"What is Yiming writing?" Hu Yuhe came back at some point, and sat down opposite him as he spoke.

"I'm thinking about how to make it easier for these passengers to get on the bus and not be so nervous and in a hurry," Li Yiming looked at Hu Yuhe, "Uncle Hu, after I write it, you can take it and see if it's useful." ”

"I'm from the locomotive depot, you are a station officer!" Hu Yuhe shook his head, "The locomotive maintenance train repair, the matter of the two departments, it's not good to say much." ”

"But you all serve one thing......," Li Yiming was a little unhappy, "Aren't you repairing the car so that the car doesn't go wrong and better transports passengers and goods?"

There is no contradiction in improving the process of station affairs, and the process is more scientific, the management makes fewer mistakes, and the safety is not more guaranteed?"

This reason, it seems to be right, Hu Yuhe was a little embarrassed, and smiled: "That's okay, you say, I'll show them if it's useful, as long as it makes sense, there's no harm, cough ......"

The last cough is obviously unconfident, just think of it as a perfunctory to the child, anyway, there are more chats with people on the train, who can take all the words seriously, they are forgotten when they get off the train.

"I'll write it down, I can't remember it. Li Yiming held the pen and recalled the scene he had just seen.

He looked out the window, the speed of the car was not fast, it was almost still within the station area, and there were several other trains outside, there were green passenger cars, and there were iron wagons.

"Yiming, you don't like to watch trains, that's the wagons loaded with coal! Hu Yuhe hurriedly asked him to see, and in his impression, many children were very curious when they saw the train moving.

However, people can't see the train when they are sitting in the car, so when there are other cars moving on the side of the road, most people will look curiously, especially the huge iron wheels, as they are turned under the thick steel axles, making loud noises.

Li Yiming was really curious, turned his head, and looked at the outside curiously: "I don't know how fast this train can go." ”

Hu Yuhe thought for a while: "Fifty kilometers! The speed of our mountainous areas cannot be raised, there are too many main mountains in our province, and it was very difficult to build roads back then. ”

"This is a diesel locomotive, right?" asked Li Yiming softly.

Hu Yuhe nodded: "We call it an internal diesel locomotive, you know, where do you see it?"

"In the book, 100,000 whys, it is written why the train can run so fast...... Li Yiming looked out the window, "It's not very fast." ”

"It's not that it can't be fast, the train can be equipped with several heads, one end and one tail, and both heads, but our road has a problem, and it can't be too fast, otherwise it's not safe. ”

Hu Yuhe was very patient, and motioned to Li Yiming to look out the window and look below: "Look at the railway below, the roadbed is not very high, and the side is gravel, we have many mountains here, and the railway is in the mountains."

Do you think, if there is a torrential rain and a flash flood that can suddenly be washed away, what if the car overturns too quickly?"

Li Yiming nodded, and looked at the window with his face against the window for a while: "Well, is there still a situation where there is something on the track?"

"Yes, quite a few. Hu Yuhe sighed, "I've seen a lot, so why do you see that there is a big rake in front of the front of the car, which is used to block these things, but it's useless, some of the really small ones can still be rolled in, it's scary!"

However, we have road guards, but the road is too long, and many people sometimes have problems, and there are a few times when people on the road see that the road is broken, and they run to the front to stop the car, and they almost have an accident. ”

Li Yiming was silent for a moment, and then asked, "Is there a collision between the two cars?"

"This... Yes, that's basically rare, this kind of thing is generally because there is a problem with the signal, and there is no timely trigger. Hu Yuhe said softly.

Li Yiming nodded, it is said in the story that after more than two years, there was a very serious train accident on a line on the edge of Shencheng, and the two cars collided head-on, causing extremely serious casualties and heavy losses.

These people are killed and injured in China, it's very annoying!

Accidents should never be, and this is not a war.

Li Yiming frowned, big accidents do not exist alone, there are always a series of small accidents, a series of non-standard operations, and factors that do not pay attention to safety, so this is still the content of safe production.

Hu Yuhe thought he was afraid: "Don't worry too much, we have special people to protect the road, we have to walk every day, and report if there is a problem, otherwise why do you think the car will often stop and wait for a long time." ”

"So that's one of the reasons for the slowness?"

Hu Yuhe nodded.

Li Yiming looked at the scenery moving back quickly, and the other track stretched out for a long time, with an endless feeling, if tens of thousands of kilometers of railway lines across the country were changed to the ideal appearance, what would it look like?

How much steel, reinforced concrete, stone and sand are needed, how much wood is used, how much time and money is needed, and how much social value and economic benefits can be brought?

He took out another piece of paper and wrote lightly on it.

"Seal off the entire railway?" Hu Yuhe sighed several times when he saw what he had written, and then smiled bitterly, "You have to use a lot of boards, and you said that the sleepers are all made of reinforced concrete? How much does this have to use! ”

"Uncle Hu, I'm just writing some ideas, if we want to reach a speed of 200 kilometers, how to change this railway. ”

"Oh, are you going to write an essay?" asked Hu Yuhe with a smile.

Li Yiming looked at him: "Well, hand in your homework." ”

"The school still arranges this?" Hu Yuhe asked strangely, is the school already teaching children like this now?

Li Yiming shook his head: "Didn't you say that you want to build the motherland?"

Hu Yuhe looked at the young man in front of him, his eyes fell, he was drawing, it was a rectangle, like a bullet in front, with wheels underneath and wires on it.

"PHS roams the future world?" Hu Yuhe couldn't help but ask with a smile again, he had also read this book.

The young man in front of him raised his head a little dumbfounded: "It's not the future, it's not the near future." ”

Oh, Hu Yuhe replied softly, removed from the words he saw the electric locomotive, and began to hold his chin, look out the window, look at the teenager in front of him, and seriously write the whimsical construction plan on the paper.

Electric locomotives, where does the electricity come from, you have to put up wires on the railway, then there is not so much electricity in the city now!

And what he just said about improving the station process, I guess I have forgotten about it.