After Bai Xiu retreated, Zhu Jianji immediately found rice paper, and asked Dai Yi to find out the map of the Ming Dynasty - unfortunately, Matteo Ricci has not come to China, there is no "Atlas of the World", and there is no "Kunyu Wanguo Quantu", and the current map of the Wanbang Kanyu used by the Ming Dynasty is still missing too much.

However, Zhu Jianji's geographical knowledge is also okay.

After searching for brains, using the Wanbang Kanyu map as the prototype to continuously supplement, and finally reluctantly drew the framework of a world map, and marked the destination in the possible directions of the American continent and Australia.

By the end of all this, it was already dark.

Zhu Jianji stretched his waist and asked Dai Yi to put away the simple version of the world map he had drawn, and hand it to Bai Xiu when he came to meet him after the beginning of spring, so that he could go on a global voyage.

The crown princess Bai Carp is not there tonight......

The evil villain in Zhu Jianji's heart suddenly rippled.

Lao Tzu wants to be debauched.

Lao Tzu wants to open a silver party!

Well, Liu Han and Li Qin are a little conservative, and they forget it, but Mayinur and the other three fearful girls were trained well by the crossbow Wen and were very open.

As soon as Zhu Jianji gave Dai Yi such an order, Dai Yi was stunned.

I want to advise, but I am afraid that His Highness will be angry.

In the end, it was silently arranged.

It was night, and Zhu Jianji was having a happy life.

Life is nothing more than that.

On the second day, Zhu Jianji woke up from a pile of powder-legged lotus arms, wantonly touched his hands and enjoyed it, and did not dare to go on the horse to fight, if last night's events were reported to Kunning Palace or Shoukang Palace, he would definitely be reprimanded by the queen mother and the imperial grandmother.

Moreover, only the exhausted oxen did not plough the rotten fields.

Mayinur and the others choked themselves last night.

It's a long time coming.

As the prince of the Ming Dynasty and the future co-owner of the world, Zhu Jianji doesn't want to be like Lao Zhu, who can't afford to be on the bed because of indulgence.

Woke up late.

I didn't go to the pilgrimage.

After reading the book in the Wenhua Hall for a while, I always felt empty in my heart, so I simply took out the abbreviated world map I drew last night, and checked and filled in the gaps again.

Seeing that it was almost noon, a report suddenly came from outside the palace: "Your Highness, Lu Chunjing, Zhao Chuanjia, and Zhu Bi ask to see you."

Zhu Jianji was overjoyed.

Before the expedition to Taiwan this year, he funded the establishment of the Daming Royal Power Company, which was led by Lu Yuan's eldest son, Lu Chunjing, and asked Zhu Bi and Zhao Chuanjia to go to the Leizhou Peninsula with iron to make magnets.

Did it work?

Hurriedly said, "Xuan!"

A moment later, the three of them entered the temple and bowed.

Zhu Jianji lay down on the back of the chair, looked at Lu Chunjing with a smile, and said, "Lu Chunjing, after returning from the lonely expedition to Taiwan, he has been busy with political affairs and has no time to inspect the Daming Royal Power Company, how is the progress?"

Lu Chunjing said: "Back to His Highness, the company's headquarters has already been built, according to His Highness's plan, a large number of craftsmen who understand water conservancy have been recruited, and the river near Gyeonggi has been surveyed to find a location for the construction of the dam, and the dam can be built only when His Highness's funds are in place."

Zhu Jianji nodded, "I don't have any money for the time being, so the matter of building the dam will be slowed down."

Lu Chunjing: "......"

Then what do you urge me to do?

Zhu Jianji looked at Zhu Bi and Zhao Chuanjia: "What are the results of going to the Leizhou Peninsula?" ….

Zhao Chuanjia took a step forward, "According to His Royal Highness's orders, the steelmaking mill that originally belonged to the East Palace Military Research Institute prepared fifteen huge pieces of iron for the Weichens, and the Weichens transported them to the Leizhou Peninsula to find an excellent lightning splitting position on the top of the Leiyun Peak, and successfully let the fifteen large iron pieces baptize in thunder and lightning, but - there is magnetism, but it can't be kept for a long time, and the magnetism is very messy!"

Zhu Jianji was stunned, "How can this be?"

Zhao Chuanjia sighed: "The ministers don't know."

Zhu Jianji was stunned, no, according to his common sense, it is indeed possible to produce magnets after steel and the like are struck by lightning, fifteen pieces of iron, according to the lowest probability, one or two permanent magnets should also be generated.

where

Asked the question?

Zhu Jianji couldn't sit still, this is a big deal.

He asked, "Are you sure you're following the steps of Gu Shuo?"

Zhao Chuanjia and Zhu Bi nodded, "The ministers don't dare to bully the king."

Zhu Jianji suddenly felt a pain in his head, without magnets, how to generate electricity, how to generate electricity, how to make money, the most important point, once the Ming Dynasty creates a city that never sleeps, it is possible to take the lead in becoming the center of the world in terms of the prosperity of the city.

It's a matter of national image!

What went wrong?

Zhu Jianji fell into deep thought.

Brain-racking memories about lightning striking steel to make permanent strong magnets was seen from an anime, and after so many years, he only remembered to use copper wire and insulating paint.

There must be something wrong with one of the steps!

In fact, natural magnets can also be used.

But Daming has not mined natural magnets at all.

Then you have to do it with both hands.

Thinking of this, Zhu Jianji shouted to Dai Yi at the door, "Xuan Hangmin."

He also said to Lu Chunjing, Zhao Chuanjia and Zhu Bi: "You go back to the mansion first, rest for a while, and then go to the Leizhou Peninsula after the beginning of spring, be sure to make a magnet."

The three of them stepped back.

Taking advantage of the fact that Hang Min had not yet arrived, Zhu Jianji continued to think, hoping to remember which step went wrong.

When Hang Min arrived, Zhu Jianji already had a faint thought.

It should be because the electric field is not isolated, and the magnetic pole is not determined.

Just find the problem!

Try a few more times and there will always be a successful day.

Zhu Jianji excused Hang Min, and then said, "Over there is a magnetite ore mining over there in the Ministry of Industry?"

Hang Min shook his head, "No."

Zhu Jianji felt a little helpless, "In the territory of Daming, where is there a magnet mine?"

Hang Min, as the secretary of the Ministry of Industry, is familiar with minerals all over the country, and immediately said: "Daye County, under the jurisdiction of Xingguo Prefecture in the territory of Huguang, has a large number of magnet mines."

Zhu Jianji thought for a moment, "Can the Ministry of Industry mine and process magnet ore?"

Hang Min thought for a long time, "You can try."

Zhu Jianji immediately said: "The Ministry of Industry immediately arranged for people to go to Daye County to investigate, and strive to establish a complete system of magnet mining and processing within half a year."

Hang Min advised, "Your Majesty, magnet mines are of very little use, and there is no need to spend manpower and financial resources to mine them."

Zhu Jianji thought it made sense, and he couldn't use it so much.

Then he changed his words and said: "In this way, the Ministry of Industry will prepare first, and Zhao Chuanjia will go to Leizhou again after the beginning of spring, if the division is unfavorable, the mining of magnet ore is imperative, if the problem is solved, there is no need to mine." ….

Hang Min commanded.

Zhu Jianji said again: "Let the steel mill prepare some copper wires."

Daming can produce copper wire.

In fact, the production of copper wire and iron wire in China is very early, and the copper wire used to link the stone chips on the terracotta warriors and horses of Qin Shi Huang is recorded in "Tiangong Kaiwu", so the Ming Dynasty in this period must be able to produce copper wire.

Sure enough, Hang Min didn't say a word, "How much copper wire does Your Highness want?"

Zhu Jianji thought for a while, "Copper wire the size of a little thumb, prepare a three-hundred-zhang copper wire." Prepare a copper wire the size of a toothpick about 1,000 zhang...... Well, after a while, the demand is high, and it may be necessary to set up a special copper wire production workshop."

Hang Min gasped, "Your Highness, it's very expensive."

Copper is not cheap.

That's all money!

And the Ming Dynasty has always been short of copper, His Royal Highness uses copper to build copper wires, isn't this a tyrannical thing.

Zhu Jianji hummed, "Gu knows that it is very expensive, you don't have to worry about money, you calculate how much it costs, and I will ask Lu Chunjing to transfer it from the account of the Royal Power Company to the steel mill later."

In the fifteenth century, not only the Ming Dynasty, but also the whole world did not have aluminum products, Zhu Jianji could only use copper wire as the wire core, expensive is expensive, but the income is high, and the wires of the 21st century are also

with copper cores.

As for the lack of copper in Daming......

After a few years of successful expansion, what will I lack in Daming!

Hang Min had no choice but to get the order.

When the autumn wind is sad to draw a fan