Theoretically, it can really make something like a bird and fly into the sky.

Huang Chengyan was shocked again.

He also knew the magic of the trick, such as the steam engine, which could still be touched and seen.

In this flying sky, he really didn't dare to think about it, but he didn't expect Xu Ding to say that it was achievable.

Huang Yueying was a little disappointed, it turned out that this could only be theoretically feasible, but it couldn't be done.

"But the steam engine can't do it, but the internal combustion engine does, and the internal combustion engine is a more complex and compact power engine, and you can fly into the sky with that thing and a reasonable wing." Xu Ding saw that Huang Yueying was a little disappointed, so he said another artifact.

Internal combustion engine?

What is this?

Huang Chengyan is really blind, he doesn't know a lot of things anyway, but Xu Ding can always come up with some special things to do.

"To put it simply, the steam engine is to use the pressure generated by the boiling of water energy to convert it into kinetic energy, and the internal combustion engine is to use the heat energy generated by burning oil to convert it into power and conduct it, the output power of the internal combustion engine is much larger than that of the steam engine, and the weight is lighter, so it will be another product that changes the world after the steam engine, of course, for the time being, I don't know how to get these things, I hope you can get it out when you are old." Xu Ding dug a pit and said to Huang Chengyan with a smile.

Huang Chengyan was listening energetically, an oil-burning machine turned heat energy into kinetic energy, and there was no end to it, and then Xu Ding still wanted him to do this kind of thing.

This is the rhythm that wants to develop him as a long-term worker until death.

Huang Yueying smiled when she heard this.

The internal combustion engine doesn't need to be thought about for the time being, it feels more mysterious than the steam engine.

Flying dreams, how can it be so easy to achieve.

"That's it! All right! If you can't fly to the sky, you can't fly to the sky, a steam engine is enough for me to work for most of my life, you leave this matter to Yueying, I don't care. Huang Chengyan directly picked his son and quit, he came to enjoy the blessings, he wanted to marry his daughter as soon as possible, but he didn't marry yet, and he worked for so many years in vain.

It's a loss!

It's a big loss.

"Uh...... Well, it's okay not to do it for the time being, let's get the steam engine into play as much as possible, and then we'll have enough to get it for decades. Xu Ding also knew that this matter would not come soon, with Lao Huang's knowledge structure, it was fortunate to be able to make a steam engine to make a scripture, and it was really embarrassing to figure out the internal combustion engine.

But when he thought of Feitian, he rolled his eyes and said: "But if you want to fly, it's actually simple, you don't need a complicated machine, you only need a ball, a big hanging basket and a heating device, I call it a hot air balloon, go, Sister Yueying, I'll take you to do a thermal test and tell you the principle." ”

The principle of hot air balloons is very simple, that is, the air through hot air is lighter than cold air quality, so it can generate buoyancy.

All you need is a through pipe, and the fire is burned underneath, and the hot air generated enters the ventilation pipe, and a light object is placed on the top of the pipe, and the light material can float on the top of the ventilation pipe.

Simple and straightforward trials.

"I see, it's so easy to make! Yueying and Bo Kang studied slowly, get it out early, I will sit on this hot air balloon when I arrive, float up to the sky to see, and feel what the clouds feel......" Lao Huang understood the principle of heat well, nodded frequently, and then walked away.

Everything is like this, and when you understand it, it doesn't seem profound.

Lao Huang thinks that his steam engine is more awesome, so let his daughter do things like hot air balloons.

Thinking about the steam engine, such a super-large guy hula hula rumble, Lao Huang is proud and excited, this is what a real man plays.

Taking advantage of Huang Yueying's efforts to make hot air balloons, Mao Jue came over.

"My lord! You called me here, but what's the main thing? "Now Weiyuan Island is mainly in charge of Mao Jue, and now he has become the chief manager, and the military, government and people on the island have to take care of everything, and they are still very busy in normal times.

Xu Ding put down the knife in his hand, then pointed to the table not far away, the two went over to sit down, Xu Ding wiped his sweat and said:

"How many new coins have we minted now?"

Weiyuan Island is rich in copper, and there are several large copper mines on the island, and Xu Ding has been digging and refining since he got the smelting technical information.

After so many years of continuous excavation and refining, it can be described as a mountain of piles, and ten underground warehouses used to store copper have been built.

Xu Ding had long been planning to use brass to mint coins and mint new five-baht coins.

The front side is engraved with the word five baht like the original money, and four new words are added on the reverse side, and the inner two sides of the round edge of the money are added to the gear-shaped regulation to prevent someone from deliberately wearing and shearing.

"The lord is about two billion!" After the report, Mao Jue asked:

"Lord, are you going to carry out the economic war you said?"

Mao Jue was sure that if all the brass on the island was cast into five baht coins, it would definitely be able to smash the entire Han Dynasty, even if the money of all the families and people of the entire Han Dynasty combined, it would not be as much as Weiyuan Island.

Therefore, it is precisely because of this confidence and economic strength that none of the early generals and Wenchen who followed Xu Ding betrayed him, which is not only because of loyalty, but also because of the strength of Weiyuan Island.

Xu Dingding nodded: "Almost, this money is mainly used to buy materials and food from various states and counties, and all new money with gear wear is not allowed to circulate and be used under our rule, but you can go to the government to exchange for new currency." ”

The brass texture is brighter and shiny than a simple cylinder, not easy to oxidize and discolor, and the hardness is also higher and not easy to wear, which is more suitable for circulation and trading.

The reason why brass is superior to ordinary copper is because of the zinc added to it.

The brass copper content selected is about 65 to 75 percent.

So the copper content of the new coin has actually dropped by about 25 to 35 percent.

In this way, even if the bad currency drives out the good money, the new currency has an advantage, and there is no need to worry about the possibility of some speculators melting the new currency to make the old currency and making the difference in price.

If they do, they will 100% suffer and cry.

Of course, it is inevitable that the consumption of zinc ore is not small.

However, there is no need to worry about this aspect, China is a big country lacking copper, but it is not a big country lacking zinc.

According to the land area of later generations, China's zinc ore reserves are huge, ranking second in the world.

At the same time, it occupies the fourth place among the major minerals in China.

Most of the zinc mines in Shandong Province in later generations were distributed on the Jiaozhou Peninsula.

The Jiaozhou Peninsula is now Donglai County and Beihai Kingdom.

Qucheng County, under the rule of Donglai, has a large zinc mine mined.

Zinc ore is a semi-raw ore, mainly with lead, so it is also called lead-zinc ore.

The main use of zinc in later generations was mainly to make batteries.

Now Xu Ding has not yet developed to electricity, so the zinc produced is completely useless, and it is better to participate in copper to smelt brass.

Therefore, Xu Ding naturally does not have to worry about the lack of zinc, and can boldly mint new coins.

If you really need a lot of zinc one day, you can take back the new coins and switch to silver, the mainstream currency.

Of course, the first thing is that he has to find a large silver mine so that he can carry out a second currency reform and upgrade.