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When sulfuric acid comes out, nitric acid is simple.

With nitric acid, silver nitride, all kinds of nitrifying explosives, propellants, that's also a matter of minutes.

Thundermercury is the primer.

Mine-mercury propellants are available, copper is readily available - just content with reloading bullets?

Is it possible!

However, although all the conditions for making their own bullets seem to have been met, there is one most crucial thing, and the detachment does not have it at all!

That's the punch!

Since the last time Cheng Dongshan mentioned the punch to himself, Zhang Ran can't be said to be careless.

Not only in Dongjiang County, Cangshui County, but also in Lingjiang Yangquan Yuanguang, Zhang Ran is asking people to inquire.

It's a pity that after a few decades, you just need to squeak and slap the banknote on the table, and you can get all kinds of punches with various models.

But not in this era.

Zhang Ran promised all kinds of benefits, fertilizers, ammunition, grenades, anything, fiat currency, oceans, small yellow croaker, big yellow croaker, and even calligraphy and painting antiques, he has photographed them, but he can't get them.

Even Ma Chengbang and other landlords can't do it.

Zhang Ran felt that now he could only make his own soil law!

But he didn't dare to tell Cheng Dongshan about this.

Cheng Dongshan has been trying to block himself for things all the time these days, and it's too late to hide, he won't rush over to find discomfort, after all, he can't get any of the things that Cheng Dongshan wants.

He decided to do it himself first, and then tell Cheng Dongshan when it was almost time, and first take something to gag his mouth, Zhang Ran estimated that it would be much easier for him to get out by then.

Just returned to the branch, and before Zhang Ran called the carpenter Lao Zheng over, he collided with Ren Haifang Kelangzi.

"When did you come back? Worked hard along the way, right? ”

Zhang Ran was very happy to see these two guys who had been transformed from burden-carrying peddlers into revolutionary fighters and had played a great role in the detachment's previous battles.

"I just arrived, and I just finished the handover with Secretary Wang......"

Ke Langzi Ren Haifang laughed dryly, and shrank back with his hands behind his back.

"What are you shrinking, you've seen it!"

Zhang Ran glared angrily: "It's all what you should earn, what's so embarrassing?" You follow the detachment to participate in the revolution, that is because you are conscious, but when you participate in the revolution, you also have to eat and feed your family, right? ”

It's good that he didn't open his mouth, but the two of them were even more embarrassed to find a crack in the ground to get into, and they all wanted to return the two big yellow croakers that had just arrived and were not hot.

"Captain, these two guys aren't authentic......"

Waiting for Zhang Ran to enter the house, Wang Changtian sighed and said: "Although we did promise them before, we would accept as many salt as they wanted, but what they helped us find, our detachment also gave money, and we should earn it back to them, can we stop collecting salt?" ”

As he spoke, he spread the account book to Zhang Ran with a distressed face: "This time today, these two guys have brought back ten picks of salt for our detachment, plus the bits and pieces saved before, and now there are almost fifty picks of salt in the detachment's warehouse - our detachment has to eat the Year of the Monkey to eat it......"

"Secretary Wang, our Eighth Route Army is a team that stresses honesty and principles, and what we say is water that is spilled, how can there be a reason why words are not words?"

Zhang Ran can't say that in another half a year, the little devil will completely blockade all the base areas behind enemy lines, and it will be more difficult to bring some salt back than to ascend to the sky!

At that time, not to mention ordinary people and soldiers, even the supreme leaders of our army will make it difficult to eat some salt all day long - he can clearly remember that in history, a certain leader of our army could only eat potassium salt for a long time because he did not have normal salt to eat, and finally ate potassium salt poisoning, and almost became a leader who died because he did not have normal salt to eat!

It can be seen how much salt will be in short supply at that time!

When we have the opportunity now, we can store more salt in the base areas, not to mention that we can help other base areas behind enemy lines, at least in our own base areas, there will not be too much shortage of salt, and we will not have to eat the kind of potassium salt that will seriously damage our health because we have no salt.

It's good that you don't know if it's okay to steal fun, but you still feel that Ren Haifang is not satisfied, and he doesn't have the consciousness of being a revolutionary fighter, so he has to take Yanba back and continue to take advantage of the detachment......

"Captain, do you think you can't pull your face?"

Wang Changtian didn't notice that Zhang Ran was secretly happy now because he had stored a lot of salt, and he was very empathetic and volunteered to help Zhang Ran solve his worries: "You are embarrassed to say, I will go and tell the two of them that as long as they can take less salt back, it doesn't matter if I am the secretary of the base area......

"Secretary Wang, don't mess around......"

Zhang Ran was startled, and said in his heart that you are going to do something for me - for a few oceans to ruin my big thing, and there will be no salt to eat in the base area when the time comes, then your sin will be great, let me tell you!

After some bitter talk, Zhang Ran finally made Wang Changtian dispel the behavior of almost doing bad things with good intentions in order to save money, and then asked: "What did Ke Langzi bring back this time, and they actually dared to bring ten picks of salt back at a time to earn the money of the detachment, and they are not afraid that the detachment will not want it?" ”

"Isn't it the glue and emery you want to make for grinding wheels, captain said!"

Wang Changtian puffed up and pointed to some large barrels of glue in the corner, as well as bags of corundum road.

"These two guys, they really got me back!"

Zhang Ran opened the bag and bucket and looked at it, and shouted excitedly - this is definitely the emery he wants, and it can't be wrong!

Ever since he knew that the little devil used big rails on the railway to the provincial capital, Zhang Ran thought of the idea of using a grinding wheel cutter to steal the rails.

The grinding wheel cutting machine must have a grinding wheel, and the grinding wheel, emery and glue are indispensable.

Glue, whether synthetic or natural, is actually not difficult to find, so from the beginning, Zhang Ran was most worried about not finding the emery he wanted.

Emery was discovered in the XVIII century.

At that time, a scientist had the idea of making a fortune by using a high-voltage arc of coke and clay to make diamonds.

Unexpectedly, diamonds were not created, but this new substance with high hardness and high temperature resistance was invented, emery.

Anyway, emery is not a natural occurrence that can be found, it is synthetic, and it is not common.

So Zhang Ran has been worried that he can't find this thing in China.

Ke Langzi and Ren Haifang were able to successfully find the emery that Zhang Ran wanted, but they were actually very lucky.

Because of these characteristics of high hardness and high temperature resistance of emery, it is widely used in the polishing of high-hardness substances, and the jade masters who process various high-hardness jade in China just need such emery, so this uncommon thing appeared in China and fell into Zhang Ran's hands through various channels.

Nowadays, whether the grinding wheel and the grinding wheel cutting machine have been invented, Zhang Ran does not know at all.

What he does know is that in his own memory, the Eighth Route Army must not have used a grinding wheel cutter when he turned into a road picker to steal the little devil rails—because the Eighth Route Army stole the kind of small rails that can be carried away by a few people, and the big rails can almost only be destroyed.

"If the grinding wheel cutter hasn't been invented before I make it first, it will be fun, hehehe......"

Thinking of the consequences of this grinding wheel cutting machine being invented by himself, Zhang Ran smiled happily.

Not only can he use this grinding wheel cutter to get past the addiction of a fake scientist, but he also looked for Deng Fang to shake off his majesty - anyway, when he thought of Deng Fang's contempt for him just now, he was angry.

Of course, that's not the most important thing.

The most important thing is that after the grinding wheel cutting machine was invented, it was promoted to all the base areas behind enemy lines, and every Eighth Route Army, guerrilla army, and military engineering team were equipped, Zhang Ran believed that when the time came, everyone would use this grinding wheel cutting machine to pick up the rails of the little devils everywhere, and the little devils who could pick up cried and shouted to their fathers to let them go......

Thinking of a group of people carrying a grinding wheel cutting machine, rushing up to the rails is a slam cut, the rails that originally needed a few brilliant men to carry away, were cut into small sections within minutes, and any person could carry the same as following the trend, the little devil came to chase and couldn't catch up, Zhang Ran's heart blossomed!

Grinding wheels, which were widely used for steel cutting decades later, are made by bonding and hardening emery and glue.

But it's not just any glue and emery bonding that can make a grinding wheel that can cut steel!

Although Zhang Ran reminded him of the characteristics that glue should have when he asked Ke Langzi and Ren Haifang to help him find emery and glue, Zhang Ran still doubted whether these glues could meet the requirements of making grinding wheels.

But these things can't be rushed.

Anyway, these glues have been brought back, Zhang Ran decided to experiment slowly, if these glues can't make grinding wheels, and then let the two find other glues, or find their own way to synthesize, it's okay.

Although he knew that it would be difficult to successfully make a grinding wheel, Zhang Ran believed that he would definitely be able to get a grinding wheel cutting machine.

From scratch, Yanggou Town, a poor mountain village where birds don't, has turned into a revolutionary hot land, watching the emergence of copper smelters and coking plants, and watching the emergence of sulfuric acid......

These things have added endless confidence to Zhang Ran.

Man will conquer the sky!

In the past, this sentence was just a slogan in Zhang Ran's eyes, but now after experiencing so much, he really believes that as long as he has perseverance, perseverance and determination, he can really win the day!

"Captain, are you looking for me?"

The carpenter Lao Zheng rushed in with the sweat on his forehead at this time, and asked Zhang Ran what was the matter with him.