Today Manica is here again, this time not with the yellow-skinned bear, but with a person. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info Duge was dumbfounded, not only him, but Yifeng was also dumbfounded, staying where he was.

"Manica, this is your third prince?..."

Manica smiled lightly, showed a soothing smile, and told a little story.

"Last night, my sister was sitting alone in the room with some happy things, but my brother got drunk because of the drinking party and accidentally broke into my sister's room. Seeing that her sister who is like a flower and jade has done such a thing. He roared angrily, and finally pulled out a big stick and taught his sister a hard lesson. My sister was by her brother to death, and some fell in love with her brother's stick. So, the younger sister asked her brother to punish herself with a stick often in the future. Of course, my brother happily agreed. ”

Listening to this story, Du Ge and Yifeng suddenly realized.

"Your circle is really messy, you need German orthopedics. ”

"What's that?"

"It's nothing, come here and lie down and accept today's training. ”

"Yes ~ "

The third prince drinks tea downstairs, and Du Ge and Yifeng on the second floor are training Manica every day.

Everything is developing in an orderly manner, and fast food restaurants are constantly popping up after a rain, and new motherboards are opening all over Doroman. Manica's daily training has gone further and further in German orthopedics.

After a few more days, Duge came up with something.

That's metal rust prevention technology.

In this day and age, human magic, while magical, is not omnipotent. When it comes to the rust of metal, magic doesn't provide protection. Every year, there are countless scrap irons because of rust, which can account for 1/3 of the total. Just like the humans on Earth, they were plagued by the rust of iron.

Especially in countries like Domanro, metals are imported as precious goods.

The technology that Duge came up with is of epoch-making significance.

The principle of metal rust is complex, and there are many kinds of anti-rust measures.

Changing the internal structure of metals, such as making various corrosion-resistant alloys, such as adding chromium, nickel, etc. to ordinary steel to make stainless steel.

Or cover the metal surface with a protective layer to isolate the metal products from the surrounding corrosive medium, so as to prevent corrosion. For example, oiling, varnishing, or electroplating methods to evenly cover a layer of corrosion-resistant metal, or passivate the original metal to form a dense oxide layer.

Or electrochemical protection method, this method is mainly to curb electrochemical corrosion, the active metal is connected to the protected metal, when galvanic corrosion occurs, this active metal as the negative electrode oxidation reaction, thus reducing or preventing the corrosion of the protected metal.

In the Chute Mountains, where "Sanduo" is located, the air humidity is still very large, and the metal is mainly corroded, or electrochemical corrosion.

Therefore, Duge intends to introduce the coating method and the electrochemical protection method.

The former is to coat a layer of copper film on the surface of the metal by chemical or physical methods. The latter is to add a small piece of more reactive metal, zinc, magnesium, aluminum, etc., to the iron.

He chose both methods.

The main reason is that the technology is not easy to leak.

People in this world more or less know some of the principles of metal corrosion, but if they want to say that they have studied it systematically, Du Ge doesn't believe it. The two methods he came up with, whether it was coating or reactive metal, were not something that anyone else could learn.

In this way, the golden spiral will form a monopoly technology in a short period of time.

A monopoly......

And the gold coin came with a bang.

"Set a small goal first and earn him 100 million. ”

When Du Ge said this little goal, he scared the people of the Golden Spiral.

During this period of time, although they continued to sing the luxury goods and frantically attracted gold in Domoro, it was only to the point of tens of millions of gold coin assets. 100 million units, they still don't dare to think about it, and now, Du Ge casually put it forward.

"One...... 100 million...... Are you right?"

"No, it's simple, if you have a monopoly technology, it's not too easy. ”

Du Ge crossed his shoulders and disagreed.

With a system, he can come up with monopoly technology all the time, which is almost equivalent to his unlimited wealth. However, it will take some twists and turns to get the gold coins of this world.

"Then we sell to Dommanro, they are so short of metal. ”

"No, it can't be sold to Dommanro. ”

"Why? And to whom?"

Wataru grinned and didn't answer. He continued to use his technology in Dormanro, and his main target was Dono, a small country near Domoro, near the Varaslan Mountains, who were the main source of metals for Dormanro, and who made a living from the production and export of iron. What he has to do is to gradually control Domanro through iron checks and balances. And then through other resource constraints, in turn to control Dono.

In the midst of this, it takes a lot of twists and turns.

Before that, Du Ge still had to care about the matter of the fast food restaurant, and he first asked:

"How did the other two countries respond? ”

"Their aristocrats are quite optimistic about the fast food industry, and even some aristocrats have contacted us through the downline and want to open the Silver Fox as an agent of the Golden Spiral in their country. ”

Hearing this, Du Ge smiled slightly.

"It's a big piece of cake, and everyone wants to grab it. ”

"What should I do about Duge? Do you still need twenty-eight points of interest?"

"No, we don't have to go to their country to buy land, and then we open our own shop, and we don't need anyone to act as an agent. We just need to pay enough taxes to the local king. ”

During this time, under the publicity of Dommanro, fast food restaurants have spread all over the "three more".

Under the praise of the gods, people are very curious, what is this rising fast food, and how delicious it is, will arouse the praise and publicity of Manluo Dali. Their nobility even took pride in eating at the Silver Fox.

This Golden Spiral opened a fast food restaurant, which provided great convenience.

"Now that the market in Dormanro is full, it's time for us to expand outward. ”

Watari chuckled and made the decision to expand into the other two countries.

The behemoth of the Golden Spiral has also begun to act, money can make the devil grind, and the Golden Spiral is now supported by a huge treasury, and everything is completed quickly. What difficulties were encountered, a bag of gold coins smashed over, and it was solved in minutes.

That's all, in a short period of time.

Golden Spiral bought land, opened branches, and gained a steady stream of food in the other two countries.

As for advertising, not at all. What Dommanro has already helped them promote can no longer be promoted. As soon as the gossip about the opening of the store came out, the city where it was located was almost known to the whole city.

Curious people gathered around to find out.

And the taste of fast food conquers everyone in minutes.

Those who ate it immediately accepted the taste and became a regular repeat customer. The fast food industry has spread rapidly in his two countries due to its cheap and delicious characteristics. The authorities did not oppose such shops, on the contrary, they encouraged them, because through taxation they could divide the two parts of the gold spiral.

The rise of fast food restaurants has also brought a lot of revenue to the local government.

It's just that those traditional catering industries that have been excluded have launched exclusion and joint sanctions against the Golden Spiral. It's just that their abilities are too weak. With the support of the local government and the people, the golden spiral will not fall.

After the development of fast food stabilized, Duge put metal rust prevention on the agenda.