readx; The person Gu Yanwu greeted was almost unconfused, his face was fair, and he looked quite elegant, but at this time, he was wearing the same clothes as a worker, and he was sweating profusely to carry some square timber with the crowd, and placed the timber horizontally on the gravel roadbed. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Hearing Gu Yanwu's call, this person looked back hurriedly, and couldn't help laughing happily: "It turned out to be Brother Zhongqing!" It has been several years since the White Deer Cave Academy was separated, and the virtuous brother is even more energetic, but the foolish brother is old! However, I heard that the virtuous brother was a high school jinshi, and he was a scholar in the middle of the court, and he went in and out of the important place of the cabinet, I don't know why he got here? ”

Gu Yanwu hurriedly briefly introduced his recent situation, and the man said with even more emotion after hearing this: "Virtuous Brother Guo is a great talent in the world, and his vision is far higher than ordinary people. The teacher often said that most of the talents in the world were exaggerated, but only Huang Taichong, Wang Chuanshan and the virtuous brothers could be immortal. Now the virtuous brother does not let the promising Zhongshu people do it, and would rather come to Tongzhou to be a magistrate, this alone, the foolish brother admires it very much! ”

Gu Yanwu hurriedly said modestly: "Brother Chang Geng is too famous. When he visited Mr. Shu, the owner of the cave, he said to his brother in private: The students of this world will only read the books of the sages, and they can talk about it. Only Brother Chang Gung has learned the encyclopedia, astronomy and geography, and the three teachings and nine streams are all proficient, and over time, there will be great success. ”

The man smiled bitterly and said, "Brother Xian made fun of it." Since the foolish brother took the examination for the first time in the forty-third year of Wanli, he has failed three times in a row, and he has long since given up the idea of winning the office. Now the foolish brother is serving as a county teacher in Fenyi County, Yuanzhou Prefecture, Jiangxi, and he is barely making ends meet as a petty official who has not entered the stream, how can he be compared with the virtuous brother! ”

"Then why did Brother Chang Gung come to Tongzhou? What is this doing again? Gu Yanwu said suspiciously.

The man immediately became excited, and said endlessly: "Don't say that the virtuous brother doesn't understand, even the foolish brother doesn't understand. Brother Fool is just a small teaching, he was selected by the court for some reason, and this summer he received a letter from the Ministry of Officials, asking Brother Fool to report to the Ministry of Officials in Beijing as soon as possible. The foolish brother did not dare to slack off, and set off from Yuanzhou to the north on the same day, and arrived at Baoding Mansion more than a month ago. But I don't want to build a prisoner into the Kou, the Beijing division is under martial law, and Baoding Mansion is also strictly forbidden for anyone to go north without permission, and the foolish brother has to stay in Baoding for a month, which is really anxious! ”

"So, Brother Chang Geng has just arrived in Beijing?" Gu Yanwu said in surprise.

"Yes, I just arrived in Jingshi three days ago!" The man continued, "As soon as the foolish brother arrived at the ministry, he was personally received by Sun Shangshu and immediately sent the foolish brother to the ministry of works. Lord Xu, the secretary of the Ministry of Industry, was more courteous to the foolish brother, and personally set up a banquet to entertain him, which made the foolish brother even more flattered. ”

Gu Yanwu listened and groaned: "Xu Shangshu is presiding over the construction of a coking plant and a steel plant... Could it be that he understands Brother Chang Gung and wants Brother Chang Gung to display his talents in the Ministry of Industry? ”

"Brother Xian is only half right." The man's face was flushed with excitement, and he took out a drawing from his sleeve and handed it to Gu Yanwu, "Lord Xu did assign an errand to Brother Yu, but not in the Ministry of Industry, nor in the coking plant and steel plant, but here!" ”

Gu Yanwu took the drawing and saw that it was a sketch, with a trapezoidal shape on the left, on which the words "roadbed", "ballast", "sleeper", "rail" and so on were inscribed; On the right, there is a drawing that resembles a ladder, but on top of it is a cart with many wheels.

"What is this?" Gu Yanwu was puzzled and said, "My brother once heard Brother Chang Geng say that he plans to edit a "Heavenly Creation" to include the utensils and technologies used in the production of all walks of life, is this one of them?" ”

The man shook his head again and again, "Definitely! Brother Fool has indeed been editing "Heavenly Creations" in recent years, but it has not yet been written, and this thing is by no means included in Brother Foolish, because it is still only a design, and there is no physical object in the world. ”

"Brother sees that there is the word 'roadbed' in it, could it be that this is a road that can be driven?" Gu Yanwu still asked inexplicably.

"Exactly!" The man said excitedly, "Brother Xian, the road that Brother Fool is laying right now is based on this map for experimentation, and it is said that Banzai himself named it 'Railway'!" ”

"Railroad?" Gu Yanwu couldn't help but be stunned and said, "From ancient times to the present, there are only dirt roads and stone roads, and this 'railway' is unheard of!" How much iron does it take to pave a road with iron? What's the use? ”

"It's very useful!" The man said excitedly, "Brother Xian, please look at the old official road in the distance, when the vehicles pass, they all follow the ruts, do you know why?" ”

Gu Yanwu replied blankly: "What's so strange about this, the rut is made by the vehicle for many years, it is more solid and smooth than the road surface, and the vehicle can save a lot of effort by walking along the rut." I think that after Qin Shi Huang unified the six countries, he ordered 'the car is on the same track, and the book is on the same text', which is to unify the distance between the wheels and facilitate walking in ruts. What does this have to do with 'railways'? ”

The man smiled and said, "Have you ever thought that after all, this rut is sunk in the dirt road, the skin does not exist, the hair will be attached, the road is broken, and the rut will naturally cease to exist." But wouldn't it be much stronger if it were replaced with iron ruts? ”

Gu Yanwu looked at the drawings for a while, looked at the official road for a long time, and pondered for a long time, and then seemed to have an understanding and said: "That's right, with iron as a track, it is much stronger than a dirt road." But how can a vehicle move on the tracks? How are the rails laid? ”

The man immediately replied, "It is clearly marked on the drawings." First of all, the rammed earth roadbed is built, and then a layer of gravel is laid on the roadbed, which is called 'road ballast'. Timber of the same size is then buried horizontally into the ballast, which is called a 'sleeper'. The rails are fastened to the ends of this long row of sleepers with road spikes, and the vehicle travels on both tracks.

"But an ordinary vehicle is not enough, it must be a specially built iron car with iron wheels. When driving, the rails are embedded in the grooves in the iron wheels, so that the vehicle does not derail. Think about how smooth and sturdy the rails and wheels are, and how fast the car should go! However, it was still too early for the car to be built, and the foolish brother had to try to lay a short section of the railway to see if he could turn the design into a real thing. ”

Gu Yanwu still said in disbelief when he heard this: "Brother Chang Geng, although the rails are good, how can this car be pulled?" Walking on the sleeper shown in the picture, wouldn't it be a trip? ”

"Good question!" The man sighed, "I don't know who the designer of this 'railway' is, and the foolish brother admires it so much!" Do you know how he designed it? Master Xu told me that the ultimate goal of the designers was not to pull the cart by anyone or livestock, but to get power from burning coal and move forward on its own! ”

"It's... How is this possible? Gu Yanwu looked at this friend with flying eyebrows, thinking that not only him, but also the designer must be crazy!

At this moment, a familiar voice suddenly came from behind him: "Zhongqing, I didn't expect you and Mr. Song to be old acquaintances, it's really good." Hehe, I have always admired Mr. Song's name for a long time, and I really hate to see each other late! ”

Book friends group 3216195, welcome to join the interaction~

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