It turned out that Cao Cao had this idea, and Chen Yang happened to put it forward, and the heroes had similar opinions.

"After we had the iron hoofs and stirrups, the strength of the cavalry was enhanced and we performed very well when we fought against Yuan Shu."

Cao Cao expressed his thoughts and said, "So, if this expedition can be successful, I will unify the north and truly establish a team of extremely powerful cavalry. This kind of cavalry can only be commanded by our Cao generals, and only obey my orders!"

This is true. The three commanders of the tiger and leopard cavalry in history are Cao Zhen, Cao Xiu and Cao Chun, which are in line with the history that Chen Yang knows.

Hearing him say this, he was also preparing for Cao Ang later.

Chen Yang said: "The Prime Minister is also far-sighted."

Cao Cao laughed and said, "If you want to be far-sighted, I am far inferior to Zi'an. You have already thought about the cavalry."

The two talked and laughed, and soon arrived at the place where the three-bow crossbow and thunderbolt chariot were made in the military camp.

"Prime Minister, lord!"

When Ma Jun and others saw this, they immediately stopped the movements in their hands, turned around and said respectfully.

Chen Yang nodded and said, "Others continue, Ma Jun, come with me!"

This time he came to Cao's army camp. In addition to mentioning Cao Cao about establishing the Tiger and Leopard Cavalry, his other purpose was to find Ma Jun.

Under Chen Yang's leadership, they went to an empty place in the military camp together.

Cao Cao asked curiously: "Zi'an, do you have any good things to show us?"

Chen Yang stopped talking, he raised his hand.

Seeing this, Wang Yue took off three big bags of things from his body and placed them in front of Chen Yang.

After Chen Yang opened it, Ma Jun looked at it for a while and said, "What are charcoal, sulfur and saltpeter in it?"

As expected, he was a great inventor of the Three Kingdoms, and he could recognize these things so quickly. Chen Yang nodded and said, "That's right, although these things are ordinary, they are also very useful!"

Cao Cao couldn't see what it was for, and asked curiously: "What are these things?"

Chen Yang separated the three things in proportion, and then said, "What's the use? You will know later, but I don't guarantee that it will succeed."

As he said that, he asked the soldiers to find some tools, first mix and grind charcoal and other things in proportion, and finally put them in the wooden trough to stir, mix the three powders together fully, forming a pile of dark powder.

After completing this step, Chen Yang poured him on the ground and said, "Prime Minister, please get a torch, and then let's stay away and ignite the powder."

Ma Jun knew that Chen Yang's idea could be wild, so he curiously studied the powder in front of him.

Cao Cao didn't understand what this meant, but he did as he did, asking a soldier to get the fire notes and ignite the black powder.

But no matter how the soldier ignites it, the powder did not change, which made Cao Cao even more confused.

"Zi'an, has the thing you want to make failed?" Cao Cao said.

"It's indeed a failure, but it doesn't matter. We have more raw materials, so I'll try again!"

Chen Yang continued to toss those things and re-equipped them according to the new proportion.

This time, he did more meticulously, but he failed in the end.

In desperation, Chen Yang began to match the third portion, absorbed the failed experience of the first two times, and it took almost half an hour to complete the third time.

"You try again!"

Chen Yang poured the powder on the ground, glanced at the soldier who had just ignited it, and continued: "Be careful, and you will ignite it later, and run faster."

The soldier was puzzled when he heard this, thinking that this powder could really ignite it?

However, he didn't take Chen Yang's reminder seriously, picked up the fire stick and went to the powder point, at this moment...

boom!

A dazzling fire suddenly appeared in front of them, and then there were still waves of unpleasant and irritating smells, filling the air.

"Be careful, Prime Minister!"

Dian Wei and Xu Chu only thought there was some danger and immediately stood in front of Cao Cao.

Chen Yang was also frightened by the fire. He quickly calmed down and murmured: "It's really successful!"

At this time, the soldier who went to light the fire sat on the ground. He didn't care about Chen Yang's reminder, so his hair, eyebrows, etc. were almost burned. Fortunately, the powder was not very powerful, and others were fine, but he was so scared that he was trembling all over.

"Old Xu, take him down to rest for a while!" Chen Yang pointed to the soldier.

Xu Chu dragged him down.

"Zi'an, what happened just now?" Cao Cao finally came to his senses and asked in shock.

"The powder just now was called fire medicine!"

A long time ago, Chen Yang thought about making hot weapons. He couldn't make modern guns, but it was not a problem to make some fire and make some medicine that would explode.

As for how to make it, Chen Yang still remembers the recipe.

Therefore, Chen Yang said again: "But the effect of fire medicine is not only that, I will make another one for you to see."

After saying that, Chen Yang immediately started and made another portion. This was the fourth proportional ratio, and he seemed more skillful in doing it.

In addition, he wrapped the fire medicine made of paper, pressed it tightly, and used lines made of cotton as leads.

"Don't be too surprised when you wait!"

Chen Yang smiled confidently, and he picked up the fire note and wanted to light the lead.

"Shopkeeper Chen, let me do it!"

Dian Wei was worried that Chen Yang would be in danger, so he quickly grabbed the fire note.

Since that's the case, Chen Yang is not polite. He took several steps back after handing it to Dian Wei.

Dian Wei ignited him, and he quickly retreated.

boom!

At this time, a deafening sound rang in the open space, frightening Cao Cao and the others to the point of being unable to recover for a long time.

"Shopkeeper Chen, what are you doing? It's even louder than thunder!" Dian Wei said in shock first.

"Does that fire and medicine cause lethality?" Cao Cao immediately thought about the military and asked expectantly.

"If it can be used properly, it is no problem to break mountains and crack rocks!"

Chen Yang nodded, then his eyes fell on Ma Jun, and said, "Did you see clearly just now? How to think about this fire and medicine, it depends on your efforts in the future, but you must remember that this thing is extremely dangerous and cannot have any sparks!"

Hearing Chen Yang's words, Ma Jun fell into deep thought. It took him a long time to say, "I understand!"

"It can actually break mountains and crack stones!"

Cao Cao said excitedly: "Is this thing really so powerful?"

Chen Yang nodded, but he said again: "I still want to remind you that you must pay attention to safety when making it. This thing is like a double-edged sword, which can hurt others and yourself!"

Next, Chen Yang taught Ma Jun how to make and use it.

Then, he and Cao Cao left the barracks and returned to Xudu.

As soon as he walked to the gate of Xudu City, Cao Cao, who was riding on the horse, suddenly let out a low moan of pain. His body shook for a moment, and he couldn't sit steadily and was about to fall off.

"Prime Minister!"

Chen Yang was about to catch him, but Xu Chu moved faster and took Cao Cao and put it on the ground.

Several other guards surrounded them in an instant.

"It's not in the way, my head is in trouble again!"
Chapter completed!