As the "head of the negotiation team", Lang Chengli, the right attendant of the Ministry of War, sighed: "Ping Nanbo, the imperial court can be said to be full of sincerity, we have even brought the documents for the appointment of the chief soldier of the Ministry of War, and your cousin can go to Shandong to take up his post immediately." Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 infoI've been in the military department for so many years, and I've never seen an appointment that went through the process so quickly. ”

Xia Nan understood what he meant, the court showed sincerity, and you Ping Nanbo also had to show sincerity, so he immediately made a decision: "Lord Cheng doesn't need to say much, I understand." When you return to the capital, I have ordered someone to take the silver from Qiongzhou, and it can be delivered today. ”

Cheng Li was overjoyed, the money was in hand, and this errand of "turning the fate" could be handed over.

Xia Nan was also very happy, just 200,000 taels of silver, before controlling the maritime trade, it was a year's total income, which was a huge amount of money, but now it was just a drizzle for him, and he didn't even need to take it from Lingao, he could directly take out a part of the loot captured by defeating Gao and Zhang's joint forces, so that the silver was exempted from the task of fighting in the northwest, and the position of a Dengzhou general soldier, it was worth it.

A few days later, the "Maria" also brought Lin Weiye from Lingao.

After not seeing each other for a few months, Lin Weiye didn't bother to greet Xia Nan, but complained: "Why are you calling me from Lingao in a hurry, I can't leave with a lot of things!" ”

Nan's eyes lit up in the summer, Lin Er was in charge, but whenever there was anything, there was generally a new progress in technology, but this time I didn't know whether it was civilian or military. He asked curiously, "Did you make any new treasures?" ”

Lin Weiye looked at him proudly: "I'm afraid I'm going to disappoint you, it's not the guy for the army, but I led the students of the Baicao Garden Intermediate Class to drum out the railroad, when you sent someone to Lingao to find me, I happened to be planning the entire Lingao city rail transit - I plan to use this as an urban light rail in this time and space, as a means of public transportation, to improve the urban taste of Lingao." ”

Xia Nan was a little surprised: "So you've been doing this all this time?" What kind of horse horse is used, how many people or goods can be transported at one time, and we can't make stainless steel now, what should we do if the iron track rusts? ”

Lin Weiye replied appreciatively: "I can't see that you are still very professional, and you have asked the point." The current test is a four-wheeled vehicle of about 5-7 meters, with a full load of about 10-14 people, and the Yunnan horse purchased in Yunnan is currently used as a traction horse. The characteristics of the Yunnan horse are that it is short and healthy, hard-working, good at carrying weights, and can travel far distances, which is not suitable as a war horse, but it is a good choice to drag a four-wheeled carriage. Originally, on other roads, two or three Dian horses could never pull a carriage full of about 10 people, but with the track, the load can be increased to about twice as much, and one horse can pull it, but the speed is a little slower. ”

"As for rust...... Lin Weiye explained, "this is not a problem, even if the modern railroad tracks are exposed to the sun and rain, they will still rust, but as long as the car passes often, the running surface will be polished, so the side of the wheel will not rust, and the rust below will not affect the passage of vehicles." High-speed trains are not afraid of rusty tracks, and our tortox-fast carriages are even more fearless. ”

Even in modern times, railroad tracks are commonplace, Xia Nan didn't pay attention to the problem of rusting rails, and returned to ancient times to make up for his knowledge. He said happily: "Since it won't have an impact, then it's no problem, and I'm looking forward to returning to Lingao to see these railcars." With bamboo cement buildings and perfect drainage facilities, coupled with public rail transit, the people of Lingao are definitely the happiest people in the entire Ming Dynasty. ”

"That's one of the purposes of this railcar. In addition to civilian use, strategic materials can also be transported to the dock at a higher speed in wartime, which is much more efficient than carrying them on the shoulder. ”

Xia Nanxi said: "I didn't expect this, military and civilian dual-use, not bad." ”

"Actually, there is another question that you have overlooked, and it is precisely the problem that I and the students have been thinking about for the longest time." Lin Weiye said, "If the track wants to be easy to maintain, it must be laid in sections, and sleepers must be laid underneath. But in this way, the bumps are uneven, the horse is one foot deep and the other is shallow, and it is easy to trip over the sleepers......"

"Yes! Sleepers are not an obstacle for trains, but they are difficult for horses. Xia Nan frowned, "Then how to solve it?" ”

"I vaguely remember that in the 18th century, the solution was to sprinkle fine soil between the sleepers and fill in the gaps. However, this method has many shortcomings, first of all, it is necessary to maintain it every day, and fill the pit of the horse's hooves, which is extremely cumbersome, and secondly, the road surface is back to the original state of 'gray on a sunny day and mud on a rainy day', and the cement floor that we spent a lot of effort to build is blind. Lin Weiye stretched out his hand and explained, "Later, a student named Second Brother Su made a suggestion, he said that since it is inconvenient for the rails to protrude, why not sink the tracks?" This sentence inspired me, so I designed a recessed concave track, removing the sleepers, and embedding the rails directly into the concrete pavement, so that there would be no such troubles. ”

"But without sleepers, according to you, it will be inconvenient to maintain and replace the rails?"

"Out of the way. The speed and load of the carriage and the train are not the same, even if there is damage or deformation of the rails, even if it causes derailment, it will not cause major casualties, and it can be used for repairs, and it will be replaced in three or five years! ”

Xia Nan nodded, "I'll leave it to you to do it, I fully trust you." However, I brought you from Lingao today, not to listen to your popular science railway knowledge, but to give you an official to do. ”

Lin Weiye was stunned, touched his head, and asked puzzledly: "I am an official?" I can't be an official? ”

Xia Nan smiled: "Just let you put on a name, you don't have to do anything, and you are the chief soldier of Dengzhou, the military attache over there in Shandong, I remember that you are from Shandong, which can be regarded as returning to your hometown in another time and space." After all, I am already the chief soldier of Qionghai Town, and I was made an earl by Chongzhen during this time in Nanjing, so I can't be the chief soldier of the north and south at the same time, right? ”

"Just name and nothing? It's pretty much the same, you asked me to study technology, and being an official is not that material. As he spoke, Lin Weiye reacted, ", you said you were knighted?" When? ”

Xia Nan smiled: "This is a long story, we brothers might as well have two drinks in the evening, and I will slowly tell you the details." To summarize it simply, it was in Nanjing that he had a fight with the town guard eunuch who had offended back then, and then Chongzhen was shocked, so there was this earl. ”