A new restricted area has recently been set aside in the southern suburbs of Hengfu City, and only designated persons and holders of special passes are allowed to enter and exit.

On this day, the Ding family's carriage drove into the new forbidden area.

"Sister Xingzhu, Your Excellency Huang Wan, can you do it today?" Long Yan walked out of the carriage with Jingjing in her arms.

Also in the same car with her were Ruan Xingzhu and Huang Wan.

"Sure it will be successful!" Huang Wan's face was full of confidence.

"Senior Sister Huang has found the problem, and she will definitely be able to solve it by taking action specifically for that problem. Ruan Xingzhu is also confident.

How did she end up here?

After making football, her wish was not satisfied, and Ding Kui finally figured out where she could be used, so he sent her back to Hengfu City.

The new exclusion zone is a place where research, production and installation of railroad tracks are carried out, and the research and development of "rail cars" is also carried out here.

Because Ding Kui didn't know how to make a steam engine and couldn't make a locomotive, he decided to use other power, and the train could not appear in this world, and could only run other vehicles on the tracks, so he called it a rail car, and the new forbidden area was called the Rail Bureau.

There is a paved section of railway in the track bureau, which is 200 meters long, and there are two carriages on it, one is the tractor locomotive, and the other is a flatbed car, which can be stacked at will.

The rail car developed with Ruan Xingzhu is of course powered by the wind, and Ding Kui fully borrowed the principle of sailing ships in the water and suggested that the rail bureau use sails.

The requirements for the railway with horse-drawn horses were too high, and dozens of horses needed too much space to run, occupying too much space, and it was not easy to control the horses, so this plan was abandoned by Ding Kui.

Yesterday, the craftsman installed a huge sail on the head of the tractor, but unfortunately Ruan Xingzhu blew off the mast when using a strong wind, and after Huang Wan's inspection, he ordered the craftsman to build a pure iron mast overnight, and used the toughest rope to tie the canvas to the mast.

Today is the day to test the new mast.

Huang Wan can integrate the mast with the head of the tractor, so she has absolute confidence in the success of the test.

"Will the wind tip the front of the car over?" Ruan Xingzhu looked at the tall sail and had new worries.

"No, honorable magician, only by placing a heavy object in the back compartment can counteract the rollover pull of the sails, just as the sailboats in the river will not capsize. A craftsman replied.

"Let's get started, Senior Sister Ruan. Huang Wan put away her magic wand.

The new mast has been installed and the wind-powered rail car is waiting to start.

Creating a strong wind within a certain range is easier than casting the Wind Blade Technique, and Ruan Xingzhu can complete it with a single raise of his hand.

"It's moving!" Long Yan exclaimed in surprise.

The two railcars glide forward with the force of the wind, getting faster and faster.

Whoop!

Everyone in the proving ground cheered!

This is a moment that can go down in history!

The world's first wind-powered rail car was running smoothly on the test track, but those present did not realize how much it would contribute to human civilization.

After the rail car walked out of a section, Ruan Xingzhu put away the strong wind, but it still moved forward under inertia.

At this moment, a craftsman on the front of the car pulled the brake lever, squeaked, and after a burst of noise, the rail car gradually stopped.

"Hahaha, it's done, it's done!" Huang Wan clapped her hands and jumped.

"Your Excellency Ruan Xingzhu, is this magic power consumed too much?" asked Liu Yu.

He and Qian Bu were both present, and the rail car was a key project developed by Ding Kui, so they must participate in such an experiment.

"The first start requires a lot of wind, but after running it can be much lighter, and the mana consumption is much less than I expected. Ruan Xingzhu's mood was also very excited.

The rail car was built by Huang Wan, but it was up to her to use it, and she was the key point of the project.

"The main purpose of the rail car is to transport goods, and in the future, there will be more than one carriage, and the goods loaded in the carriage will be much heavier than today, and His Excellency Ruan Xingzhu will have to consider the consumption of mana in the future. Qian Bu reminded.

"This Brother Kui told me that I can design a wind array for the rail car, and convert the energy of the magic core into wind power, and the magician who uses the array disk only needs to control it, and its own magic power does not need to consume too much. ”

"Senior sister is right, as for how much consumption will be in the future, and how long a magic core can last, it will only be known after testing. Huang Wan added.

"Suppose you want to pull five carriages full of goods, from Hengfu City to Juyang City, can a first-level magic core be used once?" Liu Yu was most concerned about the cost.

"Of course you can, the first-level magic core can use the wind blade technique hundreds of times, and the strong wind is much simpler than the wind blade, roughly calculated that a first-level magic core can drive the rail car for nearly a thousand kilometers. Well, without going against the wind. Ruan Xingzhu knew that Liu Yu didn't understand magic, so he didn't laugh at his questions.

When the natural wind direction is opposite to the direction of the rail car, the sail will not help but have resistance, which is the defect of the wind rail car.

In Liu Yu's cognition, the Wind Blade Technique can fly at least two hundred meters, and one hundred Wind Blade Techniques is twenty kilometers, and low-level magicians can generally cast three hundred Wind Blade Techniques, which is equivalent to sixty kilometers, so it is inferred that a magic core can be used about once.

He didn't know that strong winds were much weaker than wind blades, and he couldn't use wind blades to calculate the travel of railcars.

"That's great!" Chambou immediately saw the advantage of the railcar.

He has managed the Huaxia Carriage and Horse Dealership, and knows the cost and profit of cargo transportation, a first-level magic core is enough for five fully loaded trucks to go back and forth between Juyang City and Hengfu City eight or nine times, this cost is definitely less than that of ox carts or carriages, and it also saves a lot of manpower.

"Can you meet Xianggong's request?" Long Yan couldn't understand their conversation.

Ruan Xingzhu and Huang Wan glanced at each other, nodded and said, "It's basically in line with Brother Kui's expectations, but he suggested that we do more experiments and don't rush to conclusions." ”

"That's right, let's continue experimenting. "Long Yan is particularly interested in this new thing.

Craftsmen pull the railcars back to the starting point and carefully inspect the masts and sails, while porters carry bags of grain onto the railcars to increase the weight of the railcars.

"Qian Lao, the test site of the Rail Bureau is too small to meet the future tests, I suggest that a section of the railway track from Hengfu City to Juyang City be laid first, at least through a town, so that we can get more useful data. Liu Yu discussed with Qian Bu in a whisper.

"The young master has set the secrecy level of the Orbital Bureau as Category II, and he is not too worried about others stealing this technology, or we will move the Orbital Bureau to Giant Sheep City. ”

The rail car is a civilian technology, Ding Kui has no intention of hiding it, and he doesn't mind others stealing it, even if other countries want to build railways, he supports it.

"Well, this place is suitable for technology research and development, not for manufacturing, we can build a vehicle manufacturing plant in Juyang City, and the production of rails and carriages will be placed there, so that there will be no delay. Liu Yu has a more reasonable idea.