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In the era when there was no quinine, once a patient had malaria, the chances of surviving were very rare. In the face of death, no one can be calm, and he can only be self-anesthetized, and Liu Wenbing's method of self-anesthesia is to desperately improve the "meteor bomb" he created.

Not to mention Liu Wenbing, the other two Ma Fen and Tang Kai, who suffered from malaria, learned that Liu Wenbing was pondering the "meteor bomb", and they also unanimously felt that this method of finding trouble was the best anesthetic to divert fear. So the two were not willing to be lonely, and they were also racing against time, racing against time, and came up with the spirit of "releasing the last bit of light and heat in life", vowing to make the final contribution to the progress of mankind.

The two found a major event worthy of common attention, but it was quite ridiculous that the two had a huge disagreement.

At the beginning, Tang Kai was sick in bed, and after some cranky thoughts, he thought that this trip was originally to repair Krama Road, and then Tang Kai thought, if there is a way to build a railway, wouldn't it be the best!

Well, the railroad is good, but it is indeed too expensive, and there is no money to build the railway, even if you have money, where can you buy so much iron! Not to mention buying railroad tracks.

However, the living can't be suffocated by urine, right! Tang Kai thought of a way, although we can't afford to build the railway, but rail transit can give it a try.

Tang Kai once visited an exhibition on the history of rail transit held by a foreigner, and the foreigner can really collect it, and actually collected the wooden track of the 17th century, so that Tang Kai was fortunate to see the antique track hundreds of years ago.

Wooden rails were first used in mines, and the miners who suffered from mine transportation were always in pursuit of the lowest cost and maximum output, so there were pioneers in the use of wooden rails to transport ore.

As early as the middle of the 16th century, the steel industry in England arose, and mining was carried out everywhere. However, at that time, the transportation of the mine was still very backward. Iron ore is all on horse-drawn and human backs, and the labor efficiency is very low. In this regard, a certain energetic and self-motivated capitalist came up with a way to transport more iron ore: he ordered people to lay two strands of logs from the top of the mountain to the bottom of the slope, so that the distance between them was the same, and they were placed one after the other at the bottom of the mountain. When the bucket truck full of ore slid down the two logs, the people on the hill shouted: "Attention, the car is down." When the people at the foot of the mountain received the minecart, they also replied loudly: The cart has arrived, okay! After the ore is unloaded, the empty cart is pulled up the hill by mule, and the rest of the cycle begins.

This is the original wooden track.

Science and technology is the primary productive force, with a wooden track, get a few rail cars, the efficiency of transporting ore is really greatly improved, and later because the wood is not wear-resistant, so someone improved on this basis, and further opened the track of wooden inlaid iron sheets. It must be said that human beings are still very strong in the process of fighting with the heavens and the earth.

However, this is not the earliest rail transportation, the earliest rail transportation was made by ancient Greece. Ancient Greece had rail traffic in BC, the ancient Greeks carved grooves in the stone, built on the city's avenues, so that whether it was by manpower or horse-drawn four-wheeled vehicles can pass quickly on the tracks, not only fast, but also to ensure traffic order.

The disadvantage of wooden rails is obvious, that is, it wears out quickly, and once it is worn, safety accidents will come one after another, which is the conclusion that the ancients have reached. Tang Kai believes that compared to wooden tracks, the kind of rails in ancient Greece are worth trying.

So Tang Kai solemnly proposed to Han Huanzhang that the construction of Krama Road could be built into an ancient Greek-style grooved track, and then the fast traffic on the east and west sides of the strait could be opened.

Ma Fen knew about this - there was no way not to know, Ma Fen lived next door to Tang Kai, and the log building was good, but it was not soundproof. When Ma Fen learned that Tang Kai had come out with this moth, he expressed great contempt.

"Han Huanzhang, don't be fooled by Tang Kai, human history has proven that there are only two options for building roads, one is to build asphalt roads and cement roads, and the other is to build railways. If you have time, let's do some research on how to repair the road. You see, I've written down some ideas in my notebook about building roads. ”

Ma Fen is worried that if he dies, Han Huanzhang, an artist who has no score, may really build some "Greek track", which will only ruin the reputation of the traverser. It is best to build an asphalt and cement road, of course, it is better to build a railway, and at the worst, it is better to build a good sand and gravel road.

Han Huanzhang has always been a little jealous of Ma Fen, and in the face of Ma Fen's fierce gaze, Han Huanzhang was a little distracted. But Han Huanzhang has a natural penchant for some non-mainstream things, so he combined Tang Kai's reason for repairing the "Greek track" with his own understanding, and Chen said the reason:

"Ma Dao, you see, the asphalt road you are talking about, there is very little asphalt in the world now, and it can be said that it will be used in shipbuilding in the future. As for cement, Tang Kai has calculated that the cement road must be at least four meters wide, and the rural road in the 21st century is four meters wide, and it is necessary to build a barge at a distance to make two barges. Four meters wide and 2o centimeters thick road, one meter is o.8 cubic meters of concrete, not counting steel bars, one kilometer is 8oo cubic concrete, how much cement is this, almost 300 tons of cement per kilometer is gone, the Kra Isthmus here, the shortest straight line distance between the east and west coasts is 56 kilometers, but there is a slope to build the road, to turn around, really build it, 7o kilometers is not much, to build a cement road, at least 20,000 tons of cement, can you afford it! ”

In this way, it seems that the asphalt road and cement road cannot be repaired. It has been previously surveyed that there is a trench on the west coast of the Kra Isthmus that is deep in 6 places, and it is the closest to build a road from this trench to the east coast, but there are hills in between, and the road that is finally built is not 7o kilometers but at least 65 kilometers.

"You don't need 2o centimeters thick, I think 1o centimeters is enough, and the carriage of this year is only one or two tons of load, and 10,000 tons of cement is enough."

"Ma Dao, a ton of cement is transported here, it costs almost 15 taels of silver, 1.5 million taels of silver, and sand and gravel labor, and I am afraid that I can't stop two million taels of silver."

When Ma Fen heard it, this was simply an astronomical amount, and it seemed that it would not work to build a cement road.

"Then build a simple road with sand and gravel first, you didn't look at the simple roads built in Yunnan and Sichuan during the Anti-Japanese War, and they can't still transport a large amount of munitions and materials!"

"Ma Dao, Tang Kai's rail plan, in fact, is still good, only 2 and a half tons of cement per kilometer, can build this groove rail road, 1780 tons of cement, this cost can be afforded, after completion, it is definitely better than the sand and gravel simple road, the rainfall here is really a bit terrifying, the sand and gravel road in the mud is guò how to guarantee, I think it is still 'Greek track', and, according to Guo Huazhang, the Qin Dynasty had 'car on the same track', do you know why 'car on the same track', hehe! In essence, the Qin Dynasty was almost also rail transportation. ”

"Nonsense, there is any rail transit in the Qin Dynasty!"

"Sue you, in the Qin Dynasty, they were all dirt roads, and after the wheels were repeatedly crushed, there were two concave hard lanes, which is equivalent to having rails! Then, with this rail, the transportation efficiency is improved and the wear and tear of the vehicles is reduced, so Qin Shi Huang must order the 'car on the same track'. ”

Recently, Guo Huazhang and Han Huanzhang have been very close, but I didn't expect Guo Huazhang to find out the historical reasons for supporting "rail transit", which made Han Huanzhang have a good impression of Guo Huazhang.

"The dirt roads of the Qin Dynasty are so good, doesn't that just show that the gravel roads are enough for carriage transportation."

Ma Fen is admitting death, Han Huanzhang frowned, and said in his heart, Qin Shihuang's northern China is not like the Malay Peninsula in the continuous rainy season, Guo Huazhang said that the road situation of the Great Song Dynasty, compared to the cement roads in the Kaohsiung Special Economic Zone, the dirt roads in the Great Song Dynasty, or the gravel roads, are definitely a nightmare for carriage transporters, so in the Great Song Dynasty, the most effective means of transportation is shipping.

Tang Kai is vigorously promoting the rail transit plan, while Ma Fen is strongly opposed. Wang Feng was skeptical of the retro rail traffic, and Liu Wenbing was the same, feeling that the retro style had no future.

Of course, the design of the rail has been very different from the "Greek rail", the rail is equivalent to the shape of the angle steel from the cross-section, the rail is opposite to each other, the protruding part is on the inside, and the wheel rim is limited by the protruding part, which can only rotate on the cement section of the pavement, but although there are differences in form, the principle is no different from the "Greek rail".

On this day, Liu Wenbing's condition suddenly took a turn for the worse, and after foaming at the mouth, he fell unconscious.

Han Huanzhang and Wang Feng both rushed to Liu Wenbing's house to bid farewell to Liu Wenbing. The two of them walked out and walked in, and their hearts were extremely heavy.

Liu Wenbing finally woke up, and as soon as he woke up and saw Han Huanzhang and Wang Feng, he said very depressedly:

"I can't do it! I was really reluctant to leave the 12th century, which should have made a difference. ”

"Don't! Other! Don't you see your spirits are much better! It's okay, just hold on a little longer and it'll be over. ”

In the face of Wang Feng's persuasion, Liu Wenbing shook his head and said:

"I know this is a return to the light, my energy has been drained, I know, but I am very reluctant."

Seeing that Han Huanzhang and Wang Feng's eyes began to get wet, Liu Wenbing struggled and said:

"That, Lao Han, don't do anything 'retro rail transit', there is no future."

Facing the dying man, Han Huanzhang could only nod. Wang Feng couldn't help but fall tears at this time, but when he realized that Liu Wenbing was not dead, he quickly wiped his eyes and pretended to laugh:

"Yes, yes, yes, if we want to build cement roads, we are not short of money."

Liu Wenbing was satisfied and said a good word, and then passed out again.

However, Liu Wenbing did not die in the end, but recovered a little slower, while Ma Fen and Tang Kai got better very quickly, in fact, this time the crossing made all the traversers go through a powerful electromagnetic baptism, and their physical qualities have been greatly improved, so they can carry this malaria. As for the other patients, only Bai Er, a guy with a strong body, came over.

What he didn't expect was that after Liu Wenbing got out of the sea of suffering, his attitude changed 180 degrees, from vigorously opposing "retro rail transportation" to sparing no effort to support.