations, it seemed that he was really unseemly, and the sea water was incomprehensible.

He repeatedly apologized, but fortunately, the young master had no intention of pursuing it, and finally secretly breathed a sigh of relief and secretly rejoiced, but he secretly swore that he would never dare to judge people by their appearance easily in the future.