The soldiers of the 16th Guard of Chang'an began a new round of training, together with the first batch of cadets of the Joint Command Academy, the recruitment of the second batch of cadets was temporarily suspended, and the second batch of cadets will probably be recruited in the 24th year of Datang.

After Li Ke arranged them, he didn't pay attention to this matter.

Because there is a brand new thing waiting for Li Ke to verify.

At the end of June of the twenty-third year of the Tang Zhenguan, located west of the Weishui River in the west of Chang'an City, a building with a huge area officially knocked the last nail, and this nail was hammered in by Li Ke.

Well, the sense of ritual is still very important.

As Li Ke knocked down the last nail, all the people on the scene began to burst into warm applause, and many workers couldn't help but cheer directly, because this road took two years to finally complete!

On the embankment, which rises more than a meter above the ground, sleepers soaked in coal tar are laid on top of the gravel, and four slender railroad tracks stretch straight into the distance.

This is the first fully completed railway in Datang! This is also the most primitive railway, and the technology used is estimated to be the technology of Li Ke's previous life in the twenties and thirties of the twentieth century, but it has been optimized and the construction process has been optimized.

Its service life may not be very long, if it is used frequently, maybe after more than ten years, its rails will have problems, and then it will need to be replaced, sleepers, etc.

But it doesn't matter, more than ten years later, Datang is enough to have new technology to replace brand new rail sleepers.

Now, the building they are in is Chang'an West Railway Station, the first railway station in Datang, and about three kilometers away from this railway station, there is a one-way railway connecting here, and there, is Datang's first steam locomotive manufacturing plant.

At this moment, Datang's first train has been prepared in the maintenance station of the railway station.

Its entire steam engine technology is already very advanced, although it is still a coal-burning steam engine, but many of its technologies are actually very advanced, after all, Li Ke has a complete technology tree here.

Historically, steam locomotives have gone through a long period of development to reach this point, after all, the improvement of some small parts inside may take years, or even more than ten years.

Such as preheaters, smoke deflectors, obstacle eliminators, etc., with these relatively advanced designs, coupled with the most optimized manufacturing solutions, excluding some difficult designs, that is, the birth of this unique neat train head.

It can reach speeds of up to 40 km/h at full loads, which is not even as fast as a horse's running speed, but its endurance is much faster than a horse's.

In the state of empty car, its maximum speed is not high, about 60 kilometers per hour, not that it can't run faster, but its wheels, bogies and other structures can't support it to run faster.

In fact, it sets a safe speed of 50 km/h.

The maximum running time for a single water refill is about nine to ten hours, and it is designed with a dedicated water tank and a carriage for pulling coal.

The maximum number of wagons is seven standard cars, and the number of people in each car is 200.

Of course, it is impossible for all of these carriages to be used to pull people, and it can only have a maximum of five carriages for pulling people. That is, the maximum number of passengers is about 1000 people.

If you pull people, this train cannot be fully loaded, not counting the weight of the carriage, it can pull about 400 tons of goods when it is fully loaded.

In fact, the potential of this steam engine is still huge, with the progress of production and assembly technology and materials, the maximum traction mass of this steam engine alone is estimated to reach about 2,000 tons.

If you go any further, you need to continue to upgrade the technology.

But this technology is enough for the current Datang.

"Have you tested it?" Li Ke looked at a few craftsmen in front of him and asked, almost all the craftsmen in the industrial zone have rushed over this time, although many of them have nothing to do with steam engines, but this can almost gather the masterpieces of all the current Datang technologies.

"It has been tested Your Highness, from the production plant to here, we have tested it several times, its operation is very stable, and this steam engine itself we have changed to power output, in some factories and iron ore factories have been tested for a long time, it has no problems!" Lu Daqiang said with some excitement.

"It's just that now we haven't tested it from Chang'an Station to Chencang Station, the total length of this railway is about 176 kilometers, and according to the average speed of this train of 50 kilometers per hour, we can reach it in about 3 hours! We could even walk a round trip in half a day! ”

Li Ke nodded with satisfaction, and then looked directly at Xu Xiang behind him and said: "Go, report the good news, and tell my father and emperor as quickly as possible, including all the officials of the three provinces, who can be in Chang'an City, all of them will arrive here tomorrow, and we will test a new mode of transportation!" ”

"Yes!" Xu Xiang was also a little excited, he didn't know how the steel dragon in front of him was made, and it was running so fast, and it could pull so many people.

Two hundred people in one car? In Xu Xiang's opinion, such a carriage can easily be stuffed into it by squeezing five or six hundred people, even if it is five carriages, this means that an army of nearly three thousand people can be transported at the same time!

Three thousand people, a hundred miles per hour, and more than two thousand miles a day! What is this concept? How many times faster than before?

That's too fast, and there's too much cargo to pull.

Xu Xiang's movements were very fast, and several little eunuchs directly turned over and rode their horses, and then rushed towards Chang'an City as fast as they could.

His Highness said that it was the fastest speed, and they directly used the privileges given to them by His Majesty.

Although it is not an eight-hundred-mile expedited one, it directly rushes straight to Chang'an City with an eight-hundred-mile expedited attitude.

The horseshoe mounted on the horseshoe galloped on the road, and the knight on horseback kept roaring loudly "King Qin urgently", hearing the roar of the knight on horseback, the pedestrians on the road have given way to the main road, in fact, the official road built by the Tang Dynasty, although it is also under the promotion of Li Ke to carry out the way of walking up and down the road.

But in the central part of the road, the people were never allowed to walk freely, for the sake of these horsemen who delivered the message.

When the cavalry rushed into the Taiji Palace, Li Shimin was a little stunned, and Li Ke did not leave Chang'an City, what could be the urgency? Didn't he say that the construction of the road between Chang'an and Chencang was going to be completed? He went to the scene to observe, and this is ...... Got a result?

"Xuan." Li Shimin announced the people in as soon as possible.

The eunuch who came in was one personally selected by Chang Lin, and Li Shimin had seen these eunuchs, so he also recognized it.

"Your Majesty, His Royal Highness the King of Qin is in a hurry, the new road between Chang'an and Chencang has been completely completed, His Highness suggests that His Majesty take all the courtiers of Chang'an to the location west of Weishui tomorrow to test the new mode of transportation."

"His Royal Highness also said that all the princesses and princes can go to watch the ceremony."