Hangu Pass is famous all over the world because during the Warring States Period, it became a choke point for the Six Eastern Kingdoms. It was the eastern gate of the Qin State and an important pass for the Qin State to resist the attacks of the Six Kingdoms of Shandong. In the Han Dynasty, with the
The world was basically unified, and the status of Hangu Pass had actually begun to decline.
And because the geography of Qin Hangu Pass changed later, Emperor Wu of the Han Dynasty rebuilt a new Hangu Pass at the current location, which was about three hundred miles eastward from the Hangu Pass of the Qin Dynasty.
Fei Qian stood on the flat plateau of Choosangyuan, looking at the cracks formed by wind and rain erosion in Choosangyuan. This is a typical Loess Plateau area. Although the top is relatively flat, the height is very high. These large and small
The small cracks are almost vertical, straight up and down, forming a natural barrier.
This is not Fei Qian's first visit to Hangu Pass, but every time he comes here and sees such scenery, he can't help but feel some emotion in his heart.
The big river, the Yellow River, flows from the north of Choosangyuan. This creates an extremely difficult environment for the Shandong people who attack from east to west, because there is no other way to go from Shandong to Guanzhong except through
This is the crack in the thick mulberry plain. Moreover, the Han Valley in Qin Dynasty is more dangerous than the Han Valley in the Han Dynasty. However, there are no unchanging roads in the world, and naturally there are no great passes that will not change for thousands of years.
Fei Qian looked at Xu Zhu who was standing behind him with Wei Du, and then focused his eyes on the river to the north. Xu Zhu publicly stated after the competition that he did not know how to command soldiers, so
Fei Qian naturally placed Xu Zhu among his own guards, which was somewhat interesting. Maybe Xu Zhu really didn't understand commanders, or maybe Xu Zhu deliberately exposed his shortcomings after showing something...
Well, maybe this is also a good idea.
You can't be too strong. If you are too strong, you will have no friends.
Just like now Wei Du and Xu Zhu have become familiar with each other, and they are brothers. Wei Du also said that after arriving in Guanzhong Chang'an, he would treat Xu Zhu to eat meat buns... Wei Du, who is straight, obviously thinks that meat buns are the best.
After all, if you go to a restaurant and eat a full meal, a big-bellied man like Wei Du will probably have to eat three or four months' salary, plus many other things.
, the capital of Wei was probably affected by the northwest wind in the second half of the year.
For Xu Zhu, it is obvious that what he eats is not important. What is important is making friends, so naturally he has everything. He also said that if he received his salary, he would invite the capital of Wei to drink again...
The fence requires three stakes, and the pass also requires terrain support.
Qinhan Valley was abandoned due to terrain reasons, and now it is the turn of Hanhan Valley.
The river is rushing day and night. On the one hand, the Yellow River is eroding the Loess Plateau, and on the other hand, it is also constantly cutting downwards. As a result, the water level of the Yellow River is lower than during the Spring and Autumn Period and the Warring States Period, and the river channel that was originally adjacent to the Choosang Plain is exposed.
part of...
In addition, because the population in the Hongnong area of Guanzhong was larger than that of the Qin Dynasty, before new energy was developed, burning wood and charcoal became the only way to survive the cold in winter. In addition, housing construction
The living needs of utensils and other equipment have led to a large number of ancient forests on the Loess Plateau being cut down, which further damaged the water and soil. It also caused gaps in the vegetation in some places on the Choosang Plain, and it was no longer airtight.
The forest allows the soldiers to take a detour.
Taishi Ci took Fei Qian to see the changes in the terrain here, in order to let Fei Qian know that Hanhan Valley Pass is now like an ancient wall. Although it still looks like a wall, there are still gaps for air leakage in all directions.
Quite a few.
"Ziyi..." Fei Qian called Tai Shici lightly, and the sound was like the sound of water coming from the Yellow River. Although it was not loud, it was impossible to ignore.
"My subordinate is here," Taishi Ci replied with his hands raised.
Fei Qian raised his hand, pointed at the Yellow River beach, and then pointed at his feet, "Here, just build a sentry and a beacon tower..."
Taishi Ci was stunned for a moment and said: "If this is the case... it can only be an early warning..." Taishi Ci's original idea was to build a defense line north of Choosangyuan. Even if he couldn't build a city wall, he could still rely on the terrain difference to provide protection.
The exposed river tidal flat below gave a strong blow, causing effective damage. In the end, Fei Qian only said to build a beacon tower, which was naturally a bit far behind.
What's more, if it's just a beacon tower, Taishi Ci can make the decision himself, so why ask Fei Qian to come here specially to check it?
Fei Qian smiled and said: "The pass in the world depends on the time and the place, and there is no place that can be invincible for a long time... Ziyi doesn't have to worry about it. Just like the old beams in the house are cracked, and the walls need to be repaired, the beams also need to be repaired. It can't be said that there will be more."
Tidying up the tile eaves is not as good as building a new one..." Fei Qian naturally knew what Taishi Ci meant, but it was just because Hanhangu Pass was no longer suitable for use as an important defensive base due to changes in topography.
Trying to maintain and tinkering can only barely extend a period of time. After all, changes in weather, geomantic omen, and terrain cannot be changed by manpower in a short period of time. Even if it is afforestation, it will take at least ten or twenty years to see any changes.
Little by little results...
Fei Qian looked at Tai Shi Ci and frowned slightly, and continued: "I have ordered Yang Dezu to lead Henan Yin... Here in Hangu... Ziyi can order a partial general to garrison, and then move the army to Shaanxi County..."
"Shaanxi County?" Taishi Ci was stunned. So much retreat? Shaanxi County is located near Shaanxi and Jin, which is also an important ferry to Hedong. It is also a very important node, but it is a bit far from Hangu Pass, and there is a gap in the middle.
There are two large counties, one is Xin'an and the other is Mianchi.
"Shaanxian, Shaanjin, Tongguan..." Fei Qian made a general gesture in the air, "Three places are integrated, we can consolidate Guanzhong and guard the east of the river. As for Hongnong..." Fei Qian chuckled, "And with the Yang family...
』
It is not possible to completely abandon Hangu Pass. Although Fei Qian has such courage, Yang obviously does not, so he still needs to think about it and put it here. It is like Da Fei in Go.
If it is connected or not, it depends on the opponent's next move.
Mianchi and Xin'an were specially planned by Fei Qian for the Yang family. Of course, these are not very generous conditions, nor are Fei Qian's affection for the Yang family, but preparations for the next step. At the same time,
, if the weight of Hangu Pass is not revoked, on the one hand, due to the changes in the terrain of Hangu, Feiqian will continue to increase the number of soldiers invested here. This is an invisible burden, and most of this burden will be added to
Guanzhong is on top, so it is better to simply distribute part of this burden and let the Hongnong Yang family bear some of it.
On the other hand, after Taishi Ci moved to Shaanxi County, the distance from Guanzhong was much closer. In addition, Shaanxi and Tianjin could also easily reach Hedong. In every aspect, it reduced the transportation pressure on military supplies, making
The efficiency of using 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 be reluctant to use up the family wealth to resume construction. Mianchi and Xin'an are the chips given to the Yang family in advance, just like 996. If they are given enough, it will naturally be a blessing.
But many people only remember to demand 996 from employees, but forget to give money, or do not want to give it at all...
What Guo Jia said before is very good, that is, everyone has a basic base. Cao Cao's basic base is Yanzhou and Yuzhou, Fei Qian's basic base is Bingbei Guanzhong, and the Hongnong Yang family, of course, needless to say, that is
Hongnong, if we don't give Luoyang Xin'an Mianchi, will everyone in the Yang family be willing to make selfless contributions?
In the current situation in the world, if the Yang family wants to turn around, it will undoubtedly be difficult to reach the sky. Firstly, there is not much land, and the land of Hongnong has been tossed two or three times by Dong Zhuo and Xiliang. Secondly, there is no general in hand, so it cannot be expected.
Yang Zhen and Yang Xiu go to the front line to kill people, right? But I hope this thing is very subtle, just like how many northern drifters drifted up and down, and at the beginning they felt that they could take root and sprout, that they could do it, and that some sunshine would make them shine.
…
However, we forget that the sun is actually very vicious and its ultraviolet rays are very strong.
In the Shandong area, Yuan Shao fell, Cao Cao became prosperous, and the surrounding areas were stable. With the Hongnong Yang family as a buffer, Fei Qian was prepared to climb the technology tree for a while in the next period of time. This is what will happen next.
The most important thing.
The technology tree of the Han Dynasty is really weird.
Have you ever seen the crooked-necked tree in front of Liu Bei's hometown? Generally speaking, the technology tree of the Han Dynasty looked like that. The foundation was thick and the trunk was thick at first, but then it turned a corner as if it hit a wall of air halfway.
Then it grew in the other direction.
There is a mirror in the Han Dynasty. The mystery of the bronze mirror has been studied until modern times before it was solved. The "bronze translucent mirror" known as the magic mirror of the Western Han Dynasty. At first glance, this kind of bronze mirror is the same as the ordinary bronze mirror.
There is not much difference, but the secret is that when this kind of bronze mirror is laid vertically and flat, at a certain angle of light incidence, although the light shines on the front mirror, the patterns and patterns on the back of the mirror will miraculously change.
Reflected on the wall or background opposite the mirror!
It is not difficult to do this with glass mirrors, but the problem is the material of copper...
In the subsequent dynasties, there were 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 scientists at home and abroad in modern times.
All have conducted systematic and comprehensive research on this magic mirror.
It was not until the modern 1980s that the joint efforts of the Shanghai Museum, Shanghai Jiao Tong University and other institutions finally clarified the principle of this magical perspective effect, which is actually produced by the joint action of mechanics and optics.
Special effect……
But this damn mirror was made in the Han Dynasty, using mechanics and optics that would only be understood by future generations in the 1980s. As a result, it didn’t have any subsequent branches. It just turned a corner, and I don’t know where it ended up.
There are also things like seismometers.
There are also rickshaws.
There are even hydraulic systems such as waterwheels, water cones, etc. that were supposed to shine and provide huge assistance in production and life. After a rough study of it, they stopped briefly and there were no subsequent version updates...
Physics was so powerful in the Han Dynasty, but it ended up polishing mirrors, playing drums, and being put in a warehouse.
Astronomy, to speculate on the rise and fall of the world, whether the emperor's second child will work at night.
Chemistry also existed in the Han Dynasty, and then it was used to make elixirs and sell five-color powder.
It's really so crooked that it makes no sense.
Of course, it is impossible for Fei Qian to launch a full-scale rollout immediately, but there are two directions that can be focused on, one of which is medicine. Fei Qian has been asking people to find Hua Tuo, but he has never been able to reach the front foot.
After hearing where Hua Tuo was, Hua Tuo left again when the people behind him left.
Hua Tuo, Ma Fei San.
In the Han Dynasty, Ma Feisan was simply sold off the building. You don’t want 998, or 668, you can take it home as long as 98... No, you don’t even want 98, Hua Tuo gives it to everyone for free!
For a long time, Western medicine has used methods to perform operations and relieve patients' pain, which are both funny, ridiculous, cruel, and helpless. They may also use heavy objects to compress the patient's nerve trunks to numb their limbs.
, lose consciousness, or perform "bloodletting therapy" directly on the patient, make him coma due to blood loss, and then perform so-called "painless" surgery on the patient.
Even in order to obtain the paralysis effect, opium, marijuana, etc. were released, which will last for future generations and cause endless harm. Even so, there is still an example of an operation in which the patient, doctor and nurse all died, with a mortality rate of 300%...
Of course, it is also possible that Hua Tuo was deified and exaggerated by subsequent people, but if Hua Tuo did have some abilities and dared to develop surgical procedures, then is it possible that in the current Han Dynasty, medicine could begin
Just stop messing around and form a relatively complete medical system that is both internal and external, so that later classmates of Lu Xun will not complain about the so-called "original cricket"?
The improvement of medicine will greatly extend human lifespan, and will also reduce the risk of dying from a cold. Fei Qian feels that it is an important subject that the Han Dynasty needs to focus on at the moment.
Another direction is mathematics.
Mathematics is known as the foundation of all sciences. "Zhou Bi Suan Jing" 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 of fractions. Today there are arithmetic, square root, cube root, and surplus and deficiency.
, various area and volume formulas, solutions to linear equations, addition and subtraction rules for positive and negative numbers, Pythagorean solutions and other calculation methods have formed an independent system centered on calculations that is completely different from ancient Greek mathematics.
Then, mathematics became crooked again and became a tool to bully the people, calculate money and food, and embezzle for personal gain. It became the end of the "six arts". Even in the imperial examination era, the most talented people in the math department were decentralized to work as a money and food calculation person.
petty officials...
The surging Yellow River in the distance beneath your feet is flowing endlessly. Fei Qian now has people on hand and has the conditions to carry out these things, and Fei Qian feels that these things are far more interesting than killing people.
"Ziyi, I will take the first step. After you have arranged the military affairs, you will return to Guanzhong!" Fei Qian patted Taishi Ci on the shoulder, "We have been fighting for several years, and now we have a temporary break. It is also the time to reward based on merit!"
