Yang Yifei shook his head with a smile, ignored the two guys who scolded each other every day, spread a large sheet of waterproof oiled paper on the side, and then began to use a small bamboo tube to scoop the materials piled up in three piles into the weighing plate and weigh them out in proportion.

This small scale can only weigh one pound at most, usually used in pharmacies, the Qing Dynasty one pound sixteen taels, but one tael is only 37.3 grams, not 50 grams in later generations, so a pound is about 596.8 grams.

Yang Yifei weighed it according to the ratio of seven taels of saltpeter, one tael of sulfur, and one or two halves of charcoal, and then directly poured the materials together and mixed them evenly, so that ten taels of black powder were obtained.

After the black powder was prepared, Yang Yifei poured it into the large dry bamboo tube they had prepared, which had already dried out and did not have the slightest moisture.

Yang Yifei was very patient and mixed all the materials little by little, and in the end, according to his calculations, he mixed a total of more than 830 taels of black powder, about 50 catties, and packed more than a dozen bamboo tubes.

After mixing the gunpowder, most of the day had passed, and the sun had passed overhead, Yang Yifei beckoned the two to eat some dry food, and then continued to move.

Take a thick stack of tin foil from the cloth bag you are carrying and cut it into squares of equal size.

In this era, tin foil was mainly used to make money to worship ghosts and gods, but in fact, this thing is very versatile.

This thing is said to be paper, but it is actually a tin aluminum alloy, which has the characteristics of sealing and deformable, and can be used in many places.

At this time, Yang Yifei regarded it as the outer packaging of the thunderbolt, Yang Yifei secretly thought, the charge of the grenade is about 50 grams, and the thunderbolt he made with about two taels of black powder can almost achieve this effect.

Thinking of this, Yang Yifei nodded secretly, weighed two taels of gunpowder, remembered the amount of gunpowder in this pile, and then poured it into a piece of tin foil.

Then bend the edge of the foil to form a groove, hold it in the palm of your hand, gently tamp it with a wooden stick wrapped around the cloth head, and finally press the edge of the foil down and stick it firmly, and a thunderbolt the size of a goose egg is made.

But what the effect is, you have to do an experiment to know first.

This thunderbolt, from mixing black powder to making it, was done by him alone, while Mao Shibai and Wei Xiaobao were sitting a few feet away chatting and resting.

Although Yang Yifei doesn't care about the production method of this thunderbolt, there are some things that are too easy for others to learn, and they can't show their preciousness.

To put it bluntly, Yang Yifei can rely on this hand to raise his value, and no matter how he deals with any force or anyone in the future, he can become a guest of honor with thunderbolts and other thermal weapons that he can make.

Of course, this must also be operated well, otherwise the guests at the table will have no part in him, and like Tang Ruowang Nan Huairen, it is very likely that he will become a prisoner.

After Yang Yifei made three thunderbolts, he stood up and walked towards Mao Eighteen and the two, and greeted: "Brother Mao, Xiaobao, the finished thunderbolt bomb has been made, come and try it." ”

When the two of them heard this, they got up and greeted Yang Yifei with great interest.

Looking at the ball with silver light in Yang Yifei's hand, Mao Shibai said curiously: "This is a thunderbolt?" Why is it so big? If you carry it, you can't bring a few, right? ”

Yang Yifei explained with a smile: "Normal thunderbolts are used to deal with a small number or a single enemy, so naturally they can't be used so big, almost the size of an egg. ”

"But we're going to rob prisoners, and the number of escort teams will definitely not be small, so I'll make it bigger, and this is just a test for testing, and there are some things I haven't added!"

"If you put some pieces of broken iron or iron sand or even stones in this thunderbolt, within a radius of three zhang, there will definitely be no chickens and dogs left, and now, you can only kill people within one zhang."

Mao Shibai suddenly realized, nodded slowly, Wei Xiaobao said impatiently: "Hurry up, Brother Yang, let us see the power of this thunderbolt first!" ”

Whether he can save Shuang'er or not depends on whether the so-called thunderbolt is powerful enough, so he is naturally very concerned.

Yang Yifei tilted his head and said, "Come on!" Try throwing one by one, remember to use some force, or throw a little higher, the thunderbolt will explode and need some impact. ”

"Also, try to throw it away from five zhang so as not to hurt yourself, especially after adding ingredients later."

After listening to Yang Yifei's explanation, the two firmly remembered that Mao Shibai took a thunderbolt and said with great interest: "I'll come first." ”

After speaking, he threw it in his hand, and as soon as he raised his hand, he threw it into the distance, not to mention the strength of Mao Eighteen's hand, he threw it casually, and the thunderbolt flew out of fifteen or sixteen zhang, crossed a parabola, and fell to the ground.

"Boom"

"Wow"

There was a roar more than ten zhang away, firelight and black smoke rose up, and dirt splashed everywhere, not to mention that Wei Xiaobao was startled, and even Mao Shibai himself was shocked.

"Hahahaha...... It's strong enough, it's too powerful, with this kind of big killer, it's a big thing to get in this world. Mao 18 looked at the scene after the thunderbolt exploded and laughed excitedly.

The power of this thunderbolt made Yang Yifei himself surprised, looking at its explosive effect, the power was no longer under the offensive grenade.

"Now, Xiaobao, you can try it too."

Caught off guard just now, Wei Xiaobao's heart was pounding with fright from the explosion, but now that he knew the situation of this thunderbolt, he was naturally mentally prepared.

After receiving the thunderbolt, he threw it forward with all his might, and immediately covered his ears.

Wei Xiaobao's hand strength is naturally incomparable to Mao Shiba's, and he only throws it out four or five zhang, but it is enough.

"Boom"

There was another explosion, Yang Yifei nodded secretly, very good, there was no dud bomb in the first manufacture, but he did not lose face.

There was only the last one left in his hand, but Yang Yifei didn't just throw it out like this, but looked at a thigh-thick tree six or seven feet away, and threw the thunderbolt at the trunk.

"Boom"

"Wow"

Not surprisingly, the tree was blown off by the barricade and fell.

It's far enough from the town, and it's in the middle of a dense forest, and the sound is blocked by the trees, so you can't get far enough to hear the explosion.

With this test, Yang Yifei knew what to expect, and sent Mao Shibai and Wei Xiaobao to pick up stones everywhere, while Yang Yifei placed the tin foil one by one and poured gunpowder on it.

Now there is no need to weigh one by one, it doesn't matter if there is more or less, there is no need to be so precise, he roughly remembers how big the two taels of gunpowder are, so the speed is much faster.

He didn't use all of them, except for the big thunderbolts, he also made some smaller ones, only the size of an egg.

These smaller ones will be used as their self-defense weapons, and the large thunderbolts are naturally used when taking prisoners.

He won't add all of them, after all, when robbing prisoners, he also has to consider not injuring prisoners by mistake, so he made two kinds of them.

Well, it can be divided into offensive and defensive thunderbolts.