Looking at the sea of ​​fire spreading in front of him, Dennis's expression became very solemn. Although such an attack was not a threat to the great wizard, an ordinary formal wizard would probably have no chance of survival if he encountered it.

The wizards from the Alchemy Society couldn't help but show horror on their faces, and their attitudes that had originally been fierce and ready to argue with Lin En suddenly softened a lot.

Raphael remembered that he had seen an alchemical powder that would explode if it came into contact with fire, but it was far less destructive than this.

"This is black gunpowder. I once used it to destroy half of a harbor city." Without waiting for anyone to ask, Lin En took the initiative to introduce it, and then shook his head. "It's a pity..."

"What a pity?" Raphael asked hurriedly. "Could it be that the production cost is too high?"

"No, the production of black powder is not complicated." Lin En explained. "I mean the power is still a little bit lacking!"

If black powder is not mixed with fillers such as white phosphorus, the power of its explosion is actually very limited, far less than TNT or RDX (cyclone dynamite).

Is that enough? Everyone looked a little strange. Could it be that Lin En was going to use this thing to set a trap to deal with those cardinals? Orlando and others were excitedly discussing how to use the powerful destructive power of black powder in war.

"I know... I know!" Lydia waved her longbow, attracting everyone's attention, and confidently spoke of her new idea. "We can fill the alchemy cart with this black 'stone' and rush into the crowd!"

Raphael and others couldn't help but nodded. This was a good way to exert its power.

Oh my goodness, a self-destructing truck, huh? You'd be wasting your talent if you didn't go out and do a terrorist attack! Lin En said with a smile. "In fact, it's used to mine ore!"

Raphael and others were shocked.

They have just seen the power of gunpowder, which is not weaker than the magic crystal cannon. Yet you actually used it for mining?

Lin En was also helpless. The biggest problem in the development of Yieta Port now was that the output of various minerals was far from enough.

Especially steel, which is the foundation of all industries.

Although there is an iron mine near Yieta, the mining efficiency is very touching and relying solely on manpower is far from enough.

It's not impossible to let the wizard bombard with fire magic.

But wizards are all very valuable, so no one would be willing to do this.

Relying on those wizard apprentices? Forget it.

Gunpowder is naturally the best choice. Later, we can consider whether to set up a musket team or an artillery team.

The test of the power of black powder was undoubtedly a complete success, except for Lynn himself who was somewhat dissatisfied and surprised. Dennis soon got to see the latest alchemical four-wheeled vehicle equipped with an internal combustion engine as he wished.

Philip and others who made it can be said that they took the idea of ​​saving steel instilled by Lynn to the extreme, adhering to minimalism and pragmatism, in short, as long as it can haul ore! This makes its appearance look very simple, with a steel frame, which forms a sharp contrast with the gorgeous steam carriage next to it.

When they saw this thing for the first time, the wizards of the Alchemy Society couldn't help but feel a bit of contempt.

Just like that... Just like that? However, after riding the four-wheeled vehicle on the road of Yieta for a week, feeling the extraordinary speed, everyone fell silent. Dennis was even more dejected and said nothing, his face full of despair.

"Mr. Lin, can you let me see the blueprint of the internal combustion engine?" A wizard from the Alchemy Association asked unwillingly.

However, he also understood that it was impossible for the other party to come up with such core technology.

Lin En, who originally wanted to recruit people to do research, was very generous and directly asked Orlando to bring the design drawings.

When the wizard took the blueprint, his hands were shaking. He couldn't believe that the other party would hand over such a precious thing to him so easily.

Dennis and others couldn't help but gather together to check it out.

The drawings are very detailed, even the internal parts and structures are marked out.

There was no need for Lin En to explain. After a discussion, the wizards from the Alchemy Association quickly figured out the structure and function of each part of the internal combustion engine.

"This should be a piston, just like a steam engine, used to provide power."

"The operating principle is very similar to that of a steam engine. The difference is that the combustion process of an internal combustion engine takes place inside the instrument. Is this what internal combustion means?"

The earliest steam engines can also be called external combustion engines because the combustion process takes place externally, using steam expansion to push the piston, so a lot of energy is lost.

The internal combustion engine is different. It exchanges air through an alchemical array and an outlet. The entire combustion process is confined inside the cylinder, and the power it provides is naturally much more powerful than steam.

"What a genius idea!" Dennis said with emotion, and many plans for improving the steam engine emerged in his mind. However, he knew that no matter how much improvement was made, it would be difficult to compare with the internal combustion engine in terms of efficiency.

"I have a question. This alchemical internal combustion engine is a creation of your Yieta School. Why are you willing to give us the drawings to look at..." Dennis asked puzzled.

"I have always believed that knowledge and truth are never afraid of spreading and communicating!" Lin En replied calmly. "A person's power and wisdom are too small. Even if he specializes in a certain field, he may never see its limit in his lifetime..."

"Magic theory needs innovation. If everyone sticks to their own school of thought, I don't think the wizarding world would have the brilliant magic system it has today."

As for another point, Lin En did not mention it. The internal combustion engine was just an obsolete technology in the previous life. In his eyes, it was just a transitional thing.

Hearing Lin En's words, all the wizards in the Alchemy Association were shocked.

As researchers and inventors of steam engines, they strictly guarded against this special alchemical technology and would never allow wizards from other schools to dismantle and study related instruments privately, believing that this was outright theft! Although they were unable to completely stop the outflow of technology in the end...

However, Lin En did not care about the differences between the schools at all and directly handed the core drawings to them for review. What a broad mind...

Thinking of this, Dennis couldn't help feeling a little ashamed...

(PS: I only owe one chapter for rewards now, which I will complete tomorrow. As for the additional chapters for subscriptions, the total increase so far is more than 900 average subscriptions, which is four chapters. I will save the manuscripts and add more chapters when the number is rounded up.) (End of this chapter)