(Bill: 15 more.) ）

Wu Fanghai was very patient, explained in detail, and pointed out the key, deliberately cultivating Zhang Hao's war wisdom.

Zhang Hao also studied seriously. He understood that the way of fighting in the cultivation world, especially the way the Great Legion was fighting, was by no means simple.

Wu Fanghai took several classic wars as examples to give Zhang Hao the most intuitive understanding of the Eastern Crusade:

But it is said that the country of Taihua and the country of Canglan are very cheap.

Why?

Because people never take the initiative!

As long as they control the trade routes, they will be able to suck the marrow and perhaps huge resources of the Western countries little by little, and when the melons are ripe, they will have no trouble getting the vast land of the West.

Therefore, they deployed along the Great Snow Mountain and the Autumn Wind Ridge for generations. For thousands of years, this line of defense has really been impenetrable. All kinds of formations and outposts are endless.

The two countries also encourage non-governmental forces to go to the Great Snow Mountains and Autumn Wind Mountains as much as possible to train their offspring when cultivating their offspring.

In addition, many people, large and small families, etc., migrated to the foot of the mountain, farming, mining and so on.

Under various arrangements, there are few loopholes in the border line.

Western countries also sent experts to sneak attack, but after thousands of masters crossed the mountains and mountains, they were surrounded by tens of thousands of troops of the other side. Several sneak attacks were carried out but suffered heavy losses, and finally had to give up the sneak attack.

Wu Fanghai sighed: "In war, there is one thing that remains unchanged through the ages, that is: attack the enemy's shortcomings with your own strengths!"

So, what are the strengths of our West?

It's a lot of dark iron resources!

We can use Xuaniron to create huge and sharp war weapons, these war weapons can only be controlled in the Qi refining stage and foundation building stage, but they can cause fatal damage to the Jindan stage and even the Yuan Infant stage. ”

"So, we have to fight the Great Legion.

Use our masters to hold back the enemy's masters, and create a chance for a large number of grassroots soldiers to win.

This is our way of war.

This is also the most effective way of warfare that Western countries have summed up for thousands of years.

Victory needs to be created by grassroots soldiers. ”

............

Zhang Hao stood in front of the map all night, and did not accept the map until dawn and return it to Wu Fanghai.

Such a military map is a state secret.

Seeing Wu Fanghai away, Zhang Shengde finally breathed a sigh of relief, but grabbed Zhang Hao's shoulder tightly, "You're crazy." In two months, 5,000 tons of 95% Xuantie will be delivered to the imperial capital. This......

Also, we promised others a lot of dark iron, and there are thousands of tons!"

Zhang Hao smiled lightly: "Dad, if I say that within two months, we can produce 10,000 tons of dark iron, will Dad?"

"Really?"

"Of course, but we need enough raw materials, and the city lord alone will provide them. ”

"No problem. We can obtain raw materials through the Darksteel Guild. ”

Zhang Hao nodded, thought for a while and said, "Dad, the guild has a function, which is technical exchange." I think that now is the time to strike while the iron is hot, do a technical exchange, and consolidate the position of the Zhang family. ”

Zhang Shengde thought thoughtfully: "Then what technology are we going to disclose this time?"

"Ore crushing, spirit stone crushing, water separation and other production "means". The real technology is not disclosed. For example, blowing wind into molten iron, you can't say it. ”

Zhang Shengde thought about it, nodded in agreement, and handed it over to Zhang Hao to be responsible.

With the experience of the last public water forging technique, this time Zhang Hao first did a test by himself and figured out the situation.

............

At dawn, Liu Jingming, the city lord, was awakened. The emperor's edict really came: fully cooperate with the Zhang family to smelt the dark iron, and supervise the Zhang family, if there is any wrongdoing, it can be dealt with cheaply.

............

Early in the morning, the door of the Xuantie Guild was closed, and the people who came to purchase Xuantie were closed.

Speaking of which, since the establishment of the Xuantie Guild, although the price has increased slightly, the quality has also improved a lot, and the market has returned to order. For the time being, it was a happy scene.

Moreover, the price of Xuantie in Ninghe County is still the lowest.

The quality is good, the price is low, and the buyers are endless.

But this morning, the door of the Xuantie Guild was closed, and more than a dozen little masters in the foundation building period were guarding the gate.

Only members of the Xuantie Guild are allowed to enter, and the rest of the people are not allowed to enter.

"What's wrong?" Liu Xian of Yunying Commercial Bank looked dumbfounded.

Some time ago, the dark iron purchased on credit from Zhang's family was about to run out, and he was ready to come to buy it;

"I'm sorry, I'm sorry, can I ask the senior to come back tomorrow. Today we have something internally that needs to be rectified. We apologize for the inconvenience to seniors. Sun Xuan, the young master of Longyun Commercial Bank, came up and smiled.

"What's the matter?"

"Our internal affairs. Gongsun Xuan continued to accompany the smiling face.

"Okay. Liu Xian left helplessly.

At this time, inside the Xuantie Guild and inside the enchantment, it was crowded.

Today, the Zhang family will hold the first technical exchange meeting since the establishment of the Xuantie Guild, and all members of the Xuantie Guild can participate. There is only one point, this is an internal technical exchange meeting, and no secrets are allowed to be leaked to the outside world, and swearing.

"Quiet. On the high platform, Liang Siguang, as the head of the organization, shouted, "Let us welcome the representative of the Zhang family, Zhang Hao!"

Today, Zhang Hao will show us some of Zhang's Xuaniron smelting technology. ”

Everyone applauded, Zhang Hao walked up to the high platform step by step, returned the salute, and talked eloquently:

"One of the purposes of establishing the Xuantie Guild is to promote the advancement of Xuantie technology. And if technology wants to improve, it needs to communicate.

So today, I will show you the latest Xuantie smelting method of the Zhang family.

For example, how to directly smelt dark iron with a purity of more than 60% without forging!"

Swish!

Everyone's eyes suddenly brightened!

Although the water forging technique is good, it still needs to be forged, and the craftsmen are also very hard.

In fact, everyone has a lot of speculation about the Zhang family's dark iron smelting technology.

Unexpectedly, the Zhang family would take the initiative to make it public.

Zhang Hao does things very simply. After that, he smiled again: "Then, please take a good look." ”

The craftsmen of the Zhang family came to the stage, and some small smelting equipment was quickly put in place. The furnace is only a foot in size – or a large crucible is more appropriate.

The craftsmen are methodical, and Zhang Hao is in charge of explaining.

"We believe that there are three main sources of impurities in dark iron. In addition to what is commonly thought of as 'iron', there are also impurities from the ore itself, as well as impurities from inferior crushed spirit stones.

Then, if we can find a way to remove the impurities of iron ore and crushed spirit stone in advance, we can directly obtain high-purity crude iron. ”

"First of all, we select the highest quality ores. ”

"Secondly, iron ore should be crushed, preferably into a fine powder. ”

"Third, water separation, or flotation. When the water is selected, stir vigorously. Stone powder is lighter and can be carried away by the water, and what is left behind is called 'iron ore concentrate', or simply 'iron concentrate'.

Attention and amount of water during stirring.

The stirring is light, the amount of water is less, and the effect is not ideal.

Stirring is heavy and the amount of water is too much, which may bring unnecessary losses. ”

"At the end of the water separation, it should be precipitated and dried. ”

"Then there is the spirit stone. In order to smelt high-purity dark iron, we use spirit stones instead of non-inferior crushed spirit stones. Spirit stones also have to be crushed. ”

"Finally, there's charcoal. Usually charcoal, contains a high level of impurities. We use bamboo charcoal instead of charcoal. ”

"And then there's the flames. We replaced the earth fire with the flames generated by the spirit stones. ”

After that, Zhang Hao stood aside, and the craftsmen were nervously busy.

It was quiet below, everyone's eyes were bright, and their breathing was slow, for fear of disturbing the craftsmen.

For a while, inside the enchantment, there was only the sound of craftsmen busy.

Before you know it, it takes more than two hours for the boiling molten iron to be poured into thin pieces of iron, cooled, and distributed to everyone.

Suddenly there was an exclamation.

“61%！”

"It really smelts 60% of the crude iron directly!"

Zhang Hao stood on the high platform, and for the second time, he looked down on everyone from such a perspective.