The principle of the hanging tower is very simple, and it can be seen everywhere in the city.

The crane, the crane tower on the construction site, and the crane tower and pulley set are almost inseparable. They are Jiao Buli Meng's pair of good friends.

Although there is no steel crane at present, simple cranes can be made with wood. As for the pulley set, with steel at present, it is not difficult to cast it, it is just a set of live rings.

The fixed pulley is responsible for changing the direction of the force, and the dynamic pulley is responsible for saving labor. A fixed pulley and a moving pulley can save half of the force by combining a fixed pulley. Of course, this is theoretical. Two fixed pulleys and a moving pulley can save two-thirds of the force, and one fixed pulley and two moving pulleys can save three-quarters of the force. Of course, these are theoretical, but no matter what, it is certain to save labor with a pulley set. The most important thing is that the direction of the force can be changed with ropes, so that workers do not have to stand on the high scaffolding in a dangerous situation.

There were dozens of work slaves standing densely on the scaffolding more than 20 meters high. They were wearing tattered clothes and were lifting up with their hands. They were seven or eight meters long water truck keels and huge wooden boards several meters long. They didn't even have a safety rope on their bodies. As long as they slipped under their feet, they would fall down and become seriously injured or killed. In such an era of low medical standards, any damage may lead to life. Besides, a work slave. If Chen Xu was not here, the manager on the construction site would not have the intention to save it. They would throw it into the straw shed and die. If they died, they would be pulled outside and buried. No one would ask.

There were many corpses buried in the Great Wall, and I don’t know how many prisoners were exhausted in Qin Shihuang’s mausoleum. It is impossible to count the deaths of Xiu Chi Dao and Shi Dao. In this barbaric and primitive era, human lives... are not worth much.

But in Chen Xu's view, all lives are worth cherishing and cherishing, unless they are extremely guilty, these work slaves are not guilty, but just bad lives.

It took twenty minutes for Chen Xu to tell Hu Kuan in detail the tower and pulley set. Although Hu Kuan was confused about the principle that pulley set could save effort, he had no doubts at all, because the Marquis never talked nonsense. The Marquis said that saving effort was naturally to save effort. So Hu Kuan yelled to stop the installation project and then go to the office design drawings. Chen Xu also stood up in dizzy heading to the smelting workshop. Today's main task was to make muskets.

In the smelting workshop, we found Ma Gan, Gong Shusheng and several craftsmen who were good at casting. Chen Xu took out a few drawings and explained them carefully. Then he looked at several people and asked, "Do you understand?"

"Mr. Marquis, it is not difficult to cast this pipe. You said that you pulled out the thin steel wire and twisted it into a spring. I have never done this before. I don't know how to start. The steel is extremely hard and not as soft as twine!" Gong Shusheng, as the chief engineer of the smelting workshop, said with a wry smile.

"Actually you are right. Wire drawing is actually similar to spinning wire, but the material used is steel and silk thread. First, cast an anvil with fine holes with high hardness. When the steel juice has not completely solidified, use steel pliers to pull out a thin head and clamp it into the small hole of the anvil. The other end makes a spinning wheel like a spinning wheel. Then, after rolling, the wire should be pulled out. The middle may involve quenching and other processing processes. Then wrap the wire on a thin iron rod under heating. Use steel pliers to cut it with steel pliers according to the length required to get the spring. However, it involves the size, length and strength of the spring. It requires repeated trials to succeed. Now you can first use the forging method to create an extremely thin steel wire, and then wind it into a spring. I will do the test first, and then these parts. This is the trigger, this is the hammer, this is the snapping and fixing device for installing the spring..."

The combing gun is just a device to verify the launch method and power. The ultimate goal is to create a flintlock musket. The principle is not difficult, but the difficulty lies in the manufacturing. Because the flintlock musket seems to have a simple structure, but the excitation method is a complete set of linkage devices, triggers, springs, hammers, and gears. Each size must be very strict, and accurate to the millimeter level to achieve the required effect. Moreover, these are not strictly theoretical support, which was completely imagined by Chen Xu out of thin air. Although Daqin also has very strict manufacturing technology and skillful craftsmen, facing this complex machinery, although the craftsmen all seemed serious and serious, the inner chaos in their hearts was the same as Chen Xu's state after waking up after crossing the journey. There was no no no, but even more confused.

In Chinese history, the use of firearms began in the Song Dynasty and continued to develop until the emergence of flintlock muskets in the Ming Dynasty. It took hundreds of years during this period, and the application of gunpowder and steel has become very popular. In addition, it has been continuous contact with Western civilizations that some people have gradually improved and created more powerful flintlock muskets. At present, the Qin Dynasty has never seen even gunpowder. It has been the past one or two months since the appearance of steel. The hot forging technology has just been learned. If you discuss this complex mechanical structure with them, you actually feel like you are looking for abuse by yourself.

After staying in the iron smelting workshop and the blacksmith shop for two hours, Chen Xu came out with a dark face, and then he was too lazy to continue inspecting the construction site, so he got on the carriage and went straight back home.

The civilization gap created by more than two thousand years of time and space is too big. Chen Xu talked for half an hour just by making and constructing a spring, and several craftsmen were still confused. As for the trigger, hammer, gear, fire door and gun barrel, Chen Xu could only force them to strictly follow the drawings he designed. As for the effect after creation, he could only pray to the old master Taiyi and various gods and Bodhisattvas to bless him.

Everything is easy to remember and difficult to do, it is difficult to start, difficult to end, and difficult to end.

Difficult! Difficult! Difficult! Difficult!

This is Chen Xu’s most profound experience at the moment. This has nothing to do with academic knowledge, but is only closely related to the level of civilization development in this era. Compared with the craftsmen of Daqin, this musket is like a few clues when he got the structural description of the Interstellar Gate. He may have some clues, but he was definitely confused for a long time. Therefore, if Chen Xu now said the structural principles of laser guns and electromagnetic guns, for the craftsmen of Daqin, it would definitely be the scientists of later generations who got the structural description of the two-way foil level weapon, and would be confused to death.

Therefore, after Chen Xu returned to the city, he decided to put down the musket for the time being, so that he could not stand up to commit suicide before the gun was done. After all, he had just invented steel and stirrup saddles, which was enough to make Daqin's technology ahead of the entire earth civilization for hundreds of years. Even without firearms, Daqin could almost sweep the entire earth. This is the suppression of advanced civilizations. If he could be equipped with 100,000 new pawns, the rest empire, the Roman Republic, the Carthage, and the Macedonian Empire, they were all slags and could be crushed all the way.

But no matter what, once Eastern and Western civilizations collide, the result will inevitably be the integration and spread of civilizations. The saddle and stirrup will soon be learned by other Eurasian civilizations, because the structure is too simple, and the advantage of the Qin Dynasty will inevitably be unable to be retained in ten or twenty years.

Therefore, a higher-level technical reserve of firearms is necessary. To make the Qin Dynasty dominate the earth, just like the Americans in later generations, it must have enough reserves for at least fifty years of technological advantages to form absolute suppression with technology. The first aircraft carrier that China later made efforts in later generations is theoretically similar to the US Independence aircraft carrier. The Independence was built after the end of World War II, more than half a century earlier than China's first aircraft carrier. This is the technological gap.

When China began to study the moon in later generations, Americans had already begun to study Mars, and the Mariner probe had already flew out of the solar system to truly travel around the universe.

This is the gap. As the saying goes, one step is fast, China has been lagging behind since the Qing Dynasty, and has been behind, leading the ancient civilization two thousand years ago. It has to do everything possible to endure humiliation and pursue the pace of Western civilization. After half a century of development, various overtakings are rampant, and various achievements are complacent, but only those who understand can understand that after decades of catching up, the gap between China and the United States has not narrowed too much, because when China has the first conventional-powered aircraft carrier, the United States has eleven of the world's most advanced nuclear-powered aircraft carriers. If China wants to build eleven of the same nuclear-powered aircraft carriers, it will take at least thirty years to put aside technology. Thirty years later, the United States has probably developed a spacecraft that can fly to Mars. In other words, the United States' technology is not the same era as other countries on Earth, just like Chen Xu and the current Daqin.

But Chen Xu did not want him to repeat the history of China's later generations. He decided to use the power of Qin Shihuang, the emperor of the ages, to completely orientalize the earth's civilization with the help of Qin's force. The free and democratic earth scum like the United States must be stepped on and not allowed to appear. Moreover... Chinese people are absolutely not allowed to take the English test for CET-4 and CET-6. What is TOEFL IELTS is even more impossible. Earthlings must speak Chinese. Only Chinese is the most beautiful and authentic human language, and foreigners must pass the exam before they can become officials. The first question of the exam is tongue twister, the bench is wide, the shoulder pole is long...

"Marty, Marquis~~"

Just as Chen Xu was sitting in the carriage and shaking back home, all kinds of strange thoughts rippling around in his head, a quick voice woke him up.

"What's the matter?" Chen Xu lifted the curtain and saw a guard in the mansion riding a horse to meet him.

"Marty, Princess Huayu is here and has brought a lot of ingredients. Manager Chen asked you to go back home quickly!" The guard said in a sweaty head.
Chapter completed!