Early the next morning, the little Taoist priest Zhang Yiming took his two junior disciples down the mountain.

said to be a junior brother, but in fact, Danyangzi adopted two Taoist children since childhood, two years younger than Zhang Yiming, one is called Qingfeng and the other is called Mingyue. Because since childhood, with the alchemy of Danyang Ziwang Boyang, he is quite familiar with the process of making fireworks, and this time Zhang Yiming let the two of them do it.

In addition to the three little Taoists, Su Ziheng transferred five people from the White Deer Academy and the workshop, two large and three small plus three Taoist priests and himself, a total of nine people began to make black powder.

The production of black powder is not complicated, and the main raw materials are nitrate, sulfur and carbon. Nitrate and sulfur were bought in Xining City last time, and there were also a lot of inventory items in the warehouse that Zhao Wan'er gave him, adding up to more than 30,000 catties.

Charcoal Su Ziheng also began to arrange people to burn, and the burns were all good charcoal. Jiufu Mountain lacks everything, that is, there is no shortage of wood. In previous years, there were also many villagers in Dalei Village who would burn charcoal to sell in autumn and winter, and Su Ziheng directly asked them to buy it this time.

The theoretical best standard ratio of black powder is nitrate, sulfur, and charcoal accurate to two decimal places, of course, it cannot be so accurate in actual production, Su Ziheng intends to make it according to the formula of gunpowder for guns, and it is also for the future development of flintlock pistols for ease of use.

Because the three little Taoist priests had just come and were not familiar with the new weights and measures standards of Su Mansion before, Su Ziheng asked the three boys from Bailu Academy to teach them one-on-one.

Qi Xing'an and Guo Yuanming, two craftsmen transferred from the workshop, went with them to carry tools first, and the most important thing was to grind raw materials, such as stone grinding and stone grinding.

Before the invention of the steam engine, many machines and equipment could not be made, and could only be made by hand.

The first time he was purely experimental, Su Ziheng didn't plan to make too many at once. A total of 10 catties of raw materials were taken, including 7.5 catties of nitrate, 1 catty of sulfur, and 1.5 catties of charcoal.

He uses a rod scale in the standard scale, so the raw materials can be accurate to two, and the formula will have too much error, resulting in an unsatisfactory effect of gunpowder.

When using the rod scale just now, Zhang Yiming and Qingfeng Mingyue and a few little Taoist priests also watched very carefully and studied very seriously. Su Ziheng also arranged for Li Pengcheng, Jia Yuguang, and Chen Wenjie of Bailu Academy to record it carefully.

The most important thing that Su Ziheng explained to the three of them was that before each experiment, all the data should be accurately recorded in the book, and there should be no omissions.

Finally, compare the results of the experiment to see how the black powder made is the most powerful.

Because the formula has been determined, the time to ponder the formula is saved, and the most important thing to verify is the configuration method and the method of processing the raw materials, as well as how to granulate the finished black powder.

According to the normal method of processing is the gunpowder powder, often will agglomerate, into a hard lump, coupled with the impurity of the nitrate itself, exposed to the air is easy to absorb moisture, resulting in the production of gunpowder can not be fully burned, resulting in the gunpowder explosion power is insufficient.

Limited by time and his own tools, Su Ziheng did not plan to create the most ideal granular black powder from the beginning. Just like the production of cement, Su Ziheng first taught them how to produce, and finally how to optimize and improve, relying on them to study.

Su Ziheng himself only needs to check them and make sure that the products produced are up to standard. Otherwise, all the new things developed by him would have to be the most perfect and standard to make, and he would not be able to spare so much time to do them.

What's more, Su Ziheng thought deeper, if any invention and creation he took out was the final version, it would only stifle the creativity and research ability of the craftsmen, which was not conducive to the development of science in this world.

He just wants to be a key to open the door to science for the people of this world, and as for what can be found in the door, it is up to them to try to find out.

……

……

After two days of experiments, Su Ziheng looked at the black powder made in front of him and looked not very satisfied.

It has not been granulated, and the gunpowder looks like it is very coarse and varies in size. At first glance, it is not the mixed particles, but the raw materials that have not been processed well at the beginning.

Su Ziheng sighed, "I don't know how powerful the gunpowder is like this?" You'll have to experiment to find out. ”

Thinking of this, he instructed Li Pengcheng: "You go to Zhuangzi and ask the housekeeper or the eldest lady to ask for two porcelain pots or clay pots." Remember, you should be very thin, not thick, and it doesn't need to be too big, just a little bigger than a teacup. If there is no one in the Zhuangzi, or if there are not many of them, ask the housekeeper to go to the city to buy them quickly. ”

"Yes, teacher, students know." Li Pengcheng hurriedly ran out.

All the students who entered the White Deer Academy to study, Su Ziheng asked them to change their names to their teachers, instead of the previous master's titles.

Heaven and Earth Monarch Teacher!

In this era, the relationship between the teacher and the teacher is much closer than that between the master and the servant. The teacher-student relationship is inherently intimate, while the master-servant relationship is the opposite.

White Deer Academy is very important in Su Ziheng's mind. Once all kinds of talents are cultivated from the White Deer Academy, even if he does not continue the imperial examination in the future and stops as a talent for life, no one dares to provoke him easily.

The so-called peach and plum are all over the world, as long as the net of Bailu Academy is weaved, why should Su Ziheng worry about no fame?

Soon, Li Pengcheng rode back and forth, bringing back a bag of more than a dozen porcelain jars. Compared to clay pots, porcelain pots are much thinner.

Before the flintlock pistol was invented, Su Ziheng planned to make a simple grenade using the soil method first. If you use it well, the power of the grenade is also huge.

Because the bottleneck of the rubber sleeve has not been invented for the time being, Su Ziheng will not be able to make a four-way grenade like Japan in World War II in his previous life. It can only be used as a large firecracker.

Fortunately, he only planned to use this kind of ceramic grenade for defense, and he didn't have to worry too much about all kinds of other drawbacks. Moreover, the weight of the ceramic is also large enough, and when the time comes, it can be thrown from the wall more than two feet high, and it can also be thrown dozens of meters away.

It is good to use it against cavalry, even if you can't directly kill those cavalry, you can make the war horses frightened and unable to organize an effective attack. Once Meng Yuan's army realizes that the Su family manor is not easy to attack, they should not fight for a small manor with little oil and water.

In the final analysis, Su Ziheng just wanted to hold the manor from the enemy country and ensure that the people on his manor were not persecuted. As for how to repel the army of the Mengyuan Empire, that is a matter for the Great Xia army, and it has nothing to do with itself.