Weird Three Kingdoms

Chapter 1875 Hangu Evolution, Crooked Neck Technology
The reason why Hangu Pass is famous all over the world is that during the Warring States period, it became the choke point of the six eastern countries, the east gate of Qin State, and an important pass for Qin State to resist the attack of the six Shandong countries. Basically unified, the status of Hangu Pass has actually begun to decline.

And because the geography of Qin Hangu changed later, Emperor Wu of the Han rebuilt a new Hangu Pass at the current location, which is about [-] miles eastward from Hangu Pass in Qin Dynasty.

Fei Qian stood on the flat platform of the Chou Sang Plain, watching the cracks formed by the erosion of the Chou Sang Plain by the wind and rain.This is a typical area of ​​the Loess Plateau. Although the top is relatively flat, it is very high. These large and small cracks are almost steep, straight up and down, forming a natural barrier.

This is not the first time Feiqian has come to Hanguguan, but every time he comes here and sees such a scenery, he can't help but feel some emotion in his heart.

The big river, that is, the Yellow River, flows from the north of Chousangyuan, which creates an extremely difficult environment for the people of Shandong who attack from east to west, because there is no other way to go from Shandong to Guanzhong, only through the This thick mulberry crack.Moreover, Han Valley in Qin Dynasty is more dangerous than Han Valley, but there is no immutable road in the world, and naturally there is no grand pass that will not change for thousands of years.

Fei Qian looked at Xu Chu who was standing behind him with Wei Du, and then focused his gaze on the big river to the north.This guy Xu Chu publicly stated after the competition that he himself did not know how to command soldiers, so Fei Qian naturally put Xu Chu in his own guard, which was somewhat interesting.Maybe Xu Chu really doesn't understand the commander, or Xu Chu deliberately exposed his shortcomings after showing something...

Hmm, maybe that's a good idea too.

People can't be too strong, too strong have no friends.

It’s as if Wei Du and Xu Chu are getting acquainted with each other now, calling them brothers and sisters. Wei Du also said that after arriving in Chang’an, Guanzhong, he would invite Xu Chu to eat meat buns... The straight-hearted Wei Du obviously thinks that meat buns are the best food Yes, there is meat and noodles and you are full. After all, if you go to a restaurant to let go of your stomach and eat a meal, a big-bellied man like Wei Du may have to eat three or four months of salary, plus Xu Chu, Wei Du In the second half of the year, [-]% will drink northwest wind.

For Xu Chu, obviously what to eat is not important, the important thing is to make friends, so naturally there is nothing wrong with it, and he also said that if he received the salary, he would invite Wei Du to drink again and again...

A fence needs three stakes, and a pass needs terrain.

Qin Han Valley was abandoned due to the terrain, and now it is Han Han Valley's turn.

The river is rushing, day and night. On the one hand, the Yellow River has eroded the Loess Plateau, and on the other hand, it is constantly cutting down. As a result, the water level of the Yellow River is lower than that in the Spring and Autumn Period and the Warring States Period. part of...

In addition, because the population of Hongnong in Guanzhong was larger than that in the Qin Dynasty, before new energy sources were developed, burning wood and charcoal became the only means of surviving the cold in winter, plus housing construction The living needs of utensils and so on have led to a large number of felling of the ancient forests on the Loess Plateau, which further destroyed the water and soil, and also caused gaps in the vegetation in some places on the Chousang Plain, which is no longer airtight. The forest can also allow soldiers to detour.

Tai Shici took Fei Qian to see the terrain changes here, just to let Fei Qian know that the Hanhangu Pass is like a wall that has been around for a long time. Not a lot.

"Ziyi..." Fei Qian called Tai Shici lightly. The sound was like the sound of water coming from the Yellow River. Although it was not loud, it was impossible to ignore.

"The subordinates are here." ’ Tai Shici answered with cupped hands.

Fei Qian raised his hand, pointed to the Yellow River beach, and then pointed to his feet, "Here, just build a sentry post and a beacon tower..."

Tai Shici was stunned for a moment, and said: "If this is the case... it can only be used as an early warning..." Tai Shici's original idea was to build a defense line here in the north of Chousangyuan. The exposed river shoal below gave a strong blow, forming an effective kill. As a result, Feiqian only said to build a beacon tower, and the gap is naturally a bit far.

What's more, if it is only to build a beacon tower, Tai Shici can decide by himself, so why ask Fei Qian to come here to check it out?
Fei Qian smiled, and said: "The passes of the world, depending on the time and place, there is no long-term invincible place... Don't worry about it, Ziyi, just like an old house with cracked beams, you need to repair the walls, and you need to repair the beams. Tidying up the tile eaves is not as good as building a new one..." Fei Qian naturally knew what Tai Shici meant, but because the Hanhangu Pass was indeed not suitable for use as an important defensive base due to the change in terrain.

Efforts to maintain and tinker are just barely prolonging a period of time. After all, changes in weather, geomantic terrain, and manpower cannot be changed in a short period of time.Even if it is afforestation, it will take at least a dozen or 20 years to see a little effect...

Fei Qian looked at Tai Shici and frowned slightly, and continued: "Someone has ordered Yang Dezu to lead Henan Yin... here in Hangu... Ziyi can order a general to garrison, and then move the army to Shan County..."

"Shaan County? 』Tai Shici was taken aback.Back off so much?Shanjin is located in Shanxian County, which is also an important ferry to Hedong, and it can be regarded as a very important node, but it is a little far away from Hangu Pass, and there are two big counties in the middle, one is Xin'an and the other is Mianchi.

"Shaan County, Shanjin, Tongguan..." Fei Qian roughly gestured in the air, "Three places are integrated, you can secure Guanzhong, guard the East River, and Hongnong..." Fei Qian chuckled, "And with Yang... 』

It is impossible to completely abandon Hangu Pass.Although Fei Qian has such courage, Yang obviously does not, so I still need to think about it, and put it here if there is any.It's like Dafei in the game of Go, if there are faint connections, it depends on the opponent's next move.

Both Mianchi and Xin'an were specially planned by Fei Qian for the Yang family. Of course, this is not a very favorable condition, nor is it because Fei Qian has any good feelings for the Yang family, but for the preparation of the next plan.At the same time, if the weight of Hangu Pass is not revoked, on the one hand, because of the change of Hangu's topography, Feiqian will have to continuously increase the number of soldiers invested here. This is an invisible burden, and this burden will be mostly increased. Guanzhong is on the head, so it is better to simply distribute part of this burden and let Hongnong Yang bear some of it.

On the other hand, after Tai Shici moved to Shan County, the distance between Guanzhong and Guanzhong was much closer. In addition, Shanjin can also easily reach Hedong. The use efficiency of grain and grass will be higher and better.

There is another hidden factor, that is, if the bait is not given, the Yang family will naturally not be willing to take out the family property to resume construction. Mianchi and Xin'an are the bargaining chips given to the Yang family in advance, just like 996. If you give enough, it will be a blessing. But many people only remember to desperately demand 996 from employees, but forget to give the money, or they don’t want to give it at all...

What Guo Jia said before is very good, that is, everyone has a basic disk.Cao Cao’s basic plan is Yanzhou Yuzhou, Feiqian’s basic plan is Bingbeiguanzhong, and the Hongnong Yang family, of course, is Hongnong. If they don’t give it to Luoyang Xin’an Mianchi, the Yang family will be willing to make selfless contributions ?

With the current situation in the world, it is undoubtedly difficult for the Yang family to turn around. First, there is not much land, and the land of Hongnong has been tossed two or three times by Dong Zhuo and Xiliang. Yang Zhen and Yang Xiu went to the front to kill people, right?But I hope this thing is very subtle, just like how many people drifted north and drifted deep. At the beginning, I felt that I could take root and sprout, that I could do it, and that some sunshine would shine...

However, we forget that the sun is actually vicious, and its ultraviolet rays are very strong.

In the Shandong area, Yuan Shao fell, Cao Cao flourished, and the surroundings were stable. With the Hongnong Yang family as a buffer, Fei Qian planned to climb the technology tree for a period of time in the next period of time. This is the next step The most important thing.

The technology tree of the Han Dynasty is really strange.

Have you ever seen the crooked neck tree at the gate of Liu Bei's hometown? In general, the technology tree in the Han Dynasty looked like that.Obviously, the foundation was very thick at the beginning, and the trunk was very thick, and then it turned a corner halfway, as if hitting an air wall, and then grew to another direction.

In the Han Dynasty, there was a mirror, a mystery of a bronze mirror, which was not solved until the later modern times.The "bronze light-transmitting mirror" known as the magic mirror of the Western Han Dynasty, at first glance, this kind of bronze mirror is not much different from ordinary bronze mirrors, but the secret is that when this kind of bronze mirror is placed vertically and horizontally, it will appear in a certain place. Under the light incident angle, although the light is shining on the front mirror, the patterns and patterns behind the mirror will miraculously be reflected on the wall or background opposite to the mirror!
It is not difficult to do this with glass mirrors, but the problem is the material of copper...

In the following dynasties, Shen Kuo and Zhou Mi in the Song Dynasty, Ma Jiuchou in the Jin Dynasty, Wu Qiuyan in the Yuan Dynasty, Fang Yizhi and He Mengchun in the Ming Dynasty, Zheng Fuguang in the Qing Dynasty, and a large number of modern scientists at home and abroad, All have conducted systematic and comprehensive research on this kind of magic mirror.

It was not until the 80s in modern times that the joint efforts of Shanghai Museum and Shanghai Jiaotong University finally figured out the principle of this magical perspective effect. In fact, it is a special effect produced by the joint action of mechanics and optics. ...

But the mirror of his mother was made in the Han Dynasty, and it used mechanics and optics that would only be understood by later generations in the 80s. As a result, there was no follow-up branch.

And something like a seismograph.

There is also a car.

There are even hydraulic systems such as waterwheels and cones that were supposed to shine and provide great assistance in production and life. After a rough study like that, I just tasted it, and there is no follow-up version update...

Such powerful physics in the Han Dynasty ended up grinding mirrors, making villains beating drums and being put in warehouses.

Astronomy, to speculate on the rise and fall of the world, whether the emperor's second child will work at night.

There was also chemistry in the Han Dynasty, and it was used to make alchemy and sell five dispersions.

It's really crooked to the point of no reason.

Of course, it is impossible for Fei Qian to fully spread it immediately, but there are two directions that can be focused on, one of which is medicine.Fei Qian has been asking people to look for Hua Tuo, but he can't find it all the time. He heard where Hua Tuo was at the front foot, and Hua Tuo left when the people behind him went.

Hua Tuo, Ma Fei San.

In the Han Dynasty, Mafeisan was like jumping off a building for a big sale. You don’t need 998, and you don’t need 668. You can take it home as long as you only need 98... No, you don’t even need 98. Hua Tuo will give it to everyone for free!
However, for a long time in Western medicine, the methods used to perform operations and alleviate the pain of patients are both funny, ridiculous, cruel and helpless.Either use heavy objects to oppress the patient's nerve trunk to make the limbs numb and lose consciousness, or directly apply "bloodletting therapy" to the patient to make him unconscious due to blood loss, and then perform the so-called "painless" operation on the patient.

Even in order to achieve a paralyzing effect, opium and marijuana, which will last forever and cause endless harm, was released. Even so, there was still an operation, and even the patient, doctor and nurse died, and the mortality rate reached 300%...

Of course, it is also possible that Hua Tuo was deified and exaggerated by the follow-up people, but if it is said that Hua Tuo did have some skills and dared to develop surgical operations, then is there a possibility that in the current Han Dynasty, medical science can be started? Just don't mess around, and form a relatively complete medical system with both internal and external training, so that later Lu Xun students will not complain about the so-called "original cricket"?

The improvement of medicine will greatly extend the life span of human beings, and will also reduce the risk of dying from a cold. Fei Qian feels that it is an important subject that Dahan needs to focus on at the moment.

Another direction is mathematics.

Mathematics is known as the foundation of all sciences. "Zhoubi Suanjing" and "Nine Chapters of Arithmetic" can be regarded as the shining pearls of ancient arithmetic. They are gorgeous and gorgeous. There are four arithmetic operations with fractions. Today there are operations, square extraction, cubic extraction, and surplus and deficiency operations. , various area and volume formulas, solutions to linear equations, the rules of addition and subtraction of positive and negative numbers, and Pythagorean solutions, forming an independent system centered on calculations that is completely different from ancient Greek mathematics.

Then, mathematics has grown crooked again, and it has become a tool for oppressing the people, calculating money and food, and embezzling for personal gain. It has become the end of the "six arts". petty official...

The torrential water of the Yellow River in the distance under the feet does not stop.Now that Fei Qian has someone on hand, he also has the conditions to carry out these things, and these things, Fei Qian thinks, are far more interesting than killing people.

"Ziyi, take someone to go first, and you will return to Guanzhong after you arrange the military affairs!" Fei Qian patted Tai Shici on the shoulder, "I have been fighting for several years, and now I am taking a break. It is also time to reward meritorious deeds!" 』

(End of this chapter)