The initial test of the steam locomotive did not last long, Yang Cong just drove around the railway around Yuyuantan and stopped to finish work.

When he stopped, he also found a problem, that is, such a big thing, the inertia is also quite large, without brakes, even if you drive to the slowest speed, and then turn off all the valves, you still have to slide for a long distance before stopping.

If there's a problem with the track in front of you, you can't stop even if you want to, then something is going to happen.

Therefore, this brake must also be added, otherwise, even the pit stop will be a trouble.

Although this steam locomotive still has the problem of speed adjustment and parking brake, but such a big guy, it is already sensational enough to be able to run on his own without being pushed or pulled by a horse, and all the people who came to watch were shocked, and after going back, they naturally bragged desperately.

Yang Cong's reputation is even louder, and the name of "Fire Dragon Car" is also spreading, this "Fire Dragon Car" is actually not taken by Yang Cong, but this thing looks like a dragon's head, and it can also emit green smoke, and the onlookers unconsciously gave it this name.

This name, how to say it, it is natural to make people laugh at it in the future, but it is quite good at this time, Yang Cong did not deliberately deny it, nor did he say that he wanted to change it, the fire dragon car is the fire dragon car, at least with the color of the Ming Dynasty.

Unexpectedly, the name of this fire dragon car is really spreading too fast, he has not solved the problem of braking and speed adjustment, Jiajing actually sent someone to pass the word, wanting to see this legendary fire dragon car.

The emperor wanted to come to see something, when the courtiers naturally couldn't refuse, Yang Cong could only delay for some time in the name of preparing the venue, and only after the brakes and speed adjustment valves were installed and tested were also tested, he sent someone to tell Jiajing that Weichen had prepared the venue, and if the emperor wanted to come, he was welcome at any time.

He did prepare the venue by the way, and he ordered someone to build a huge shed next to the railway, which was like a station, and was full of flowers and colorful flags, waiting for Jiajing to come in person.

Early in the morning, at dawn, Jiajing ended the early dynasty early, and then took a group of important ministers and imperial guards to drive over to Yuyuantan.

This emperor's patrol is a big event, especially when he comes to a courtier's place to inspect, Yang Cong naturally welcomes more than ten miles, and waits directly at the city gate.

A group of thousands of people walked like a turtle for about an hour, and finally came to the pergola outside the School of Physics, Jiajing looked at the magnificent dragon car, and immediately became interested, he even ignored the dissuasion of the ministers, ran down directly from the dragon chariot, circled around the dragon car several times, and even climbed into the car to visit.

Well, there is firewood and stove in the front of the car, it is really not very clean, and there is no space on it, such a big pomp as Jiajing, there are no dozens of imperial guards to take the lead, Yang Cong can only use the test as a name, so as to persuade Jiajing to the platform specially built for him under the pergola.

This time, Yang Cong naturally couldn't drive, after all, he was the master, the emperor was coming, he had to accompany the attendants, and the task of driving was handed over to Wang Xuan.

After Jiajing sat down, he asked with great interest: "Qingfeng, can such a huge fire dragon car really run on the road by itself?" ”

Yang Cong nodded without hesitation and said: "Of course, how dare Wei Chen deceive the emperor, this fire dragon car Wei Chen has already tried it himself, and he can indeed run by himself." ”

When Jiajing heard this, he couldn't wait to raise his hand and said, "That's okay, run up quickly and let me see." ”

Yang Cong hurriedly made a gesture and signaled to Wang Xuan in the carriage that he could drive.

Woo........ ”

A majestic and distant whistle sounded again, and in Jiajing's shocked gaze, the fire dragon car slowly started and slowly drove towards the outside of the pergola.

At the beginning, the speed of the fire dragon car was not very fast, so Jiajing could still see it, but as the speed of the fire dragon car increased, after a while, it disappeared from everyone's eyes and disappeared.

Oh no, I'm!

I've run so far, just look at this tea time and don't have to look at it?

Jiajing couldn't help but look at Yang Cong dumbfounded, and said unsatisfactorily: "This is the end?" ”

Yang Cong hurriedly explained: "No, no, this railway is a circle, and it won't be long before the dragon car will drive over from that side again." ”

When Jiajing heard this, he couldn't help but turn his head to look at the other side, but he looked at it for a while, but he still didn't see the shadow of the fire dragon car.

He couldn't help but be curious: "What about the fire dragon car, why hasn't it come over for so long?" ”

Yang Cong said embarrassedly: "Your Majesty, this railway is more than ten miles in a circle, and at the speed of the fire dragon car, it will take almost a quarter of an hour to make a circle, and please wait a while, wait a while." ”

A quarter of an hour, more than ten miles!

Isn't this as fast as a galloping horse?

Jiajing couldn't help but be surprised: "It turns out that the rumors are true, this fire dragon car runs at the same speed as a galloping horse!" ”

Yang Cong couldn't help but say with a little smugness: "This fire dragon car can actually run faster, but it's a bit dangerous to run too fast, so Weichen just let it run slowly at the speed of a galloping horse, so there is no danger." ”

When Jiajing heard this, he couldn't help but be curious: "Oh, how fast can the fire dragon car run at the fastest?" ”

How to describe this?

At present, the speed of this steam locomotive is about 20 kilometers per hour, that is, 40 kilometers per hour, and it can travel about 1,000 miles in 12 hours a day, and if the thrust is increased, it is not impossible to travel 30 kilometers or even 40 kilometers per hour.

Yang Cong estimated: "If you run with all your might, Weichen estimates that it is possible to travel 2,000 miles a day." ”

So fast!

Doesn't that mean that starting from the capital, you can rush to Chengtianfu in one day!

Jiajing was a little willful and said, "Then why don't you let this dragon car run at all its might?" ”

Yang Cong resisted the urge to roll his eyes, and patiently explained: "Weichen is afraid that he can't control it if he runs too fast, and when the time comes, he will bump into someone, or run off the track, but it will be troublesome." ”

When Jiajing heard this, he said with regret: "Oh, that's a pity." ”

While the two were talking, there was already a whistle on the other side, and the fire dragon car was really coming from the other direction.

Jiajing didn't need Yang Cong's prompt, when he turned his head and looked forward to it.

Sure enough, after a while, the fire dragon car roared and appeared in everyone's sight, but soon, the fire dragon car roared past again and disappeared from everyone's sight.

Jiajing still said with some unfinished thoughts: "Hurry, really fast, this fire dragon car is running really fast, if I get on this fire dragon car, I can reach Chengtian Mansion in two days, right?" ”

Yang Cong said with a little pride: "That's natural, this dragon car consumes firewood, there is no such thing as fatigue at all, it can run day and night, and it is enough to rush to Chengtian Mansion in two days." ”

When Jiajing heard this, he couldn't help but say with hope on his face: "Qingfeng, when will you be ready, I want to go back to Chengtianfu as soon as possible, my mother has passed away for several years, and I haven't gone back to see her old man." ”

It turned out that Jiajing was so eager to return to Chengtianfu, not for himself, but to go back to his mother to mourn his filial piety, Yang Cong couldn't help but be moved when he heard this.

Although there are many things that Jiajing is not like, but filial piety is quite good, for the sake of his parents' nickname, he even did not hesitate to compete with the important ministers of the court, modified the etiquette law, insisted on giving his father the emperor posthumously, and named his mother the queen mother.

His filial piety is indeed touching, but this railway is not said to be repaired, more than 2,000 miles, how long will it take to repair.

Yang Cong could only say helplessly: "Your Majesty, this fire dragon car must run on the railway, and it will take at least two years to build the railway to Chengtian Mansion." ”

Two years?

Jiajing thought it was a bit long, but Yang Cong thought that time was very tight, if he didn't know that Jiajing was an impatient, he wouldn't have made a commitment for these two years.

This guy has been building a 2,000-mile railway in two years, and he is always dying!