In the raw material processing room of the workshop, Wang Boyang, the son of Danyang, carefully observed the sulfur ore that was crushed by the stone mill, pinched a pinch of powder with his hand and twisted it lightly on his fingers, frowned and said: "Yiming, these sulfur ores are not refined enough, and they can't prepare the gunpowder that Su Jushi wants with it, so you can arrange a few more people to grind it with a stone mill a few more times." ”

Zhang Yiming also followed the example of his master Danyangzi, pinched a pinch of powder with his hand and rubbed it on his fingers, obviously feeling that it was very rough, and it was indeed far from the powder that Su Gongzi said.

He nodded, "Yes, Master. The apprentice guarantees that the raw materials must be handled well this time, and the black powder that Su Gongzi said must be prepared, otherwise I am sorry for Su Gongzi's good hospitality in the past few days. ”

Wang Boyang stretched out his hand and knocked a chestnut on his head, "Do you think about anything else all day except knowing how to eat?" The book "Fundamentals of Chemistry" that Master taught you yesterday, do you have any good students to study? ”

Zhang Yiming let out an "oops" and hurriedly replied: "Master, don't worry, the apprentice has already copied a copy with several other junior disciples, and I promise that I will not disappoint you." But do you think everything in that book is true? There are a lot of symbols on it that the disciples can't understand at all. ”

Wang Boyang glared at him with a straight face, "That book was given by Lord Shenlong, how can it be fake." I didn't see that you Uncle Tian was already in his hands, studying hard, and even forgot to eat. ”

Speaking of this, he couldn't help but shake his head, he didn't expect that his best friend was really obsessed with chemistry.

"Yiming, don't be too anxious, Su Jushi said that when it was evening, he would start a class in the school hall of Bailu Academy, specifically explaining the meaning of the symbols on the "Encyclopedia of Basic Knowledge of Chemistry". When the time comes, you and a few other juniors and disciples must be present and listen carefully, you know? ”

Zhang Yiming's face was overjoyed when he heard this, and he hurriedly asked, "Master, is this true?" Great, I'm worried that I can't understand a lot of things, so I must ask Su Gongzi for advice when the time comes. ”

Wang Boyang nodded, "Naturally, it's true, has the teacher deceived you?" Okay, don't think so far ahead, first crush the current batch of sulfur ore a dozen times, and there must be no leakage. ”

As he spoke, he sighed again, "Only by doing the things we do well can Su Jushi teach us more about chemistry." Otherwise, you won't have enough to eat, you won't be able to chew too much, and no matter how much you learn, it's useless. ”

Zhang Yiming and a few other little Taoist priests bowed down and said solemnly: "What the master instructed is that the disciples keep it in mind. ”

After speaking, Zhang Yiming personally operated the stone grinder, carefully grinding and crushing the sulfur ore over and over again, until he didn't feel rough when rubbing it with his hands, and then he gave up.

Zhang Yiming was dealing with sulfur ore here, and several other people were dealing with other raw materials on the side. Although this time it is purely handmade, because of the careful processing, it has been milled dozens of times, and all the processed raw materials have become powder, which is not the same as the last handmade one.

Wang Boyang personally mixed the corresponding amount of nitrate, sulfur and charcoal together according to the black powder formula provided by Su Ziheng, in order to stir more evenly and thoroughly, he did not choose to directly make ten catties of gunpowder this time, but chose one catty.

He found a large urn, poured a pound of mixed gunpowder powder into the urn, then covered the mouth of the urn, and shook it upside down, left and right, so that they were mixed more thoroughly.

After stopping, Danyangzi Wang Boyang remembered what Su Ziheng had said to him, if you want to make the gunpowder burn more powerful and easier to preserve from moisture, the best way is to make it into granules.

Even Su Ziheng briefly explained to him how to granulate the powder, but this method was also from the book, and it was not verified by practice, and Su Ziheng himself didn't know whether it was feasible. And all this needs to be tested by Wang Boyang himself.

According to Professor Su Ziheng's method, Wang Boyang found three taels of good soju, poured it into the urn to make mud, and then put it into the trough, continued to grind dozens of times, and mixed it into grains after leaving the trough, such as the size of yellow rice, and it must be put into the palm of the hand without feeling the heat.

After making granulated black powder, Wang Boyang immediately took it to find Su Ziheng, who was preparing for class and writing materials in the study at this moment.

After hearing that Danyangzi had granulated the black powder, he seemed very excited, hurriedly put down the brush in his hand, found Shi Meng, and continued to test the power of granulated black powder.

Still by the river, a ceramic grenade made of granulated black powder was used to try to fry a goat.

The ignorant goat was tied to a tree with a rope, and he still did not feel the danger coming, and kept bowing his head to nibble on the grass that had gradually withered and yellowed on the ground.

Shi Meng placed the grenade under the goat, lit the fuse, and fled quickly. He'd heard the old man say that this time the grenade would be more powerful than the last time.

The grenade last time was terrifying enough, but won't it kill people this time? Rao is Shi Meng's unrivaled horizontal kung fu, and he doesn't want to try the consequences of being blown up by a grenade.

"Boom!"

With an earth-shattering bang, the goat screamed and flew into the sky, and even the rope that held it was broken by a grenade. Then, in the midst of everyone's stunned eyes, they saw the severed limbs and blood of the blown goat scattered all over the ground, and they saw that they could not live.

Zhang Yiming's mouth opened wide, and he couldn't believe what he saw in front of him, "Okay, it's terrifying." ”

Su Ziheng's eyes showed a look of surprise, "This is the carefully crafted granular black powder, and its power has increased by one-third compared to the previous one. It used to be able to seriously injure a goat, but now it can be killed directly. This...... That's the gunpowder I need. ”

Wang Boyang's eyes showed an unbearable look, he didn't expect that the black powder would be so powerful after it was carefully ground and granulated. He turned his head and said worriedly, "Su Jushi, won't this hurt Tianhe too much?" ”

Su Ziheng was stunned for a moment, then shook his head and said, "Daoist Wang, you can think like this, which proves that you have a compassionate heart." It's just that gunpowder is just a tool after all, and what kind of consequences it can cause depends entirely on how the person who uses it uses it? ”

"If it is used to kill people, it is indeed harmful. But if you use it to blow up mountains and open the way, you should know how much time and physical strength it can save from hard labor. ”

Wang Boyang was stunned, and sighed lightly for a long time, "That's true, it's too one-sided." It's just that this is a big killer, and it can't be easily leaked out, otherwise there will be endless troubles. ”

Su Ziheng said with a smile: "If the Taoist can think like this, Su will be relieved." Why did Su insist on inviting the Taoist to test gunpowder, just because he didn't want its formula to spread. Su believed that the Taoist would be able to keep this secret. ”

Wang Boyang said solemnly: "Please rest assured that Poor Dao will definitely not let it leak anything, and Poor Dao will take good care of his apprentices and keep his tongue tight." ”