My subjects are too rebellious!

When these words were spoken, the craftsmen looked at each other with surprise and curiosity in their eyes.

In their opinion, how can a vehicle move on its own without horses or human power to pull it?

At this time, Qin Chuan took out an exquisite drawing from his sleeve. It was the Dongfeng truck design drawing he exchanged from the system.

He slowly unfolded the drawing and showed it to the craftsmen, explaining in detail every detail and construction principle on the drawing.

The craftsmen gathered around and looked at the drawing carefully.

"This map is a divine object I have obtained. It contains the secret of building a car. You must study it carefully and comprehend its essence before you can build such a divine car."

"I know this is not an easy task, but I believe that with your wisdom and unremitting efforts, you will succeed."

After hearing this, the craftsmen became more confident.

Qin Chuan then took out another drawing.

"Gentlemen, this is the blueprint of the steam engine, the core of the driving mechanism."

"I know that this technology is too complicated to be achieved by ordinary people, but I believe that with your superb skills and unremitting pursuit, you will be able to make it a reality."

The craftsmen took the design drawings, and their eyes sparkled with unprecedented light.

Qin Chuan divided 5,000 top craftsmen into two independent and complementary teams, each with 2,500 people.

One team focused on researching and manufacturing Dongfeng trucks, while the other team devoted itself to the research, development and manufacturing of steam engines.

Such division of labor not only improves work efficiency, but also promotes in-depth exploration of professional knowledge.

........

Two thousand five hundred craftsmen gathered together, dressed in coarse cloth and holding hammers, pliers and various tools.

The engine, as the core component of Dongfeng Trucks, has a particularly complex and challenging manufacturing process.

In ancient times, when there was no assistance from modern machinery, craftsmen had to rely on pure manual methods to forge cold pieces of metal into precise mechanical structures.

They first drew precise sketches of each component based on the dimensions and proportions on the design drawing, and then selected high-quality iron ore for smelting and forging.

During the smelting process, the furnace fire burns fiercely, melting the iron ore into hot molten iron.

The craftsmen skillfully operate the bellows and tongs to pour molten iron into special molds, and then take out the blank after it cools and solidifies.

After preliminary grinding and trimming, these blanks become the prototypes of various engine components.

Next comes the more elaborate processing stage.

Craftsmen use files, grinding wheels and other tools to carefully carve and polish the blanks, striving to ensure that every detail meets the requirements of the design drawings.

They carefully adjusted the size and shape of each component to ensure that they could be assembled together seamlessly.

The craftsmen devoted a lot of effort to the manufacture of the engine's core components, the cylinder and piston.

They used high-temperature resistant metal materials such as bronze and, through complex casting and forging processes, produced cylinder blocks that could withstand high temperatures and high pressures.

The piston is made of lighter but strong enough wood, and a layer of lard is applied on its surface to reduce friction.

Craftsmen use carefully calibrated measuring tools, such as vernier calipers, thread gauges, etc., to accurately measure the dimensions of each component to ensure that the error is controlled within a very small range.

During the processing, craftsmen will calibrate the parts many times to ensure that they are exactly the same as the requirements on the design drawings.

For parts that do not meet the standards, they will rework or remake them.

Craftsmen use sandpaper, files and other hand tools to finely polish the surface of parts to remove burrs and uneven areas.

This process requires great patience and care to ensure that the surface of the parts is as smooth as a mirror.

After grinding, the craftsmen will polish the parts to further improve the surface finish.

Polished parts not only look more refined, but also reduce friction and wear.

Design and manufacture casting molds according to the design requirements of the engine.

The selected molten iron and molten aluminum are melted into a liquid state, and the molten metal is poured into a mold, and after it cools and solidifies, it forms an engine casting.

After the casting has cooled, post-processing work such as demolding, cleaning, and inspection is carried out to ensure the quality of the casting.

The casting is subjected to preliminary cutting to remove excess material and form the approximate shape and size.

On the basis of rough machining, more refined cutting processing is carried out, such as milling, drilling, reaming, boring, etc., to ensure the dimensional accuracy and surface quality of engine parts.

Some of the components are then heat treated to improve their physical and mechanical properties.

Next, the craftsmen debugged the assembled engine according to the drawings to ensure that the engine could work normally.

When all the parts were made, the craftsmen began the intensive assembly work.

They assembled the cylinder, piston, crankshaft, connecting rod and other components according to the instructions on the design drawings to form a complete engine system.

Finally, after countless attempts and improvements, an engine emitting a metallic luster was born on Daling Mountain.

Although it looks simple, it contains huge energy and potential.

When the craftsmen started the engine, the roaring sound instantly resounded throughout the valley, announcing the arrival of a new era.

Don't ask about gasoline. Han Xin received a letter from Qin Chuan and sent someone to deliver it.

As for what was given, Han Xin himself didn't know.

........

On the other side, 2,500 top craftsmen were frantically studying the steam engine.

The manufacturing process of the cylinder, the heart of the steam engine, begins with carefully selected raw materials.

The craftsmen knew very well that only high-quality iron ore could forge cylinders that were strong enough and resistant to high temperatures.

Therefore, they went deep into the mountains and forests, personally selected iron ore, and smelted it using traditional methods to extract high-purity molten iron.

After obtaining molten iron, the craftsmen began casting the cylinder.

They first draw a detailed casting mold based on the design drawing, ensuring that every detail meets the requirements.

Next, they preheat the mold to the appropriate temperature to reduce shrinkage and deformation as the molten iron cools.

When everything is ready, the craftsmen carefully pour the molten iron into the mold and let it solidify into shape under high temperature.

Casting the cylinder is only the first step, the subsequent fine processing is the key.

Craftsmen use grinding wheels, files and other hand tools to grind and trim the inner and outer surfaces of the cylinder.

They needed to ensure that the inner walls of the cylinders were as smooth as mirrors to reduce the frictional resistance of the steam within them.

At the same time, the wall thickness of the cylinder must be uniform to withstand the high pressure and temperature of the steam.

This process is extremely demanding on the craftsmen’s skills and patience, as they need to constantly measure and adjust until every dimension of the cylinder meets the design requirements.