The night was dark, but everyone's eyes were shining like night pearls.

Zhang Hao clasped his hands on his chest and stood aside and watched quietly - the first step was perfect!

One after another pieces of forged black iron were placed in front of Zhang Hao, Zhang Shengde, and Zhang Shengye.

"The basic purity is 93%, and the basic energy after forging can reach 95%. ”

"95% purity, reward 1 piece of spiritual sense. ”

"Purity 96%. Reward 3 spirit stones. ”

"Purity 94%...... Go back and keep forging it. ”

"97% purity. Reward 6 Spirit Stones. ”

"Purity 96% ......"

The different purities of the dark iron were sorted, and soon several small mountains were raised. But at this time, Zhang Shengde and Zhang Shengye looked calm, or rather, numb.

The craftsmen were excited, they worked miracles, and the rewards were great.

Zhang Shengye circled around the Xuantie several times, and suddenly became excited again: "The value of these Xuantie is enough to buy half of the town!"

Zhang Shengde was excited and did not lose his senses: "I'm afraid that it will bring us a catastrophe!"

Zhang Shengye calmed down instantly.

Zhang Hao was still a little puzzled: "Doesn't it mean that the reserves of Xuaniron are very rich and everyone can get involved! At present, these Xuantie add up to only 3,000 catties." ”

Zhang Sheng pulled Zhang Hao and introduced it in detail.

Let's talk about the currency first: low-grade spirit stones, middle-grade spirit stones, and high-grade spirit stones, and the three are 100 decimal system.

A pound of 60% pure black iron can mint 1,000 black iron coins, and two iron coins can buy about a pound of brown rice.

A pound of 60% purity dark iron is worth 1 low-grade spirit stone.

A pound of 70% pure black iron is worth 5 low-grade spirit stones.

A pound of 80% purity of dark iron "at least" requires 20 low-grade spirit stones.

When the purity of the dark iron exceeds 80%, the price will increase by at least 10 spirit stones for each point of purity.

And 90% purity Xuantie, because it can refine magic weapons, only accepts the price of medium-grade spirit stones, at least 10 medium-grade spirit stones, and 96% purity Xuantie, worth at least 70 medium-grade spirit stones!

96% purity of dark iron is at least 7,000 times the value of 60% purity, and the price may fluctuate a little, it may be tens of thousands of times!

Therefore, this small pile of Xuantie right now is a real mountain of wealth! Three thousand catties of Xuantie are worth at least 21 million spirit stones!

Zhang Shengde turned around and shouted: "Everyone, whether it is a guard or a craftsman, each person will be rewarded with two more lower-grade spirit stones, and those who participate in the smelting and forging of Xuantie will receive two more."

When the dark iron is sold in the future, everyone ...... Rise!salary!water!"

"Oh......" The craftsmen and guards jumped excitedly.

"It's all gone, what should you do? ”

Everyone dispersed in a hurry and began to get busy excitedly.

When there were only three people, Zhang Hao, Zhang Shengde, and Zhang Shengye, Zhang Hao couldn't help but ask: "Dad, second uncle, these craftsmen won't leak secrets?"

Zhang Shengye smiled: "Don't worry, everyone here has been screened layer by layer, and they have even sworn a poisonous oath." But there was a leak, and the whole family suffered. ”

"Ahh This... Too harsh, isn't it?" Zhang Hao was surprised.

Zhang Shengye smiled: "This is actually protection." Otherwise, someone will secretly kidnap their family members and threaten them.

And the whole continent of fertile soil is doing it. ”

"I see. Zhang Hao suddenly realized.

Different worlds have different rules, and you need to update your concepts.

Zhang Shengde stared at Zhang Hao with burning eyes: "Can you tell me about smelting Xuantie?"

"Dad, second uncle, I just thought like this: the main impurity of dark iron is iron, and iron will rust. There must be something in the air that triggers a change in iron. So I tried to put air in the molten iron, and it worked.

The rising gray-brown smoke was undoubtedly rust. ”

Zhang Shengde looked at Zhang Hao for a while before nodding: "Very good association ability." ”

"Dad, I'm very sensitive now. ”

Zhang Shengye smiled: "Maybe it's a blessing in disguise." The Qian family can be regarded as lifting a stone and shooting themselves in the foot this time!

Little mouse, what do you think should be done with the Qian family?"

"Second uncle, I think that the Qian family has obtained new technology, and it must be investing and transforming on a large scale, just to make a splash.

We also need to seize the time to transform and produce a large amount of dark iron.

When the Qian family is ready to make a blockbuster, we will be a companion. ”

"Companion, this is a good idea! I will send someone to keep an eye on the Qian family!" Zhang Shengde's face suddenly burst into murder. This period of time has been harmed by the Qian family, and this revenge must be doubled!

Zhang Hao said again: "Dad, second uncle, I still have an idea. ”

Zhang Shengye was curious: "Little mouse, what do you think?"

Zhang Hao opened his mouth and said, "Sell low-level and middle-grade magic weapons in large quantities and at low prices!...... I think it's better to use the word 'sell'. ”

"Tell me about it. Zhang Shengde said.

"Selling magic artifacts is obviously more profitable than selling Xuantie, and we have more room to reduce prices, so we can fight a price war and seize the market. ”

"Heh......" Zhang Shengde smiled, touched the top of Zhang Hao's head, and said seriously: "The idea is very good." But in a hurry. For the time being, you should sell it in large quantities. ”

"Why?" Zhang Hao asked.

"Because...... We also need to unite some 'friends' now and open up the situation.

You can't eat alone until you're strong enough!

Besides, we also lack the craftsmen needed to refine magic weapons and magic weapons!"

Zhang Hao understood: quietly enter the village, don't shoot~~~

In the end, Zhang Shengde made a decision: use good Xuantie to arm the family, and sell it to the outside world, up to 86%.

Bows, arrows, weapons, etc., need to be replaced and replenished in large quantities, and arrows and blades are covered with a layer of high-purity dark iron to increase armor-piercing ability.

Zhang Shengde is in charge of arming, Zhang Shengye is in charge of the mine, and Zhang Hao is ...... Temporary Cameo Engineer!

By the time dawn, the craftsmen could already directly refine 70% to 86% pure iron, which was saved in the later period.

At Zhang Hao's request, the iron ingots were poured into a foot and a half square (half a meter), and the pieces were built up like city bricks.

After making sure that the craftsmen had mastered the skills, Zhang Hao found the craftsman Huang Mingshan to understand the fan.

To be honest, when he saw the fan before, Zhang Hao was surprised and delighted.

What is the first element if you want to develop industry?

Motivation!

Artificial power!

Artificial power that is no longer constrained by nature, can free man's hands, can be controlled and recreated!

The industrial revolution in another world began not so much with the steam engine as with man-made power.

Huang Mingshan is very restrained, his face is fireworks, and he can only see his snow-white teeth when he smiles from time to time.

"Sit down, don't be inhibited. ”

"Yes, yes, yes. Huang Mingshan sat down carefully, only sat lightly on half of the chair, put his hands on his thighs, and bent his head slightly.

Zhang Hao smiled gently, took out ten lower grade spirit stones and put them on the table: "Huang Mingshan, I'll ask you a few questions about the fan." Answer well, these spirit stones are yours. ”

Huang Mingshan calmed down instantly, staring at the spirit stone with burning eyes. Ten lower-grade spirit stones are almost equivalent to Huang Mingshan's net income in the past six months. Now, they lie quietly in front of them, within reach.

Zhang Hao flipped out a note and asked one by one, and Huang Mingshan also answered one by one.

The fan is driven by spirit stones, and a one-inch inferior spirit stone can make the fan run continuously for half a day.

In everyone's perception, this price is a bit high--just blowing the wind, it costs 60 spirit stones a month! In general, bellows are sufficient.

As for the structure of the fan, it is very simple, there is only a low-level wind formation, there is no mechanical structure, only the formation rune structure.

However, this structure is very hot, and the formation pattern is made of low-grade dark iron, and the resistance value is very large, so the formation pattern is often fused.

And this kind of clumsy fan is not new, but it is not very useful in the world of cultivation, so it has not been developed.

"I still have a question, the formation made of low-grade dark iron is easy to burn, why not use a better black iron?"

Huang Mingshan blinked, but was a little confused: "It's just some stupid guys, how expensive is a good Xuantie." ”

"Does everyone do this?" Zhang Hao asked.

"Yes!" Huang Mingshan looked natural.

Zhang Hao smiled: "Very good." These ten spirit stones are yours. ”

"Thank you, young master. Huang Mingshan picked up the spirit stone, his face was full of joy, and he smirked at Zhang Hao at the end.

Zhang Hao nodded: "Huang Mingshan, I have a task and need your help." ”

"Young master, please say, as long as Huang Mingshan can do it, go to the soup and fight the fire, and die without spinning!" Huang Mingshan stood up excitedly.

"Okay!" Zhang Hao expressed his appreciation for Huang Mingshan's attitude, "It's nothing, you will make a table of the craftsmen, all the people you know, all the people who know the fan, the formation, and the refining tool, the more detailed the better."

If this thing is done, 10 spirit stones will be rewarded!"

"Yes!" Huang Mingshan's eyes lit up, and he vaguely felt that the opportunity to change his fate seemed to have come.