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Chapter 68 I don¡¯t know

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    After listening to Zhang Hao's suggestion, the city lord was silent for a while, and a faint smile appeared on his sad face, like a ray of sunshine shining through the dark clouds, full of hope.

    He patted Zhang Hao's shoulder hard, "I suddenly understand why General Wu is optimistic about you. I will pass your suggestion to General Wu immediately."

    Zhang Hao of course had to be modest: "It's just an immature suggestion. To truly implement it, we need experienced people like the city lord."

    "Haha" The city lord laughed, but his face turned serious again after a moment: "Zhang Hao, I have some news to tell you."

    "What?" Zhang Hao's heart lifted.

    "You are famous. Now everyone knows that you vomited blood after hearing about the princess. Some people even said that you fell into a coma after vomiting blood."

    Zhang Hao:

    Until he left the City Lord's Mansion, Zhang Hao's face was dark. Who the hell is so gossipy? How come this kind of information spreads all over the streets?  No wonder when I first entered the city, the people along the way looked at me so strangely.

    From now on, this kind of thing will no longer be shameful and will be everywhere in the streets~~~

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

    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 thing is to increase the terms of tax mortgage.

    Before getting the emperor¡¯s reply, we can only draft it.  Then Zhang Hao hurriedly returned to his family. There were still too many things to be busy with at home.

    The situation is so critical, Zhang Hao must strengthen the Zhang family as soon as possible.  To put it bluntly, as long as the Zhang family is strong enough, even if the Qixia Kingdom is destroyed, the Zhang family can negotiate terms with the Taihua Kingdom or the Canglan Kingdom and continue to survive.

    Since the age of the country, the country of Qixia has also experienced several changes.  But there are a few families and sects that remain prosperous.

    For example, the Ouyang family where the Prime Minister belongs, no matter how the dynasty changes, the new country cannot do without their support.

    This is the power of the family, a power completely different from that of the country.

    Even if the emperor hates the Ouyang family, Jiuyang Sect and other existences, he still has to smile.

    In this world of spiritual practice, it is said that ¡®family, country, and world¡¯ means family first, then country. This order is not wrong.

    Zhou Jue hadn¡¯t left yet. When Zhang Hao came back, Zhang Shengde was discussing cultivation issues with Zhou Jue.  Compared to the knowledgeable Zhou Jue, Zhang Shengde could only ask for advice.

    Zhou Jue is the young master of Xinglin Hall and the chief disciple of Jiuyang Sect. The words "family origins" are no longer enough to describe him.  But Zhang Shengde was born in Yeluzi.

    Zhou Jue talked and laughed happily, but he kept nothing secret. Except for the core of the sect and family, he actually knew everything and talked about it.

    Zhang Hao came over to pay a visit and hurried back to the smelting base.

    Zhang Hao had a vague understanding of Zhou Jue's thoughts: Talking about spiritual practice would not hurt Zhou Jue, but it could win over the Zhang family.

    Zhang Hao¡¯s status as a registered disciple of the Xuanzhen Sect is no small matter.  What's more, the Zhang family's black iron smelting ability is enough to put a smile on Zhou Jue's face.

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

    When communicating between families, interests come first.

    When Zhang Hao came to the simple research room, he was surprised to find that Huang Mingshan and others were already testing quicklime water.

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

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

    Zhang Hao looked at the experiments conducted by Huang Mingshan and others. The beakers were polished with translucent quartz stone.  Glass is not available for the time being, and Zhang Hao does not want to produce glass now.

    When the Zhang family is truly stable and can fully protect its wealth, it will not be too late to start producing glass again.  Now it is enough to do experiments with quartz and so on.  Anyway, there are specially polished magical instruments and spells, so it is not troublesome to polish these instruments.

    Under Zhang Hao¡¯s supervision, Huang Mingshan conducted another experiment.

    The upper layer of the flask is directly sealed with a small spell, then a piece of hot charcoal is inserted, and after waiting for a long time to confirm that the charcoal has not changed, the flask is placed on the stone.??In the water.

    You can see that the limewater rises little by little, and finally occupies about a quarter of the volume.

    And the lime water also becomes turbid.

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

    Zhang Hao didn't say anything, but picked up a quartz tube with a central tube and blew it into the lime water. He saw that the lime water also started to become turbid.

    "This" Huang Mingshan and others were surprised.

    Zhang Hao smiled: "I have been wondering whether there are reactions similar to combustion in our bodies? Well, we will discuss this issue later. What we need to do now is to obtain high-purity black iron.

    Let¡¯s do an in-depth experiment. What will happen if a red-hot iron bar is inserted into a flask?  "

    At the beginning of the test, obvious rust appeared on the surface of the iron bar, and the seal on the bottle mouth began to dent.

    Until the iron rod stops changing, place the flask upside down in lime water.

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

    Huang Mingshan thoughtfully said: "There is a certain component in the air that can burn with charcoal and can also make iron rust. Burning with charcoal produces a certain amount of gas that can make lime water turbid. After reacting with iron  , solid rust is formed, and this part of the gas disappears directly.

    And when we breathe, it seems that we need this part of the gas.  "

    Zhang Hao nodded with a smile.

    Huang Mingshan was encouraged and thought thoughtfully: "Could this be the spiritual energy between heaven and earth?"

    "Pfft" Zhang Hao spurted out a mouthful of tea. This was such a big turn.

    Huang Mingshan felt a little embarrassed: "Master, isn't it spiritual energy?"

    Zhang Hao covered his head, "If this is spiritual energy, then why do we need to add spiritual stone powder when we smelt black iron!"

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

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

    "The power of life can make iron rust?!" Zhang Hao rolled his eyes, but patiently let everyone think.

    This is the process of breaking out of the cocoon, and this process cannot be encouraged.

    Liu Ming, who was next to him, jumped up: "I know, this is combustion element!"

    Zhang Hao continued to shake his head: "If this is combustion element, then what is the gas with light blue flame that we produced by calcining the charcoal before?"

    Huang Mingshan scratched his head and suddenly asked Zhang Hao: "Master, do you know?"

    Zhang Hao chuckled, but his words were decisive: "I don't know!

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

    There is only one truth and only one answer.

    You must find the only answer!  "

    (The article says that the red-hot iron bars rust, not burn. But thanks to the attentive readers.) (Remember the website address: www.hlnovel.com
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