Cultivation Industry Era

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After listening to Zhang Hao's suggestion, the city owner was silent for a while, a faint smile appeared on his sorrowful face, like a ray of sunlight in the dark clouds, full of hope.

He patted Zhang Hao's shoulder hard, "I suddenly understood why General Wu is optimistic about you. Your suggestion, I immediately passed it to General Wu."

Of course, Zhang Hao should be humble: "It's just a little immature suggestion. If you want to implement it really, you need an experienced talent line like the city master."

"Haha..." The city master laughed, but he looked serious after a while: "Zhang Hao, there is a message to tell you."

"What?" Zhang Hao's heart raised.

"You are famous. Now everyone knows that after you heard about the princess, you vomited blood, and even more people said that after you vomited blood, you were unconscious."

Zhang Hao: ...

Until leaving the city's main palace, Zhang Hao's face was black. Who was so gossip, how could such a message spread all over the street? No wonder when the people just entered the city, the people along the way looked so strange to me.

The streets that are not shameful in the future are all ~~~

Zhang Hao returned to the guild with Zhu Yuantang. Zhu Yuantang will come to negotiate on behalf of the city's main palace. The results of the preliminary negotiations will be submitted to the imperial court case.

The Zhang family already had mature credit terms, and Zhu Yuantang himself participated in the discussion, and the new credit terms were quickly drafted. The main reason is to add tax mortgage clauses.

Before getting the emperor's reply, he could only draft it. Then Zhang Hao returned to the family in a hurry, and there are still too many things to do at home.

The situation is so critical that Zhang Hao must expand the Zhang family as soon as possible. To put it bluntly, as long as the Zhang family is strong enough, even if the country of Qixia is overthrown, the Zhang family can talk about conditions with the country of Taihua or the country of vicissitudes and continue to survive.

Since the time of the country, the place of Qixia has also undergone several changes. However, there are so few families and martial arts, but they are prosperous.

For example, the Ouyang family where the prime minister is located, no matter how the dynasty changes, the new country will always have their support.

This is the power of the family, a force very different from the country.

Even if the emperor hated the Ouyang family, the Jiuyangzong and so on, he still had a smile on his face.

In this world of spiritual practice, it is said to be ‘the homeland and the world’. There is a home first and then a country. This sequence is not wrong.

Zhou Jue hasn't left yet. When Zhang Hao came back, Zhang Shengde was discussing with Zhou Jue about spiritual practice. Compared to Zhou Jue, who has a lot of knowledge, Zhang Shengde has only asked for advice.

Zhou Jue is the young master of Xing Lin Tang himself, and is also the master disciple of Jiuyang Sect. The word ‘family source’ is not enough to describe. But Zhang Shengde was from Noluko.

Zhou Jue talks and laughs, but he is not secretive. In addition to the core of the sect and family, the rest is knowing everything.

Zhang Hao came to meet him and hurried back to the smelting base.

As for Zhou Jue's thoughts, Zhang Hao vaguely understood: saying something about his practice did nothing to Zhou Jue, but he was able to win the Zhang family.

Zhang Hao's identity as a disciple of Xuanzhenism is not trivial. What's more, the smelting ability of the Zhang family's black iron is enough for Zhou Jue to put on a smiley face.

And the Zhang family wants to really climb the high branch of Zhou Jue, the best way is to produce high-purity black iron.

Family-to-family exchanges have the best interests.

When Zhang Hao came to the humble laboratory, he was surprised to find that Huang Mingshan and others were already experimenting with quicklime water.

Seeing Zhang Hao, Huang Mingshan shouted excitedly: "Master, we found that the volume of the burned air was reduced by about a quarter after the injection of quicklime water."

In other words, is the oxygen content of air in this world about 25%?

Zhang Hao saw the experiment of Huang Mingshan and others, and the beakers were polished with translucent quartz stone. There is no glass for the time being, and Zhang Hao does not want to produce glass now.

When the Zhangs are truly stable, they can completely protect their wealth, and it is not too late to produce glass. Now it is enough to have quartz and other experiments. Anyway, there are magic instruments specially polished, and there are spells.

Under Zhang Hao's supervision, Huang Mingshan once again conducted an experiment.

The upper layer of the flask was directly closed with a small spell, and then a piece of hot charcoal was inserted. After waiting for a long time to confirm that there was no change in the charcoal, the flask was led to lime water.

I saw that the lime water rose a little bit, and finally occupied about a quarter of the volume.

The lime water also becomes cloudy.

This is a very simple experiment, but this simple experiment can open the door to chemistry.

Zhang Hao didn't speak, but picked up a quartz tube in the middle and blew it into the lime water, and saw that the lime water began to be cloudy.

"This..." Huang Mingshan and others were surprised.

Zhang Hao smiled: "I have been thinking, is there a reaction similar to burning in our body? Well, this question will be discussed later. What we have to do now is to obtain high purity black iron.

Let's do an in-depth test. What happens when a red hot iron bar is inserted into the flask? "

At the beginning of the test, there was obvious rust on the surface of the iron bar, and the seal of the bottle mouth began to sag.

Until the iron bars no longer change, put the flask in lime water.

This time the lime water instantly rose to a quarter position, and the lime water did not become turbid.

Huang Mingshan thought deeply: "There is a certain component in the air that can burn with charcoal or rust the iron. Combustion with charcoal produces a certain amount of gas that can make the lime water turbid. After reacting with iron , Solid rust was generated, and this part of the gas disappeared directly.

And we breathe, it seems that this part of the gas is needed. "

Zhang Hao nodded with a smile.

Huang Mingshan was encouraged and thought about: "Is this the aura between heaven and earth?"

"Poof..." Zhang Hao spewed out tea, which was a big turning point.

Huang Mingshan was a little embarrassed: "Master, isn't it Aura?"

Zhang Hao clutched his head, "If this is Reiki, then why do we need to add Lingshi powder when smelting black iron!"

"Oh oh..." Huang Mingshan also realized the mistake.

Chen Feng next to him suddenly said, "Is it the legendary life force?"

"Life force can make iron rusty?!" Zhang Hao rolled his eyes, but let everyone think patiently.

This is the process of breaking out of cocoons, and this process cannot be promoted by seedlings.

Liu Ming beside him jumped up: "I know, this is a burning element!"

Zhang Hao continued shaking his head: "If this is a burning element, what was the gas produced by the calcination of the carbon block before it burned with a light blue flame?"

Huang Mingshan scratched his head and suddenly asked Zhang Hao: "Master knows?"

Zhang Hao laughed, but the words were decisive: "I don't know!

But I know that your guess is wrong because there are other explanations.

There is only one truth, and the answer is unique.

You must find the only answer! "

(The text says that the red iron bar is rusty, not burning. But thanks to the careful readers.)

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