Hao Qing's workshop has various raw materials all year round, among which soda ash and limestone are worthless things, so Hao Qing happily brought them to Su Hao. But when he was taking the quartz stone, Hao Qing obviously showed some distress, which made Su Hao very disdainful.

"Brother Hao, it's just a few stones. Are you so uncomfortable?" Su Hao asked.

Hao Qing said with a bitter face: "Master Su doesn't know that this kind of glass stone is not produced locally. My father bought it from Nanjing for a large price. He is planning to use it when someone refining glass. Now that I have used it, I have to find a way to make up for it."

Su Hao took the stones and looked around, without seeing any difference between them and ordinary quartz stones. He asked Hao Qing: "Who did you hear that we don't produce such stones locally? This is the most common stone on the mountain. If you want, I can help you find them at any time."

"Be serious about this?" Hao Qing stared at Su Hao and asked.

"Don't say it's true or not. If you help me get a carriage, I can take your third brother to the mountains and bring you a cart." Su Hao said.

Quartz minerals are extremely common on the surface. So far, there are 10 types that we have discovered, including low-temperature quartz, high-temperature quartz, scale quartz, crescent quartz, squartz, etc. They have different appearances, but the main components are the same, nothing more than silica. Su Hao once inspected the mountainous areas in the south of Fengcheng and conducted a rough study on the mineralization conditions in that area. He believed that if you run a little, you will definitely be able to find one or two good quartz mines. The reserves may be insufficient compared to later industrial production, but it is more than enough to cope with the needs of Hao Qing's handicraft workshops.

"I don't need a car. Can you find me 100, or 500 kilograms, then I'll give the glass pieces you want in vain." Hao Qing said.

Su Hao said: "A word is determined, you are really worried. We will make a note later. I will give you 1,000 kilograms of glass stone. If you can't do it, you will be compensated 100 taels of silver."

After hearing Su Hao's words so sure, Hao Qing believed it a little, so he smashed the precious glass stones into small particles and put them into the crucible. Hao Qing didn't know what the feldspar needed in the recipe Su Hao said was, but by chance, Su Hao turned around and found that there was a stone for footing in the corner of the yard, which was the feldspar he was looking for. So he called Hao Tong and asked him to smash a piece with a hammer, crush it, and threw it into the crucible.

After the raw materials were ready, Hao Qing put the crucible on the stove and began to ignite and smel. He is worthy of being a craftsman's house, and he usually prepares the best coke. The simple-minded and well-developed little Wuzi pulled the bellows hard, and the flames were beating. The crowds surrounded by the stove immediately felt the heat waves coming.

"Master Su, you said that Fengcheng County cannot find good coke, why does my elder brother have it here?" Hao Tong still remembered the words Su Hao fooled him.

Su Hao also knew that he was fooling around before, but now he still had to continue to speak stubbornly. He said, "Your elder brother is a craftsman, and of course he usually has some coke. Who knows where he got it?"

"Can we borrow his coke and refine the good pig iron you mentioned?" Hao Tong suggested in a low voice.

Su Hao looked at Hao Qing who was servicing the crucible and was really planning to make glass. To make raw materials such as quartz sand to about 1,600 degrees Celsius, the temperature was slightly increased to be used for steelmaking. It seems that the Ming Dynasty's craftsman had mastered the technology of using refractory materials to make high-temperature crucibles. If they gave some advice, they might be able to make some alloy steel from later generations.

Thinking of this, Su Hao walked up and asked Hao Qing: "Brother Hao, do you have a larger crucible than this? If I want to use a crucible to make steel, you might do it?"

Hao Qing said: "I heard from my father about the method of steelmaking in crucibles. However, the steel made from this crucible is no different from steel stir-fried, and it costs more. Therefore, the method of steelmaking in this way has been used now."

Su Hao said: "The key to the crucible steelmaking lies in the formula. If the formula is appropriate, the 100-steel steelmaking lies in the face of crucible steel, which we usually say is nothing."

Hao Qing asked, "Does the master know this formula?"

Su Hao smiled and said, "There are more than a hundred kinds of recipes for crucible steelmaking, and I know only a limited amount of what I know. If we have the opportunity, we will try it slowly and we will always find the best recipe."

"Master, would you like to grant Xiaoli this steelmaking formula?" Hao Qing asked.

Su Hao said: "This recipe is not worth a lot of money. The difficulty is the ingredients in the recipe. I can't get it all together for a while. If you are willing to cooperate with me, after I find the ingredients, let's try it together."

"Xiao Ren is willing to serve his master." Hao Qing replied.

In fact, Su Hao did not know any steelmaking formula. What he could know was that there were various alloy steels in later generations, all of which were made of adding various elements to the steel. He was responsible for the mineral search and was very familiar with which elements could be used to smelter alloy steel, but he didn't know which element should be added in detail. Gu Zhi also knew some methods of smelting alloy steel, but Bi Jing was not as theoretical as Su Hao. In addition, only Su Hao could recognize the minerals needed to smelter alloy steel.

While speaking, the raw materials in the crucible had begun to melt. Hao Qing carefully observed the state of the glass liquid. When he felt that the various ingredients in the liquid had been completely mixed and there were no bubbles in the liquid, he clamped the crucible with tongs and poured the glass liquid into the mold prepared in advance, and then waited for the glass liquid to condense.

"Is this successful?" Seeing the transparent glass pieces poured out of the mold, Hao Qing couldn't believe it was true. He tried to pick up a piece of glass and knock it, and then broke it with his hands. He couldn't help but say ecstaticly: "It's done, Master, this glass has really been done!"

After saying this, before Su Hao could answer anything, Hao Qing flew to the side room with the glass in his hand. After a while, a gray-haired and vigorous old man took the glass in his hand and walked out of the room with Hao Qing's companion and slowly came to Su Hao and waited in front of him.

"This is my uncle, and his name is Yizong." Hao Tong whispered to Su Hao.

It turned out that the old man named Hao Yizong had been hiding in the wing room and observing the movement outside. When Su Hao proposed to burn the glass, he did not come forward, but just asked his son Hao Qing to deal with Su Hao. Now, according to Su Hao's recipe, the glass was really burned out. Seeing the glass sample sent by Hao Qing, Hao Yizong finally couldn't sit still.

"Hello Uncle Hao, my younger brother Su Hao is polite here." Su Hao took a step forward and politely said to Hao Yizong.

Hao Yizong hurriedly replied, "How dare you? Master Su is here, but the old man has not come far away to welcome him. I also ask Master to forgive me."

Hao Qing also quickly smoothed out the situation and said, "My father was inconvenient in his legs and feet, so he failed to come out to greet Master Su just now. Please forgive me."

"Where is it, I don't know that my uncle is at home, otherwise I have to pay my respects first, and I also ask my uncle to forgive me for my ignorance." Su Hao also said, "I'm welcome to say anything worth a lot."

Su Hao knew in his heart that Mr. Hao had been hiding in the wing room before and did not come out, obviously he didn't want to deal with him. The so-called inconvenience of legs and feet was just an excuse. Now he saw that he actually knew the formula of glass, and it was obvious that this formula was more clever than the old man's formula, so the old man showed up. To be honest, this was not because of his reputation as a worker master, but the power of knowledge.

"Master Su, I just heard from the dog son that the master refined glass without using saltpeter and sheep horns as a guide. Can you explain the reason to me?" Hao Yizong asked Su Hao.

"What is sheep horn?" Su Hao asked back. Previously, Hao Qing only admitted that he should use saltpeter when burning glass, but did not mention this sheep horn. Now Mr. Hao opened his mouth and bleeded the bottom. Obviously, he felt that the formula they kept was worthless, so it didn't matter that Su Hao knew. But, what does this sheep horn mean? Is it the common name of a mineral?

"The horns of sheep... are the horns of sheep." Hao Qing explained slowly. He couldn't understand why there were still people in this world who didn't know what the horns were. Has this scholar never seen a sheep?

"You mean, that kind of living sheep...the horns on the head?" Su Hao asked in surprise, and at the same time gestured with his hands on his head, imitating the appearance of Pleasant Goat.

"That's right." Hao Qing slapped her words.

"I sell cakes..." Su Hao sighed at the end. It turned out that sheep horns were really used as raw materials for burning glass. Which formula was invented by Niuji! The main ingredient of sheep horns is calcium oxide. Guru obviously used sheep horns as the source of calcium in glass. To penetrate calcium into the glass, throwing two pieces of limestone is enough. Why use such a weird material? Burning a piece of glass requires several pairs of sheep horns. No wonder the yield of this glass cannot be increased.

"Uncle Hao, this sheep horn... is actually not useful. The use of sheep horn is the same as the limestone used by my nephew. As for saltpeter, its use is the same as alkaline earth, which is much cheaper than saltpeter and is easier to find." Su Hao explained simply.

"So that's it, so that's it..." Hao Yizong murmured to himself. He repeatedly looked at the glass in his hand. After a while, he asked hesitantly: "Master Su, can you pass on the formula of making glass to me?"

"Uncle, hasn't Master Su already told all the recipes just now? And my elder brother has made them by himself. What else do you want him to pass on?" Hao Tong said carelessly.

"Tong'er is very careful!" Hao Yizong shouted, "The recipe of Master Su is priceless. Master Su just trusts us and has not concealed it from us just now. It is rare for me to see the magic of this recipe. How can I take this recipe for myself without Master Su's permission? We have the skills to do so, and I will be punished for a young age."
Chapter completed!