Daqin Engineers

Nirvana does not actually need to be mined from Taiyuan.

Taiyuan is 500 kilometers away from Yunzhong County. Although the nirvana can be dug out and can be used at almost no cost, if it is transported from Taiyuan, it will take more than ten days, and the transportation labor and cost are also not small.

More importantly, if Shen Bing transports Nirvana from Taiyuan for a long time and on a large scale, it will not take long for Zhao Gao and Li Si to pay attention, and the investigation will naturally increase the trouble.

This may cause Shen Bing to be unable to keep secrets.

The solution is very simple, from Yunzhong County more than 100 kilometers south to Hequ Village.

The reason why Hequ Village is called Hequ Village is because the Yellow River almost circled a semicircle here and then proceeded along the original trend.

Shen Bing remembered that this was the northernmost point of the famous Hedong Coalfield in Shanxi.

In other words, there must be coal underneath. One disadvantage is that it is generally deeper, a dozen steps away from the ground.

But this is not a shortcoming. For Shen Bing, it means digging down layer by layer, and digging into the coal seam within a few days.

As a result, the transportation time is shortened to two or three days.

Fusu was surprised at this and asked:

"How does the general know that there is Nirvana here?"

Shen Bing’s answer is:

"Before I heard people say that Nirvana was cultivated in this area when farming."

"It's just luck that I waited until I found Nirvana."

Fusu was dubious, but there was no other reasonable explanation besides Shen Bing's statement, so he could only believe it.

Another disadvantage is that this place is already within the scope of Yanmen County. If Shen Bing, the Northern General, acted here, he would have exceeded his authority.

This is not difficult to solve.

Shen Bing only needs to find an excuse to inform the Yanmen County Guardian...

"Hequ Village is the center of supply for Yunzhong County."

"Because I am worried about the Xiongnu cavalry's sneak attack and intrusion, I have to station three thousand troops here to prevent accidents!"

This excuse is reasonable and reasonable, and there is no reason for the Yanmen County prefect to disagree.

At the same time, these three thousand soldiers stationed here to build a walled city will not arouse suspicion.

It's just that this city wall was not built to defend against the Huns, but to mine Nirvana inside.

Shen Bing used the Liang Army, and all the original Wei State descended soldiers.

The reason why the original Wei State was chosen to surrender troops was because Shen Bing wanted to guard against Li Si and Zhao Gao.

Wei Bing is all picked by Shen Bing and Wei Wei, and it is unlikely that they will be bought for Li Si and Zhao Gao.

But Shen Bing also knew that it was very difficult to conceal this matter... It is not a secret if there is a third person knowing it, not to mention that thousands of people are needed to mine.

Therefore, Shen Bing also left another hand to cover up: Nirvana is widely used as fuel for military and civilian fire and heating.

One day if Zhao Gao and Li Si discover something abnormal, and when they inquire, their first thought will be...Shen Bing's mining of nirvana is just to meet the needs of cooking and heating.

This is quite normal, because Yunzhong County has more desert and grassland terrain with fewer trees.

If trees are to keep crafting equipment and city walls, then Nirvana will naturally be used for fire and heating.

As a result, the sky over Yunzhong County was immediately filled with a strong smell of burning coal, whether it was day or night...lighting a fire for cooking during the day and heating at night.

Shen Bing, who was not accustomed to this kind of smell, was so dizzy for a while that he couldn't breathe.

But for the sake of future development, I can only endure it.

Especially at this time, the Huns are already ready to do something...

As soon as Shen Bing gave up the back set and Jiuyuan, the Xiongnu immediately followed up, and then pushed the boundary line all the way to Yunzhong County.

Of course the Huns did not attack cities, and the Huns were not good at attacking cities.

Not to mention the Warring States, even in the peak period of the Mongolian iron cavalry nomads, they are also not good at siege.

The Mongols used their cavalry maneuverability in large-depth tactics.

To put it simply, every time when the grain is harvested, the enemy’s city will be looted, and the ones that can be taken are taken away, and the ones that cannot be taken are burned up, and they even rush into the enemy’s line of defense to go around the enemy’s line of defense. The lap returned with full load.

Maybe the loss once or twice is still bearable.

But year after year, day after day... The crops in this place have been cropped for years, and the people who are cultivating outside the city are still in an unprotected state, being burned and looted by enemy horses. How can the people bear it?

So the people had to move out to survive, and the city became an empty city within a few years.

Mongolia did not need to do this in the middle and late stages, because after occupying a large area of ​​Song Land and controlling many Han people, they could use the Han people to form a slave army for them to attack the city... The Yashan naval battle that marked the demise of the Song Dynasty was fought by Han Zhang Hongfan.

The Huns at this time were similar in strategy to the early Mongolian.

Similarly, cavalry crossed the city and went deep into the Central Plains to plunder.

This may not be a "strategy", but the nature of the nomads to plunder...At this time, they don't even know what a "strategy" is.

Fortunately, the Huns acted very cautiously. They just sent a small group of cavalry over the plunder and quickly returned.

This is because they had been in Li Mu's ambush many times before, so they were worried that they would defeat the battle again.

On the other hand, it is not yet the season of grain harvest at this time, and even the raging southward looting will not yield much.

Therefore, Shen Bing also had some time to prepare.

Shen Bing handed the iron smelting matter to Bian and Owe to deal with.

Bian was the iron officer of Shouchun, and Shen Bing saw that he had some patience, so he took him with him...It is not difficult to want a few people as Shen Bing at this time.

Both Ben and Xiao have their own strengths: Ben is better at smelting iron and Xiao is better at casting. In addition, Ben has brought a group of apprentices from Shouchun, so the smelting and production of this ironware is not a problem.

As for the iron ore, Shen Bing doesn't need to hide it like a nirvana, he can make demands to Ying Zheng in an open and honest manner.

For example, the lack of agricultural tools in the north requires iron smelting to develop agriculture.

Another example is the need for minerals to relieve the worries of Yunzhong County and defend the city...

These are all normal, just as Xiang Yan also asked Ruyin and Chengfu to produce their own equipment when guarding the Ru water defense line.

Among them, arrows are especially useful. They are a weapon for defending the city and consume a lot. Thousands of defenders will shoot thousands of arrows in one salvo. If only transportation is required, it will increase the logistical burden and easily cause the defense. The city is in danger...

Once the arrows are used up and the logistics are not shipped?

Or is the transportation line cut off by the enemy or the arrow is robbed by the enemy?

Therefore, Yingzheng had no reason not to agree to Shen Bing's request, and immediately sent people to transport iron, copper, tin and other ores to Yunzhong County.

Far away areas are not even transporting ore, but refined iron, copper, tin... The geographical distance is inconvenient to transport, and transporting ore is too wasteful of capacity.