in the ward.

Zhao Hao was busy giving the humanoid material analyzer, oh no, Pan Zhongcheng applauded.

Yes, this cement is filled with a certain proportion of pyrite slag, which greatly increases its strength!

After three months of unremitting efforts by the exploration team, they finally found the location of the pyrite on Xishan Island.

But this is only the use of pyrite slag, Zhao Hao is looking for pyrite, and it is not used to make cement, or even for ironmaking.

Because the iron content of this product is less than half, with the current smelting level, it is impossible to get pig iron in good condition.

However, it contains more than half of the sulphur content, and can easily produce sulphur and sulphuric acid.

In fact, until 400 years later, no decent natural sulfur ore was found in China. Sulfur and sulfuric acid, which are needed for industrial production, have long been extracted from pyrite.

Pan Ji tamed a square, golden pyrite and couldn't help but praise it: "Beautiful, so beautiful, I can't bear to swallow it when I look at it." ”

"No wonder scammers pass it off as gold, it's so similar." Zhao Hao also nodded appreciatively. In the West, pyrite has long been regarded as a cheap ancient gemstone.

"That's because they're stupid, don't you know if you taste it?" Pan Zhongcheng bit down, clicked, and bit off a corner of the ore. "Crunch, it's a completely different thing from gold." ‘

"Hey......" Zhao Hao couldn't laugh or cry. Who has your teeth? ”

"It's crispy, it's like eating a popsicle, don't you believe you taste it?" Pan Zhongcheng handed Zhao Gongzi a piece.

Zhao Hao naturally thanked Bumin. Hurriedly pointed to the third ingredient and said:

"You can eat more of this, and it can cure your bloating."

"Huh?" Pan Zhongcheng looked at the small grid, where there were a few crystal-clear rock candy-like things.

Pan Zhongcheng twisted a piece, stretched out his tongue and licked it, smacking his lips and said: "It's salty and bitter, this is ...... nitrate."

As if he remembered something, he suddenly changed his face and said angrily: "Good boy, you dare to yin Lao Tzu!" ”

"Don't get me wrong, this is not a urine pile, but a natural manganese." Zhao Haoxin said that he was quite a picky eater. hurriedly explained, and then appeased the old man who wanted to eat people.

"Oh?" Pan Jitao couldn't help but be surprised: "There is still miscanthus on Xishan Island? ”

"It's not from Xishan Island, it's from Fengyang Mansion." Zhao Hao replied with a smile:

"It's a coincidence. Last month, Wu Kee found that someone was selling counterfeit white sugar and rock sugar, and after some investigation, it turned out that it was replaced by miscanthus salt. ”

"I arrested people in the county for a trial, and learned that they came from Fengyang Mansion, where there is a large amount of natural manganese. I asked Uncle Mi to investigate, and I brought these back, please Zhongcheng to show the product, is it necessary to make a move? ”

"It is necessary, bitter pure, salty people." Pan Jitao nodded without hesitation and said, "It's much purer than what comes out of urine...... Ahem, the old man is also guessing, I haven't tasted that before. ”

"Uh-oh." Zhao Hao nodded happily. There are too many impurities in the soil nitrate method, and with high-purity miscanthus nitrate, the power of gunpowder can be greatly improved.

He also said insincerely: "The ice made in this way can finally get rid of the smell." ”

"Exquisite!" Pan Jitao couldn't help but praise. He will also run five or six hundred miles to find better ingredients for a purer delicacy.

This is the attitude that a son of a family should have.

"This is the quartz sand brought back from Fengyang by the way, Zhongcheng estimates that he can't chew it, so he spit it out." Zhao Hao pointed to the last one again.

Fengyang is a good place, not only Nanzhili is also the only high-grade miscanthus mine in the whole south, but also the only quartz placer mine in Nanzhili.

The reason why the glaze factory in Beijing can't burn glass is because there is no high-grade quartz sand.

Pan Zhongcheng chewed for a long time without believing in evil, reluctantly spit out the quartz sand in his mouth, took the cup and rinsed his mouth and said, "Chicken ribs." ”

Having said that, he was still very satisfied with the first three things he ate, and it seemed that he had really recovered.

The two were discussing the difference between the taste of quartz sand and ordinary river sand, when they heard Gao Wu knocking on the door outside.

After being silent for a long time, Brother Gao reported: "The Zhongcheng family is here. ”

"Oh, come in." Zhao Hao stood up.

"Put these away first, let them see and talk about me." Pan Jitao stuffed a piece of mango salts into his mouth and hurriedly closed the lid.

Zhao Hao hurriedly stuffed the wooden box into the bedside table.

At this time, Gao Wu also opened, and an old man who looked about the same age as Pan Jitao walked in quickly with two young people.

"Father!" The two young men lay on the head of Lao Pan's bed and began to cry.

The old man also stumbled forward, holding Pan Jitao's hand and wiping away tears.

"Big brother, why are you crying, am I not good?" Pan Jitao comforted the old man, glared at the two descendants and said, "What are you two mourning?" Lao Tzu is not dead yet, stand up. ”

The two young men were really obedient, and quickly stood up obediently, sobbing and not daring to cry.

Pan Jitao introduced three people to Zhao Hao, the old man was his second brother, Jiajing's 20-year jinshi Pan Zhongqi, and the two young people were his eldest son Pan Dafu and second son Pan Longhan.

After the two sides met, Zhao Hao apologized to the three of them, saying that he did not take good care of Pan Zhongcheng and made Zhongcheng suffer. And sincerely invite the three of them to live in Kunshan for a longer time, so that he can do his best to be a landlord.

"Don't be polite, they all know that this is an old problem." Pan Jitao waved his hand, so that Zhao Hao didn't have to blame himself.

"Yes, Zhao Gongzi. My fourth brother's temper is unbearable for ordinary people, and we are so grateful that you can bear him for so long. Pan Zhongli also comforted Zhao Hao and said: "It just so happens that the two miracle doctors are here, and they will definitely be able to cure his illness." ”

Zhao Hao exchanged a few more words with them, then got up and said goodbye with interest, and let the family talk.

But he was stopped by Pan Jitao and said, "Do you think my two sons are still considered successful?" ”

"Hehe......" Zhao Haoxin said, I just saw you for the first time, who do I ask if you ask me?

But he didn't have a mouth to boast: "Zhongcheng is a scholarly family and a strict family, and the two sons are also dragons and phoenixes among people at first glance, and they will have great achievements in the future." ”

"Since you are so optimistic about them, let them stay in Kunshan as well." Pan Ji tamed the pole and said, "Isn't your Yufeng Academy about to start?" Anyway, there aren't many more than two, so I'll accept these two students again. ”

"Uh......" Pan Zhongli opened his mouth when he heard this, but he stopped talking. He was born in Shujishi, but he hated the strict party back then, so he had to resign early and return to his hometown, and devoted all his heart and soul to teaching his children and nephews.

The Pan family was able to give birth, and the four brothers gave birth to nineteen sons, among which the most successful were Pan Jitao's two sons.

Now seeing that the fourth brother doesn't discuss with himself, he is about to pinch the tip at once, Pan Zhongli is naturally a little difficult to accept.

But his son belongs to someone else, and he can only watch Pan Dafu and Pan Longhan kowtow to Zhao Hao and apprentice, and he feels his heart broken.

Pan Jitao saw the loss of his second brother, and took advantage of the time when the two sons sent Zhao Hao out, and whispered to Pan Zhongqi:

"Second brother, the kid surnamed Zhao is a god man. The children can learn a lot more by following him than by following us. ”

"Oh, really?" Pan Zhongli looked at his younger brother in surprise. I don't know how the boy who didn't have any hair conquered him.

"Really. Not only these two children, but the next generation of my Pan family will go to Yufeng Academy for further study. I gave him Kunshan as a cow and a horse, so I can't give him this convenience, right? ”

Pan Jitao blew his beard and glared for a while, and said a little embarrassed after speaking: "Although our family does have a little more ......."

ps. The second update, ask for a monthly pass!