In fact, electricity is also easy to obtain, but there are magnets in this era, as long as you find a magnet, and then wrap a movable coil around it, and then make the coil rotate rapidly through a steam engine, an electric current will be generated, and the prototype of an electric engine is born.

When Liu Yuetian let the visible "lightning" appear in front of everyone, even a "science expert" like Gao Huan couldn't close it for a long time with his mouth open.

Control the lightning? This is a fairy!

"This is the principle of electromagnetic conversion, the magnet can provide a magnetic field, as long as the metal wire moves in the magnetic field, it will produce an electric current, and the lightning in the sky, is a discharge phenomenon between voltages, they are essentially electric currents, but the two are very different, you are just ignorant to confuse the two."

Zu Chong said calmly, the theoretical knowledge he has in his mind now is not much better than some scientists in Liu Yuetian's previous life, but this world lacks relevant experimental equipment, and many theories cannot be verified.

"Electric current......... What is it for? ”

Gao Huan looked at the fast-rotating coil and the glowing electric current on the side and asked curiously.

"This current is a more powerful power than the steam engine, the development of science and technology is from manpower to the steam engine, and then electricity, of course, we are not yet fully popularized in the era of the steam engine, we have not yet used the power system, but the development of the times is unstoppable, you as the pioneer of this era, you must be one step ahead, how high the vision, how far you have the road ahead."

Those present were Liu Yuetian's close subordinates, especially Gao Huan, Zu Chongzhi, Meng Sheng, Yin Long, etc., whose pursuit of science and technology far exceeded ordinary people.

"Brother Zu, how is the Academy of Sciences now? Are there any good seedlings? ”

In the past few years, the Academy of Sciences that Zu Chongzhi is in charge of has opened several across the country, and Datang and Dawei have strongly supported it.

"Now we have 10 academies of science in the country, with more than 2,000 students, but after all, the academy of sciences has been established for a short time, and the earliest batch of students is only 14 or 5 years old, and all these people have been recruited by us to the National Academy of Sciences for further study, and I believe that in three or four years they will achieve something."

Zu Chongzhi introduced.

"These people are talents, they must be reused, each of them can not be wasted, and the national laboratory must also prepare as soon as possible, use a lot of money and manpower to manufacture some advanced machinery in the laboratory first, and then slowly promote it to the people."

Liu Yuetian nodded and said.

"Don't worry, my lord, this national laboratory is in my own charge, and it can be established within a year."

Gao Huan said on the side.

"The development of science is not overnight, everyone must be patient, we are just laying the foundation for the future, as long as the foundation is laid, the rest will be left to future generations to do."

Liu Yuetian was not in a hurry, but the people around him didn't care too much about what he said.

Posterity to do it? Speak as if you're old.

You must know that these people present, the oldest is Meng Sheng of the Mo family, who is not less than fifty years old this year, and then Shi Le, who is only in his forties, what Fu Jian, Gao Huan, Zu Chongzhi and other people are only in their thirties, as for Liu Yuetian, he has just passed twenty, these people are all young people, and each of them follows Liu Yuetian to practice martial arts, and their health is very good, at least some have thirty or forty years to live, how can they be worthy of themselves if they don't make some achievements for so long?

"By the way, Brother Fang, Brother Wang, it seems that the business aspect has stagnated a little now, what's wrong?"

Liu Yuetian looked at Fang Xuanling and Wang Meng and asked.

"Lord, it is indeed as you said, but it is not that everyone is unwilling to engage in business, on the contrary, now commerce is very prosperous, all kinds of commodities emerge in endlessly, and even some of us did not think that gold and silver are hard currency that ordinary people can not afford, many people use copper money, business has increased significantly in the past two years, copper money has also been minted in large quantities, and now it has become worthless, a year ago a load of grain can be sold for a thousand copper dollars, but now, can only buy more than 700, copper money has depreciated significantly, and many merchants no longer pay with copper money, changed back to gold and silver, so that many people are not willing to use copper coins, but there is so much gold and silver, there is not enough at all, which has caused a lot of problems. ”

Fang Xuanling replied.

"Inflation!"

Liu Yuetian nodded and understood the reason.

"Inflation? What is this? ”

Fang Xuanling and Wang Meng heard a new term and immediately asked.

Liu Yuetian told everyone the meaning of this word that does not belong to this world.

"I see!"

Others didn't understand it, but Fang Xuanling, Wang Meng, Sun Chi and Zhang Juzheng and other management ministers understood it as soon as they heard it.

"So how do we deal with it?"

Wang Meng asked.

"Copies?"

Liu Yuetian knows that this kind of inflation is actually only an economic phenomenon that can be produced under the credit system, and the reason why this era will appear is completely caused by himself, that is to say, his system is too rebellious, and the government bears the vast majority of debts, so that the people can carry out business activities without scruples, which is good in a short period of time, but after a long time, with more and more population, it is inevitable to re-establish an economic system that does not require his system to participate, which is a long-term strategy.

"Now that our papermaking and printing technology is very good, we can immediately start replacing copper money with paper money, and then we will establish a credit system, open money banks, and realize a loan system, so that we can mobilize the economy."

There is not much difficulty in printing papermaking technology, now Da Zhou has generally used paper books, a large number of books are printed, every year Tianshui alone can sell tens of thousands of sets of books, the cost of each book is very cheap, more than a dozen copper coins can buy several copies, it is also by virtue of these books, education can be completely popularized, if not like before, a book needs to be pulled by a car, who will buy?

"Paper money instead of copper coins? How can that work? ”

Everyone shook their heads again and again, the currency itself is still valuable, but the paper is not good, now paper is widely used, a square piece of paper is only worth a few copper coins, not much worse than the soil and gravel, how can this kind of thing be widely used as currency? Do you have to use a cart to pull a large amount of paper to buy a pound of grain?

"Hehe, you don't understand, paper money is just a tool, in fact, what we want to do is a set of credit system, we must first become a money bank in the name of the country, this money bank represents the country's economy, there is this money bank to issue banknotes, the amount can be indicated on it, such as the issuance of a paper money with a denomination of one hundred, which means that it represents one hundred taels of silver, as long as you trust our country, he is money, as long as the country is strong, this kind of money is worth one hundred taels of silver, this is credit, the country's credit."

"Credit?"