After Shang Wen woke up, he looked at his Yingyu with a hippie smile. Shang Wen sighed.

"Oh, what's the point?" Yingyu scolded.

"You don't even know what I'm doing?" Shang Wen said.

"You're on your way back to Xianyang. I think you can play your best role in Xianyang. In the north, there was a place of war. Not for you. Yingyu said.

Shang Wen didn't want to answer. The large-scale development of modern chemistry in modern times has come from oil and coal. It is these two resources that have allowed mankind to enter the era of industrial civilization. Shang Wen sat in the car, thinking about the price that human beings had to pay to start industrial civilization.

And in Xianyang, countless people are participating in such crazy inventions.

Due to the fact that the logistics in the northern part of the Qin State were all operated in a commercial mode. A large number of carriages and horses began to appear. The carriage and horse transportation was officially separated from each other and existed as an industry. Make it more professional and professional.

The transport of supplies from the north gradually intensified. Because there was a constant flow of troops to the north, and at the same time, a large amount of materials hoarded in the north urgently needed to be digested in the interior. The transportation of the carriage and horse is very busy. Several generations of carriage and horse production plants have appeared in the country.

Hi old hi brand. and a large number of civil officials appeared in various font sizes of carriages and horses. Although the production is very large, the demand is even stronger. The transportation industry is profiteering. Qin in terms of transportation to the army. No taxation is imposed. As long as you're carrying military supplies, everything is issued. As for the materials carried on the return trip, Shang Wen proposed at the beginning that the water should be deliberately released. King Qin also agreed. So, this back and forth. The cost of transportation is very low, but the profit is very high. A lot of people are starting to get on board.

The huge demand makes it impossible for several domestic car and horse shops to produce day and night to meet such a large demand. The chariot and horse dealers were faced with a large number of coachmen and coachmen who had received huge funds from the north, and the owners of the chariot and horse dealers. Now many people in various parts of the Qin State already knew about the huge war supply needs in the north. At the same time, they also heard from the grapevine that the Qin State was going to use troops on a large scale against the Yue Clan. In this way, they almost invested all the money they just earned. The lack of money forced them to move towards a union and a joint venture. After the first appearance of the Qin State, the second one also appeared quickly. This is how a large number of carriage and horse trades developed.

With a carriage and horse trade, they need a large number of carriages and horses. These carriages and horses almost spared no expense to buy the four-wheeled carriages they could buy, and the carrying capacity was repeatedly increased. And the chariot and horse factory of a certain imperial historian of the Qin State actually produced a six-wheeled carriage. The load capacity has almost tripled. But because it consumes a lot of horses, and the speed and handling performance are not good, it is short-lived. However, the advent of this six-wheeled carriage caused some people to move on to another type of transportation, and they began to try to carry the steam engine directly onto the carriage. For this reason, the carriage and horse company actually built an eight-wheeled carriage on its own. But soon, such an experiment ended in failure.

The reason is that the steam engine is difficult to control, and it is impossible to put it into production at once without any simple mechanical equipment such as transmission shaft and gearbox. The same is true for experiments. After the steam engine was connected to one of the driving wheels in front of it, it began to drive wildly, and the direction control was very difficult, and the speed could not be controlled. Directly lead to the failure of the experiment.

The failure did not stop the progress of other experiments of the same kind. The carriage and horse factories began to issue huge bounties for craftsmen to develop this large load. It can handle horses and horses with good handling performance.

Under a huge bounty. Many craftsmen began to take time out of their work, believing that they should soon be rewarded with their inventions.

Soon, various gadgets for chariots and horses appeared. Camshafts, reducers, planetary gears, steering wheels and much more. These are all parts of the chariot and horse, and they can all be actually controlled.

But at this time, disagreements also quickly appeared. The tractors and trains designed and manufactured by the arsenal were soon tentatively taken out by craftsmen for research. Tractors were originally used in agriculture, and there was no thought of transporting them. And this part soon began to be carefully studied with tractors as the object of study. They were designed to be quick and easy. They experimented with the design of the tracks, which were not very fast and extremely bulky, especially with the addition of the steam engine, the overall weight almost made the tracks difficult to walk. At this time, the steam engine had been upgraded for three generations, but its weight was still very large. It is not yet possible to fully miniaturize. It is also impossible to be absolutely small. Experiments were temporarily stopped here in favor of the development of a replacement for the bulky steam engine.

The way was quickly found. They took inspiration from the piston mechanism of the hydraulic press of the steam engine. According to the principle of the steam engine, a more miniaturized small steam engine was developed. The crazier move was later, and they needed a substance that could burn fully in an instant, and gunpowder, a military-controlled item, became their first choice, because gunpowder could burn in an instant, which was the prototype of the internal combustion engine. In a cast piston cylinder, they ignited gunpowder. The gas after the combustion of gunpowder. Pushed the piston to do up and down motion. Driven linkage rods. Start exercising. The experiment was a success because they were right. But after the gunpowder is ignited, how to ignite it again. Moreover, there is a lot of residue after the gunpowder is burned. The lubricity of the piston is extremely challenged. The experiment came to a standstill for the time being, and they needed a new substance. to move forward.

The other pursues a large carrying capacity. When the train was designed, Shang Wen did not send down the plan for the tracks. Because, production does not allow this yet. But now, when developing chariots and horses, it has come to this step ahead of schedule. The design of the steam engine. Just install it and you're good to go. Variable speed valves, which have reduced the steam supply and other measures to control the speed of such carriages and horses, and moreover, the size limit of the steam engine is not very strict, they can make a separate carriage to load the steam engine. A horse-drawn cart could also be used for fuel in the back, and a larger steam engine could tow them for a run. In this way, the number of carriages and horses that can be mounted in the back can be greatly increased. Experimental facts have also proved this. In a straight line, the steam engine can freely control the speed and carry a lot of horses and carts. But then a question arises. Direction. Directional control.

The highway from Xianyang to Guyang is not a straight line, and in order to speed up the speed, the straight line had to pass directly through many ravines. In order to reduce the difficulty of the project. The project chose to bypass these ravines, such a design. Apparently this requirement is also not met.