The compass is a legendary artifact. It is said that in the wilderness era, the Yellow Emperor and Chi You were at war. The fog was thick and it was difficult to tell the direction. The Yellow Emperor ordered craftsmen to build a compass. It was with the compass to guide the direction that the Yellow Emperor defeated Chi You.

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Since it is a legend, there must be no real objects or drawings. Once in the court, Gao Tanglong, a regular servant of Sanqi, openly declared that the story of Compass Naoko was nothing but a myth and legend compiled by predecessors.

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Ma Jun refuted it at first, thinking that the compass was clever, but it was not impossible to build it.

General Qin Lang also sneered and said, "Your husband's name is Jun, and his courtesy name is Deheng. Jun is the model of an appliance. Heng can determine the weight of an item. If there is no certain standard for the weight, can it be used as a model?"

Because of this, several people had a heated argument, which lasted until Emperor Ming arrived. Cao had not seen the real thing, so naturally he was leaning towards Gao Tanglong and Cao.

Ma Jundang expressed his willingness to create a real object to settle this controversy.

Later, Ma Jun devoted himself to research, studied hard, and finally used the structural principles of differential gears to create a compass. Facts speak louder than words, and Ma Jun slapped some ministers in the DPRK and China in the face with his tangible results.

The compass made by Ma Jun was so exquisitely constructed that no matter what the circumstances, the direction of the wooden man's finger on the car would always be south, which would never change. All the civil and military officials in the dynasty were amazed, and from then on the whole world admired its ingenuity.

This is a difference.

The rollover was invented as early as the late Eastern Han Dynasty, but its structure was heavy and its operation was complicated, so it did not become a useful tool for water conservancy and irrigation for a long time.

When Ma Jun was working in the imperial court, his salary was not much, so in his spare time, he set up a garden as land and grew some grain and vegetables to supplement the family income.

However, Ma Jun's vegetable garden is a highland. Although it is adjacent to Luoshui River, it cannot be irrigated. So Ma Jun improved the overturned truck and made it into a keel waterwheel. According to historical records, the body of the keel waterwheel modified by Ma Jun was made of three panels.

It is formed into a rectangular long trough, with a sprocket on each end of the trough, and the keel blade is used as a chain, passing through the long trough; the body is tilted on the water's edge, with the lower sprocket and part of the long trough immersed in the water, and the sprocket on the shore is

Driving wheel; the shaft of the driving wheel is long, with four crutches at both ends; a person leans on the frame and steps on the crutches to drive the upper sprocket. The blades scrape water along the groove and rise, and discharge the water to the end of the groove.

Then it returns to the water along the top of the long trough. In this cycle, the water is continuously sent to the shore. The rollover cart made by Ma Jun is light and labor-saving, and can be operated by children. "It is a hundred times more ingenious than ordinary ones." People in Luoyang rushed to imitate it and it was widely used.

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The keel waterwheel was still widely used in rural areas until the 20th century. An invention that could be used for nearly two thousand years and benefit hundreds of millions of farmers, Ma Jun was indispensable.

These are two differences.

Once someone presented a set of puppet plays to Emperor Ming. They were well-made and lifelike. However, the only regret was that the puppets were dead and could not move. No matter how exquisite the workmanship was, they would become boring after watching it a few times.

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Cao then asked Ma Jun if there was any way to make the puppets move. Ma Jun gave him a positive answer, and Cao Dayue ordered Ma Jun to modify them.

Others may find such a difficult task unbelievable. The wooden man is already dead, so how could he move? Many ministers who were at odds with Ma Jun were waiting to see his joke and wait for him to be punished by the emperor.

But Ma Jun once again slapped everyone in the face. He successfully created the Shuizhuan Baixi. He made a motive wheel out of wood and pushed it with water power to rotate through the transmission mechanism. In this way, all the wooden figures on the upper floor were

They are all moving. Some are playing drums, some are playing flutes, some are dancing, some are playing swords, some are riding horses, some are doing handstands on ropes, and there are hundreds of official offices. There are really endless changes. And these wooden figures come and go.

The movements are free and extremely complex, and the level of ingenuity is unmatched by the original puppets.

Cao Long was very happy and gave Ma Jun many rewards. This is the third difference.

Ma Jun was far ahead of his ancestors in the field of mechanical invention. Among inventors of his generation, only Zhuge Liang, the Prime Minister of the Shu Han Dynasty, could compare with him.

But what makes Cao Liang sad is that people in this era have great contempt for craftsmen, and the status of craftsmen is also extremely low. Ma Jun has only achieved the highest level of service in his life. This is just a fifth-grade petty official, which is equivalent to

He is a handyman working in Shangshu Province.

Ma Jun had superb skills, but no one valued him. He was not in a position suitable for him, such as the Ministry of Industry, and all his talents were wiped out.

The keel waterwheel and the loom made by Ma Jun can be regarded as inventions that benefited the public. The compass wheel and the water-turning trick are clever, but they are just playthings to please the emperor and have almost no impact on social progress.

Too much value.

At the same time, Zhuge Liang was able to apply his inventions and creations to the military. The wooden ox and the flowing horse solved the problem of transporting grain on the Shu Road, and the Zhuge Liannu, a big killer, improved the combat capability of the Shu army, making it possible for those who did not have an advantage in military strength.

The Shu army has been able to maintain the offensive momentum.

Zhuge Liannu's most famous achievement was to kill Wei General Zhang, which made Zhuge Liannu's name famous all over the world.

However, Ma Jun disagreed with this. The Wei army had a captured Liannu. After Ma Jun saw it, he thought that although Zhuge Liannu was very sophisticated, it was not perfect. If he could improve it, it would be at least five times more powerful.

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However, the rulers of the Wei State ignored Ma Jun's proposal. In their eyes, these skills were just some bizarre techniques and could not influence the course of the war.

This can not but be said to be a kind of sadness for Ma Jun. He has all his abilities, but has no place to use them.

Therefore, Ma Jun also became disheartened. Before he reached his sixtieth birthday, he took the initiative to take up his official position, retired to the countryside, closed his door to thank guests, and did not interact with the worldly people.

Only Fu Xuan was full of praise for Ma Jun's talent, and he became one of the few people who could freely enter and leave Ma Jun Villa. Therefore, despite the age difference between Ma Jun and Fu Xuan, they were close friends who had known each other for many years.

Friends.

Therefore, although Cao Liang bowed sincerely and saluted, Ma Jun still had an indifferent look on his face, as if he was rejecting people thousands of miles away.

Fu Xuan hurriedly smiled and said to Ma Jun: "Cao Ziming is the Marquis of Gaolingting and the son of the heroic cavalry general Cao Yan. I have always admired you sir. You two are very close to me."

Ma Jun did not change his attitude because of Cao Liang's clan status. On the contrary, he became even more disdainful. He ignored Cao Liang at all and instead urged Fu Xuandao: "You... just leave this matter alone and hurry up."
Chapter completed!